Inductor assembly and integrated power converter module

Abstract

The invention discloses an inductor assembly and an integrated power converter module, on one hand, the inductor assembly is arranged on a bottom substrate, after integral plastic packaging, a signal electric connecting piece is formed on a plastic packaging material through electroplating, and the signal electric connecting piece extends to the side face of the plastic packaging material from the top of the inductor assembly and then extends to the bottom face of the bottom substrate. Secondly, an auxiliary winding is added to be coupled with the main winding to form a TLVR inductor, and the TLVR inductor is used for improving the dynamic performance of the VRM module; and thirdly, the Vin electric connecting piece is arranged between the main winding and the signal electric connecting piece, and the middle part of the Vin electric connecting piece is widened, so that a jump signal of the main winding is effectively prevented from interfering a transmission signal on the signal electric connecting piece. And fourthly, in the vertical power supply mode, the second pin of the main winding protrudes out of the bottom surface of the magnetic core, so that an accommodating space is formed between the magnetic core and the bottom substrate and is used for accommodating the output capacitor, the output capacitor is arranged adjacent to the load, and the dynamic requirement of the load is met.

Description

Technical Field

[0001] The present invention relates to the field of power converters, and in particular to an inductor component and an integrated power converter module. Background Art

[0002] In recent years, with the development of technologies in the fields of data centers, artificial intelligence, and supercomputers, more and more powerful ASICs have been applied, such as CPUs, GPUs, machine learning accelerators, network switches, and servers, which consume a lot of current, for example, the required current can reach thousands of amperes; and its current has the characteristics of rapid jump. Traditionally, a voltage regulator module (VRM, Voltage Regulator Modules, i.e., the power converter module involved in the present invention) composed of a buck circuit (Buck) is used to supply such loads. And the voltage of these loads is getting lower and lower, now as low as 0.65V, and the current of the load continues to increase. In the low-voltage and high-current VRM module, how to improve efficiency, how to improve transient response capability, and how to improve power density have become a key to meeting the power supply requirements of ASICs; it is also a core issue in the design of VRM modules.

[0003] As the load current continues to increase, the heat dissipation of the VRM module is also a key issue that needs to be considered. At present, in order to share the heat sink with the load ASIC and reduce the thermal resistance of the top surface of the VRM module, the switch device as the heat source is set adjacent to the top surface of the VRM module, and the filter inductor is set adjacent to the bottom surface of the VRM module; therefore, the input power current and control signal need to be transmitted from the motherboard adjacent to the bottom surface of the VRM module to the switch device on the top surface, and the current sampling and temperature sampling signals related to the working status of the top switch device need to be transmitted from the top surface to the motherboard adjacent to the bottom surface; therefore, the output filter inductor in the VRM module needs to integrate the power connector and the signal connector;

[0004] In the traditional power supply mode, the VRM module and the load are arranged horizontally adjacent to each other on the same surface of the motherboard, that is, the horizontal power supply mode. In this power supply mode, the distance between the VRM module and the load is far, and the impedance of the power distribution network (Power Delivery Network, hereinafter referred to as PDN) is large; when the load current becomes larger and larger, for example, as large as thousands of amperes, the loss on the PDN seriously affects the efficiency of the VRM module to transmit energy to the load. In order to further improve the efficiency, it is necessary to reduce the impedance of the PDN, therefore, the present invention adopts a vertical power supply mode. The vertical power supply mode is that the VRM module and the load are stacked vertically on the front and back sides of the motherboard, which can greatly reduce the energy transmission path of the PDN and greatly improve the energy transmission efficiency; but the problem with the vertical power supply mode is that the space originally used to place the output capacitor is occupied by the VRM module, so there is no space to place the output capacitor, which seriously affects the dynamic performance of the VRM module.

[0005] Therefore, how to integrate the output capacitor into the VRM module to improve the dynamic performance of the module; at the same time, how to reduce the number of exposed solder joints to improve the reliability of the VRM module in reflow soldering applications is an urgent problem to be solved. Summary of the invention

[0006] The present invention improves the dynamic performance of the module by adopting the inductor of TLVR (Trans-inductor Voltage Regulator) inductor technology, or coupled inductor, or TLVR inductor technology based on coupled inductor; at the same time, the output capacitor is integrated inside the VRM module, and the welding point of the output capacitor is plastic-sealed to reduce the number of exposed welding points on the entire module, thereby improving the reliability of the module in the case of reflow soldering application.

[0007] A first aspect of the present invention provides an inductor assembly, comprising a magnetic core, a first main winding, a second main winding, a first auxiliary winding and a second auxiliary winding;

[0008] The magnetic core comprises an opposite top surface and a bottom surface, an opposite first side surface and a third side surface, and an opposite second side surface and a fourth side surface;

[0009] The first pin of the first main winding and the first pin of the second main winding are arranged on the top surface of the magnetic core; the second pin of the first main winding, the second pin of the second main winding, at least one pin of the first auxiliary winding and at least one pin of the second auxiliary winding are arranged on the bottom surface of the magnetic core; the first main winding and the second main winding pass through the magnetic core respectively; the first auxiliary winding is coupled to the first main winding, and the second auxiliary winding is coupled to the second main winding; any auxiliary winding is electrically isolated from the adjacent main winding.

[0010] Preferably, the first main winding, the first auxiliary winding, the second auxiliary winding and the second main winding are arranged in sequence; the first auxiliary winding is arranged adjacent to the first main winding, and the second auxiliary winding is arranged adjacent to the second main winding; the first main winding and the second main winding respectively include a main body, a first end and a second end, and the first auxiliary winding and the second auxiliary winding respectively include a main body, a first end and a second end; the main body of the first auxiliary winding and the main body of the first main winding extend from their respective first ends to the second ends along the same direction, and the main body of the second auxiliary winding and the main body of the second main winding extend from their respective first ends to the second ends along the same direction.

[0011] Preferably, the upper end of the first auxiliary winding and the upper end of the second auxiliary winding are exposed on the top surface of the magnetic core, and the lower end of the first auxiliary winding and the lower end of the second auxiliary winding are exposed on the bottom surface of the magnetic core; the first ends of the first main winding, the second main winding, the first auxiliary winding and the second auxiliary winding are all arranged adjacent to the first side surface, and the second ends of the first main winding, the second main winding, the first auxiliary winding and the second auxiliary winding are all arranged adjacent to the third side surface.

[0012] Preferably, the upper end and the lower end of the first auxiliary winding and the upper end and the lower end of the second auxiliary winding are exposed on the bottom surface of the magnetic core; the first ends of the first main winding, the second main winding, the first auxiliary winding and the second auxiliary winding are arranged adjacent to the first side surface, and the second ends of the first main winding, the second main winding, the first auxiliary winding and the second auxiliary winding are arranged adjacent to the third side surface.

[0013] Preferably, the first auxiliary winding, the first main winding, the second main winding and the second auxiliary winding are arranged in sequence; the first auxiliary winding is arranged adjacent to the first main winding, and the second auxiliary winding is arranged adjacent to the second main winding; the first main winding and the second main winding both include a main body, a first end and a second end, and the first auxiliary winding and the second auxiliary winding both include a main body, a first end and a second end; the main body of the first auxiliary winding and the main body of the first main winding extend from their respective first ends to the second ends along the same direction, and the main body of the second auxiliary winding and the main body of the second main winding extend from their respective first ends to the second ends along the same direction; the first end of the first auxiliary winding, the first end of the first main winding, the second end of the second main winding and the second end of the second auxiliary winding are all arranged adjacent to the first side, and the second end of the first auxiliary winding, the second end of the first main winding, the first end of the second main winding and the first end of the second auxiliary winding are all arranged adjacent to the third side.

[0014] Preferably, the first main winding and the second main winding both include a main body, a first end and a second end, and the first auxiliary winding and the second auxiliary winding both include a main body, a first end and a second end; the main bodies of the first main winding and the second main winding are both C-shaped, and the main bodies of the first auxiliary winding and the second auxiliary winding extend from their respective first ends to their second ends in the same direction; the first end and the second end of the first main winding, the first end of the first auxiliary winding and the first end of the second auxiliary winding are all arranged adjacent to the first side surface, and the first end and the second end of the second main winding, the second end of the first auxiliary winding and the second end of the second auxiliary winding are all arranged adjacent to the third side surface; the first auxiliary winding is arranged adjacent to the second side surface, and is arranged adjacent to a part of the main body of the first main winding and a part of the main body of the second main winding, and the second auxiliary winding is arranged adjacent to the fourth side surface, and is arranged adjacent to another part of the main body of the first main winding and another part of the main body of the second main winding; the first auxiliary winding is coupled to the first main winding, the first auxiliary winding is coupled to the second main winding, the second auxiliary winding is coupled to the first main winding, and the second auxiliary winding is coupled to the second main winding.

[0015] Preferably, the inductor component is formed by pressing a magnetic core material, a first main winding, a second main winding, a first auxiliary winding, and a second auxiliary winding.

[0016] Preferably, the magnetic core is assembled.

[0017] Preferably, the inductor component also includes at least one Vin electrical connector and two GND electrical connectors; at least one of the Vin electrical connectors is arranged adjacent to the first side surface and / or the third side surface, and the two GND electrical connectors are respectively arranged on the second side surface and the fourth side surface; the upper ends of the Vin electrical connector and the GND electrical connector are exposed on the top surface of the magnetic core, and the lower ends of the Vin electrical connector and the GND electrical connector are exposed on the bottom surface of the magnetic core.

[0018] Preferably, at least one of the Vin electrical connectors is arranged adjacent to the third side surface, and the Vin electrical connector includes a first pin, a second pin and a middle part, the first pin is arranged on the top surface of the magnetic core, the second pin is arranged on the bottom surface of the magnetic core, and the width of the middle part is greater than the width of the first pin and the second pin.

[0019] Preferably, the inductor assembly further includes a signal electrical connector, at least a portion of which is arranged outside a middle portion of the Vin electrical connector; the middle portion is used to shield electromagnetic interference of the first main winding and the second main winding on at least a portion of the signal electrical connector.

[0020] Preferably, the inductor assembly further includes a signal electrical connector, and at least a portion of the signal electrical connector is disposed adjacent to the third side surface.

[0021] Preferably, the signal electrical connector is a pin header.

[0022] Preferably, the Vin electrical connector, the GND electrical connector or the signal electrical connector is formed by a metallization process.

[0023] Preferably, the Vin electrical connector or the GND electrical connector is a metal column.

[0024] Preferably, the second pin of the first main winding and the second pin of the second main winding protrude from the bottom surface of the magnetic core;

[0025] The first pin and the second pin of the Vin electrical connector are respectively connected to the middle portion via a step structure, and the step structure is used to avoid the signal electrical connector.

[0026] Preferably, the magnetic core is provided with an air gap; at least a portion of the air gap is located between the first main winding and the second main winding.

[0027] Preferably, the magnetic core is assembled, and the air gap divides the magnetic core into two halves along the vertical direction; the magnetic core is also provided with a groove, and the groove is used to accommodate the first main winding and the second main winding, and the groove is connected to the air gap.

[0028] Preferably, the air gap includes a first air gap, which is a horizontal flat through-hole shape, and the first air gap extends from one side of the magnetic core to the other opposite side, and the first air gap extends from the main winding body of the first main winding to the main winding body of the second main winding.

[0029] Preferably, the second ends of the first auxiliary winding and the second auxiliary winding are bent along the bottom surface toward the middle area of ​​the bottom surface of the magnetic core, and form a second pin in the middle area of ​​the bottom surface.

[0030] A second aspect of the present invention provides an inductor assembly, comprising a magnetic core, a first main winding, a second main winding, a Vin electrical connector, and a GND electrical connector;

[0031] The magnetic core comprises an opposite top surface and a bottom surface, an opposite first side surface and a third side surface, and an opposite second side surface and a fourth side surface;

[0032] The first pin of the first main winding and the first pin of the second main winding are arranged on the top surface of the magnetic core; the second pin of the first main winding and the second pin of the second main winding are arranged on the bottom surface of the magnetic core; the first main winding and the second main winding pass through the magnetic core respectively;

[0033] The Vin electrical connector is arranged adjacent to the third side surface, and the two GND electrical connectors are respectively arranged on the second side surface and the fourth side surface; the upper ends of the Vin electrical connector and the GND electrical connector are exposed on the top surface of the magnetic core, and the lower ends of the Vin electrical connector and the GND electrical connector are exposed on the bottom surface of the magnetic core; the Vin electrical connector includes a first pin, a second pin and a middle part, the first pin is arranged on the top surface of the magnetic core, the second pin is arranged on the bottom surface of the magnetic core, and the width of the middle part is greater than the width of the first pin and the second pin.

[0034] Preferably, it also includes a plastic package and a signal electrical connector, the plastic package covers the magnetic core, Vin electrical connector and GND electrical connector, at least a portion of the signal electrical connector is arranged on the outside of the middle part of the Vin electrical connector; the middle part is used to shield the electromagnetic interference of the first main winding and the second main winding to at least a portion of the signal electrical connector.

[0035] Preferably, the first main winding and the second main winding are I-shaped.

[0036] Preferably, the first main winding and the second main winding respectively include a first end, a main body and a second end, and the main bodies of the first main winding and the second main winding extend from their respective first ends to the second ends in opposite directions; the first end of the first main winding and the second end of the second main winding are arranged adjacent to the first side, and the second end of the first main winding and the first end of the first main winding are arranged adjacent to the third side.

[0037] Preferably, the Vin electrical connector and the GND electrical connector are formed by a metallization process.

[0038] Preferably, the Vin electrical connector and the GND electrical connector are metal pillars.

[0039] Preferably, the magnetic core is provided with an air gap; at least a portion of the air gap is located between the first main winding and the second main winding.

[0040] Preferably, the air gap divides the magnetic core into two halves along the vertical direction, and the magnetic core is further provided with a groove, wherein the groove is used to accommodate the first main winding and the second main winding, and the groove is connected to the air gap.

[0041] The third aspect of the present invention provides an integrated power converter module, which includes the above-mentioned inductor component, and also includes a top component and a bottom substrate, the top component is arranged on the top surface of the inductor component, and the bottom substrate is arranged on the bottom surface of the inductor component; the first pin of the first main winding, the first pin of the second main winding, the upper end of the Vin electrical connector and the upper end of the GND electrical connector are electrically connected to the top component, and the second pin of the first main winding, the second pin of the second main winding, the lower end of the Vin electrical connector and the lower end of the GND electrical connector are electrically connected to the bottom substrate.

[0042] Preferably, the signal electrical connector extends from the top of the inductor component through the side of the plastic packaging material to the bottom surface of the bottom substrate.

[0043] Preferably, the upper end of the signal electrical connector is disposed on the top surface of the inductor component and is electrically connected to the top component; the lower end of the signal electrical connector is disposed on the bottom surface of the inductor component and is electrically connected to the bottom substrate.

[0044] Preferably, it further comprises an output capacitor, which is arranged between the magnetic core and the bottom substrate; one end of the output capacitor, the lower end of the first main winding and the lower end of the second main winding are electrically connected.

[0045] Preferably, the first pin and the second pin of the Vin electrical connector are respectively connected to the middle portion of the Vin electrical connector via a step structure, and the step structure is used to avoid the signal electrical connector.

[0046] Preferably, the top component includes a top substrate, an input capacitor and two IPM units; the input capacitor and the two IPM units are arranged on the top surface of the top substrate; the IPM unit is electrically connected to the first pin of the Vin electrical connector; the IPM unit is electrically connected to the upper end of the GND electrical connector; the upper end of the first main winding is electrically connected to one of the two IPM units, and the upper end of the second main winding is electrically connected to the other of the two IPM units.

[0047] A fourth aspect of the present invention provides an integrated power converter module, comprising an inductor component, a bottom substrate, a plastic encapsulation material and a signal electrical connector;

[0048] The inductor component is arranged on the top surface of the bottom substrate; the plastic packaging material covers the inductor component and a part of the top surface of the bottom substrate;

[0049] The inductor assembly includes a magnetic core, a first main winding, a second main winding, a Vin electrical connector and a GND electrical connector;

[0050] The upper end of the first main winding, the upper end of the second main winding, the upper end of the Vin electrical connector, and the upper end of the GND electrical connector are respectively exposed from the top surface of the inductor component to the plastic packaging material, and the lower end of the first main winding, the lower end of the second main winding, the lower end of the Vin electrical connector, and the lower end of the GND electrical connector are respectively electrically connected to the bottom substrate; the first main winding and the second main winding pass through the magnetic core respectively;

[0051] The signal electrical connector extends from the top of the inductor component through the side of the plastic packaging material to the bottom surface of the bottom substrate; the signal electrical connector is formed by a metallization process.

[0052] Preferably, the side surface of the plastic encapsulation material is formed by cutting the board, and the signal electrical connector is a plated half-hole component.

[0053] Preferably, the integrated power converter module also includes a top component, which is arranged adjacent to the top surface of the magnetic core; the top component includes a top substrate, two IPM units and an input capacitor; the two IPM units and the input capacitor are arranged on the top surface of the top substrate; the IPM unit is electrically connected to the upper end of the Vin electrical connector; the IPM unit is electrically connected to the upper end of the GND electrical connector; the upper end of the first main winding is electrically connected to one of the two IPM units, and the upper end of the second main winding is electrically connected to the other of the two IPM units.

[0054] Preferably, the integrated power converter module further comprises an output capacitor, which is arranged between the magnetic core and the bottom substrate; one end of the output capacitor, the lower end of the first main winding and the lower end of the second main winding are electrically connected.

[0055] Preferably, the integrated power converter module also includes a metal frame, which is used to electrically connect the inductor component to the bottom substrate; the metal frame is arranged between the magnetic core and the bottom substrate; the metal frame is arranged around the output capacitor, and the metal frame is provided with a gap or groove allowing the plastic packaging material to flow in.

[0056] Preferably, the magnetic core has a first side and a third side opposite to each other, and the magnetic core also has a second side and a fourth side opposite to each other; the Vin electrical connector is arranged on the first side and / or the third side, and the GND electrical connector is arranged on the second side and / or the fourth side.

[0057] Preferably, the inductor component further includes a first auxiliary winding and a second auxiliary winding; the first auxiliary winding is positively coupled to the first main winding, and the second auxiliary winding is positively coupled to the second main winding; the first auxiliary winding and the second auxiliary winding are used to form a closed loop of the TLVR inductor technology.

[0058] Preferably, the first main winding and the second main winding respectively include a main winding body, a main winding first end and a main winding second end; the main winding first end extends from one end of the main winding body to the top surface of the magnetic core, and the main winding second end extends from the other end of the main winding body to the bottom substrate of the magnetic core; the main winding body is horizontally arranged.

[0059] Preferably, the inductor component also includes a first auxiliary winding and a second auxiliary winding; the first auxiliary winding and the second auxiliary winding respectively include an auxiliary winding body, a first end of the auxiliary winding and a second end of the auxiliary winding; the first end of the main winding extends from one end of the main winding body to the bottom substrate, and the second end of the main winding extends from the other end of the main winding body to the bottom substrate of the magnetic core; the auxiliary winding and the first main winding are positively coupled, and the auxiliary winding and the second main winding are positively coupled; the first auxiliary winding and the second auxiliary winding are used to form a closed loop of the TLVR inductor technology.

[0060] Preferably, a low magnetic permeability material is provided between the auxiliary winding body and the main winding body.

[0061] Preferably, the main winding body includes a first main winding body, a second main winding body and a third main winding body connected in sequence; the first main winding body, the second main winding body and the third main winding body are arranged in a C-shaped horizontal winding; the first main winding and the second main winding are arranged in a second-order rotational symmetric manner; the second main winding body of the first main winding and the second main winding body of the second main winding are reversely coupled; the first main winding body of the first main winding and the first auxiliary winding are positively coupled; the third main winding of the second main winding and the first auxiliary winding are positively coupled; the first main winding and the second main winding are both coupled to the first auxiliary winding, and the first main winding and the second main winding are both coupled to the second auxiliary winding.

[0062] Preferably, the distance between the signal electrical connection and the nearest second end of the main winding is smaller than the distance between the signal electrical connection and any first end of the main winding.

[0063] Preferably, the inductor component has a second-order rotationally symmetrical structure, and the signal electrical connector is arranged on the inductor component in a second-order rotationally symmetrical manner.

[0064] A fifth aspect of the present invention provides an integrated power converter module, comprising an inductor component, a bottom substrate, a plastic packaging material and a signal electrical connector; the signal electrical connector is arranged on a side of the inductor component;

[0065] The inductor assembly includes a magnetic core, a first main winding, a second main winding, a Vin electrical connector and a GND electrical connector;

[0066] The upper end of the first main winding, the upper end of the second main winding, the upper end of the Vin electrical connector, and the upper end of the GND electrical connector are respectively exposed from the top surface of the inductor component to the plastic packaging material, and the lower end of the first main winding, the lower end of the second main winding, the lower end of the Vin electrical connector, and the lower end of the GND electrical connector are respectively electrically connected to the bottom substrate; the first main winding and the second main winding pass through the magnetic core respectively;

[0067] The first main winding and the second main winding respectively include a main winding body, a first end of the main winding and a second end of the main winding; the first end of the main winding extends from one end of the main winding body to the top surface of the magnetic core, and the second end of the main winding extends from the other end of the main winding body to the bottom substrate of the magnetic core; the main winding body is horizontally arranged;

[0068] The first main winding and the second main winding are arranged in a second-order rotationally symmetrical manner, and the first main winding and the second main winding are anti-coupled.

[0069] Preferably, a low magnetic permeability material is provided between the main winding body of the first main winding and the main winding body of the second main winding.

[0070] Preferably, the magnetic core is provided with an air gap; at least a portion of the air gap is located between the first main winding and the second main winding.

[0071] Preferably, the air gap divides the magnetic core into two halves along the vertical direction.

[0072] Preferably, the magnetic core is further provided with a groove, the groove is used to accommodate the first main winding and the second main winding, and the groove is connected to the air gap.

[0073] Preferably, the air gap includes a first air gap, which is a horizontal flat through-hole shape, and the first air gap extends from one side of the magnetic core to the other opposite side, and the first air gap extends from the main winding body of the first main winding to the main winding body of the second main winding.

[0074] Preferably, the air gap also includes a second air gap, the second air gap is connected to the first air gap, the second air gap is in the shape of a vertical slot, and the second air gap passes from the top surface of the magnetic core to the bottom surface of the magnetic core; the second air gap extends from the first main winding or the second main winding to a side surface of the magnetic core.

[0075] Preferably, the inductor component also includes a first auxiliary winding and a second auxiliary winding; the first auxiliary winding and the second auxiliary winding respectively include an auxiliary winding body, a first end of the auxiliary winding and a second end of the auxiliary winding; the first end of the main winding extends from one end of the main winding body to the bottom substrate, and the second end of the main winding extends from the other end of the main winding body to the bottom substrate of the magnetic core; the auxiliary winding is coupled to the first main winding, and / or the auxiliary winding is coupled to the second main winding; the first auxiliary winding and the second auxiliary winding are used to form a closed loop of a TLVR inductor technology.

[0076] Preferably, a low magnetic permeability material is provided between the auxiliary winding body and the main winding body.

[0077] Preferably, the integrated power converter module also includes a top component, which is arranged adjacent to the top surface of the magnetic core; the top component includes a top substrate, two IPM units and an input capacitor; the two IPM units and the input capacitor are arranged on the top surface of the top substrate; the IPM unit is electrically connected to the first pin of the Vin electrical connector; the IPM unit is electrically connected to the upper end of the GND electrical connector; the upper end of the first main winding is electrically connected to one of the two IPM units, and the upper end of the second main winding is electrically connected to the other of the two IPM units; the two IPM units are arranged in a second-order rotationally symmetrical manner.

[0078] Preferably, the magnetic core has a first side and a third side opposite to each other, and the magnetic core also has a second side and a fourth side opposite to each other; the Vin electrical connector is arranged on the first side and / or the third side, and the GND electrical connector is arranged on the second side and / or the fourth side.

[0079] The present invention arranges the inductor component on the bottom substrate, and after the whole is plastic-sealed, electroplating forms a signal electrical connector on the plastic packaging material, and the signal electrical connector extends from the top of the inductor component to the side of the plastic packaging material, and then extends to the bottom surface of the bottom substrate; the present invention forms a TLVR inductor by adding an auxiliary winding to couple with the main winding to improve the dynamic performance of the VRM module; the present invention arranges the Vin electrical connector between the main winding and the signal electrical connector, and widens the middle part of the Vin electrical connector, so as to effectively avoid the jump signal of the main winding from interfering with the transmission signal on the signal electrical connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0081] Figure 1a It is a schematic diagram of the circuit principle of a two-phase VRM module;

[0082] Figure 1b This is the circuit principle diagram of TLVR inductor technology;

[0083] Figure 2a is a schematic diagram of the overall structure of the integrated power converter module;

[0084] Figure 2b is an exploded view of an integrated power converter module;

[0085] Figure 2c to Figure 2f Exploded diagram of the structure of each component;

[0086] Figure 2g To realize the process flow of signal electrical connectors;

[0087] Figure 3a is a schematic diagram of the overall structure of the integrated power converter module;

[0088] Figure 3b is an exploded view of an integrated power converter module;

[0089] Figure 3c to Figure 3h Exploded diagram of the structure of each component;

[0090] Figure 4a to Figure 4b It is a structural schematic diagram and exploded diagram of the inductor component;

[0091] Figure 5a It is a structural schematic diagram of a two-phase VRM step-down circuit;

[0092] Figure 5b to Figure 5g This is an exploded diagram of the inductor component and its internal structure;

[0093] Figure 5h to Figure 5I is a structural schematic diagram and exploded diagram of another integrated inductor;

[0094] Figures 6a to 6c is a structural schematic diagram and exploded diagram of another inductor component;

[0095] Figures 7a to 7c is a structural schematic diagram and exploded diagram of another VRM module;

[0096] Figures 8a to 8c is a structural schematic diagram and exploded diagram of another VRM module;

[0097] Figures 9a to 9d is a structural schematic diagram and exploded diagram of another integrated inductor;

[0098] Figures 10a to 10b Schematic diagram of the structure of another integrated inductor.

[0099] in:

[0100] 10VRM module; 100 top component; 110 top substrate; 121 / 122 IPM unit; 130 input capacitor Cin; 140 other passive components; 150 GND terminal; 151 first side; 152 second side; 153 third side; 154 fourth side; 155 / 156 inner section; 160 Vo terminal; 170 Vin terminal; 200 two-phase inductor; 200B bottom component; 200C integrated component; 202 / h1 / h2 height; 210TLVR inductor; 211 magnetic core; 211-1 first air gap; 211a / 212a first magnetic core; 211b / 212b second magnetic core; 211c / 212c groove; 211-2a / 211-2b second air gap; 213 air gap; 221 first main winding; 222 second main winding; 221a / 222a inductor input end (first pin of main winding); 221a1 / 222a1 / 2 31a1 / 241a1 / 242a1 first pad; 221b / 222b inductor output end (second pin of main winding); 221c / 222c main winding body; 221d / 222d main winding first end; 221e / 222e main winding second end; 221-1 / 222-1 main winding first body; 221-2 / 222-2 main winding second body; 221-3 / 222-3 main winding third body; 22 3 first auxiliary winding; 224 second auxiliary winding; 223a / 224a first pin of auxiliary winding; 223b / 224b second pin of auxiliary winding; 223c / 224c main body of auxiliary winding; 223d / 224d first end of auxiliary winding; 223e / 224e second end of auxiliary winding; 225 first auxiliary electrical connector; 226 second auxiliary electrical connector; 231 / 232 Vin electrical connector; 231a / 232a first pin of Vin electrical connector; 231b / 232b second pin of Vin electrical connector; 241 / 242 GND electrical connector; 241a / 242a first pin of GND electrical connector; 241b / 242b GND second pin of electrical connector; 250 vertical plate; 251 signal electrical connector; 270 plastic packaging material; 300 / 310 bottom substrate; 360 output capacitor Co; 1212 / 1222 bridge arm midpoint; 400 input positive end external input power supply; 410 copper column; 411 connecting rib; 500 substrate; 501 control depth groove; 600 load; Driver driver; L1 / L2 / L(N-1) / LN two-phase inductor; L10 / L20 / L(N-1)0 / LN0 auxiliary winding; Le compensation inductor; S11 / S12 / S21 / S22 / S(N-1)1 / S(N-1)2 / SN1 / SN2 switching devices. DETAILED DESCRIPTION

[0101] One of the cores of the present invention is to provide a VRM module structure. On the one hand, the inductor component is set on the bottom substrate. After the whole is plastic-sealed, a signal electrical connector is electroplated on the plastic packaging material. The signal electrical connector extends from the top of the inductor component to the side of the plastic packaging material, and then extends to the bottom surface of the bottom substrate; another core of the present invention is to add an auxiliary winding to couple with the main winding to form a TLVR inductor to improve the dynamic performance of the VRM module; another core of the present invention is to set the Vin electrical connector between the main winding and the signal electrical connector for the structure of the two-phase VRM module, and widen the middle part of the Vin electrical connector to effectively prevent the jump signal of the main winding from interfering with the transmission signal on the signal electrical connector.

[0102] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0103] Figure 1aThe circuit structure of a two-phase VRM module in the prior art is shown, and those skilled in the art can also derive the basic circuit structure of VRM modules with other phases by analogy. The two-phase VRM module 10 includes: an IPM (Intelligent Power Module) unit 121 / 122, a two-phase inductor 200 (Choke), a Vin electrical connector 231 / 232, a Vin terminal 170, a GND electrical connector 241 / 242, a GND terminal 150, and an input capacitor 130 (Cin). The two main windings L1 / L2 of the two-phase inductor 200 may or may not have magnetic coupling; the Vin electrical connectors 231 / 232 are short-circuited in parallel and connected to the positive input terminal of the VRM module 10, namely the Vin terminal 170; when in use, the positive input terminal is externally connected to the input power supply 400, namely the DC Source; the GND electrical connectors 241 / 242 are short-circuited in parallel and connected to the negative input terminal of the VRM module 10, namely the GND terminal 150; when in use, the negative input terminal is externally connected to the input power supply 400. The input capacitor 130 is connected across the positive input terminal and the negative input terminal, and the input capacitor 130 provides a path for the high-frequency switching ripple current to ensure the stability of the input voltage. The IPM unit 121 includes two switching devices S11 / S12 and a Driver. The switching device S11 is a high-end MOSFET, and the switching device S12 is a low-end MOSFET. The two MOSFETs are connected in series to form a bridge arm; one end of the bridge arm is connected to the Vin terminal 170; the other end of the bridge arm is connected to the GND terminal 150; the structure of the IPM unit 122 is the same as that of the IPM unit 121. The voltage waveform phase difference of the bridge arm midpoint 1212 / 1222 (SW, also known as the switching point) of the bridge arm of the IPM unit 121 / 122 is 180 degrees, and the bridge arm midpoint 1212 / 1222 is respectively connected to the input terminal 221a / 222a of the two-phase inductor 200; the output terminals 221b / 222b of the two-phase inductor 200 are connected in parallel to form the output positive terminal of the VRM module 10, that is, the Vo terminal 160. The Vo terminal 160 is electrically connected to the load and provides energy to the load together with the GND terminal 150; in another embodiment, the output terminals 221b / 222b may not be connected in parallel or may not be connected in parallel within the two-phase VRM module 10. The output capacitor 360 (Co) is connected in parallel at both ends of the load to filter the voltage across the load and provide the transient energy required by the load. Compared to the embodiment in which the output capacitor 360 is arranged outside the two-phase VRM module 10, the integrated power converter module of the present invention (a two-phase VRM module when the number of phases is 2) integrates the IPM unit 121 / 122, the two-phase inductor 200, the VIN electrical connector 231 / 232, the GND electrical connector 241 / 242, the input capacitor 130 and the output capacitor 360 to form an integrated component, thereby realizing a small-volume VRM module and meeting the dynamic performance requirements of the load.

[0104] The power converter module disclosed in the present invention adopts TLVR inductor technology to further improve its dynamic performance. After multiple two-phase VRM modules adopt TLVR inductor technology, each phase inductor can achieve a smaller equivalent dynamic inductance to improve the dynamic performance of multiple two-phase Buck step-down modules; at the same time, each phase inductor maintains a larger equivalent steady-state inductance to maintain the steady-state efficiency of the module. Figure 1bThe schematic diagram of the circuit of multiple two-phase VRM modules using TLVR inductor technology is shown in Figure 1. Several two-phase VRM modules are connected in parallel to realize the function of a multi-phase VRM module. The two-phase inductance in the first two-phase VRM module includes a main winding L1 and a main winding L2. Similarly, the two-phase inductance in the N / 2-th two-phase VRM module includes a main winding L(N-1) and a main winding LN. When the auxiliary windings L10...LN0 are not provided, the N-phase inductances formed by the main windings L1...LN are not coupled to each other. Auxiliary windings L10 and L20 are set in the first two-phase VRM module, and so on, auxiliary windings L(N-1)0 and LN0 are set in the N / 2th two-phase VRM module; the auxiliary windings L10...LN0 are set in a positive coupling manner with the corresponding main windings L1...LN; the terminals of the auxiliary windings L10...LN0 that are the same as the input terminals of the main windings L1...LN are marked as point terminals, and the terminals of the auxiliary windings L10...LN0 that are the same as the output terminals of the main windings L1...LN are marked as non-point terminals. All auxiliary windings are connected in series in sequence in the manner that the non-point end of the previous auxiliary winding is connected in series with the point end of the next auxiliary winding, and a compensation inductor Le is externally connected; and the PWM signals of the N-phase BUCK buck circuit of N / 2 VRMs are sequentially staggered (360 / N) degrees; at this time, the N-phase main windings L1...LN, which originally had no coupling relationship with each other, are connected end to end through the auxiliary windings L10...LN0 and the compensation inductor Le to form a closed loop to achieve coupling, and the equivalent steady-state inductance of each phase inductor main winding is reduced slightly, but the equivalent dynamic inductance is greatly reduced. In an extended embodiment, the compensation inductor Le can be replaced by a short-circuit wire, because the parasitic inductance of the loop formed by the auxiliary windings L10...LN0 and the short-circuit wire makes the equivalent steady-state inductance of each phase inductor using the TLVR inductor technology meet the requirements. Furthermore, the short-circuit wire can be short-circuited with the GND terminal 150 to reduce the voltage value of the short-circuit wire, thereby reducing the voltage value of each series connection point of the auxiliary windings L10...LN0. In another extended embodiment, the auxiliary windings L10...LN0 can be divided into two groups, each group has an equal number of auxiliary windings, and each group is respectively equipped with a compensation inductor Le with the same inductance or a short-circuit wire, so as to form two closed loops with basically the same loop inductance; and in each closed loop, the voltage waveforms at both ends of the auxiliary winding are successively out of phase by (180 / N) degrees; the advantage of this is that the voltage value of the auxiliary winding series connection point can be halved. In the extended embodiment, the number of auxiliary windings in the two closed loops can also be different, and accordingly, the two closed loops satisfy the same ratio of loop inductance as the ratio of the number of auxiliary windings, and similar benefits as mentioned above can also be obtained; Figure 1b The two-phase TLVR inductor 210 shown in the dotted box in FIG. 210 , referred to as the two-phase TLVR inductor 210 , can also replace Figure 1aThe two-phase inductor 200 in the embodiment realizes a two-phase VRM module with TLVR inductor technology, referred to as a two-phase TLVR VRM module.

[0105] Embodiment 1

[0106] Figure 2a The overall structure of the integrated power converter module according to the first embodiment of the present invention is shown, which may be a two-phase VRM module or a two-phase TLVR VRM module; Figure 2b yes Figure 2a Exploded diagram of Figure 2a and Figure 2b As shown, the two-phase VRM module 10 of this embodiment includes a top component 100 and a bottom component 200B; the top component 100 includes a top substrate 110, an IPM unit 121 / 122, an input capacitor 130, and other passive components 140; the IPM unit 121 / 122 and its SW pad are arranged at a position close to the first side of the top plate 110, that is, the first side of the two-phase VRM module 10; the signal pins of the IPM unit 121 / 122 are arranged adjacent to the third side opposite to the first side, that is, the third side of the two-phase VRM module 10; the other passive components 140 are arranged close to the signal pins of the IPM unit 121 / 122 to achieve good filtering effects; a part of the input capacitor 130 is arranged between the IPM units 121 and 122, and another part of the input capacitor 130 is arranged adjacent to the third side of the top substrate 110.

[0107] Figure 2c yes Figure 2b The structural exploded view of the middle bottom assembly 200B; Figure 2c As shown, the bottom component 200B includes an integrated component 200C and a signal electrical connector 251; the signal electrical connector 251 is respectively arranged adjacent to the second side and the fourth side of the relative bottom component 200B, that is, the second side and the fourth side of the two-phase VRM module 10; the second side and the fourth side of the two-phase VRM module 10 are located between the first side and the third side of the two-phase VRM module 10. Figure 2d yes Figure 2c The structural exploded diagram of the integrated component 200C; Figure 2c and Figure 2d As shown, the integrated component 200C includes a bottom substrate 310 (in some other embodiments, the bottom substrate 310 may be configured as a printed circuit board), an output capacitor 360 , an inductor component 210 and a molding compound 270 . Figure 2e is a structural exploded view of the inductor assembly 210; Figure 2e As shown, the inductor component 210 is Figure 1b The two-phase TLVR inductors shown are referenced Figure 1a and Figure 1bAs shown, the inductor assembly 210 includes a magnetic core 211, a first main winding 221 (L1), a first auxiliary winding 223 (L10), a second main winding 222 (L2), a second auxiliary winding 224 (L20), a VIN electrical connector 231 / 232 and a GND electrical connector 241 / 242. The VIN electrical connector 231 / 232 and the GND electrical connector 241 / 242 are used to achieve power transmission between the bottom substrate 310 and the IPM unit 121 / 122.

[0108] There is no coupling relationship between the first main winding 221 and the second main winding 222, or there is only weak positive coupling, such as a coupling coefficient less than 0.2; after adding the first auxiliary winding 223 and the second auxiliary winding 224, there is a strong positive coupling between the first main winding 221 and the first auxiliary winding 223, such as a coupling coefficient greater than 0.5; there is a strong positive coupling between the second main winding 222 and the second auxiliary winding 224, such as a coupling coefficient greater than 0.5. Figure 2f yes Figure 2e The structural breakdown diagram of each winding in Figure 2e and Figure 2fThe first main winding 221 includes a main body 221c, a first end 221d, a second end 221e, a first pin 221a connected to the first end 221d, and a second pin 221b connected to the second end 221e; the first pin 221a is arranged on the top surface of the magnetic core, and the second pin 221b is arranged on the bottom surface of the magnetic core or protrudes from the bottom surface of the magnetic core; the second main winding 222 includes a main body 222c, a first end 222d, a second end 222e, a first pin 222a connected to the first end 222d, and a second pin 222b connected to the second end 222e; the first pin 222a is arranged on the top surface of the magnetic core, and the second pin 222b is arranged on the bottom surface of the magnetic core or protrudes from the bottom surface of the magnetic core. The first end 221d of the first main winding 221 and the first end 222d of the second main winding 222 are both arranged adjacent to the first side of the magnetic core 211, i.e., the first side of the two-phase VRM module 10; the second end 221e of the first main winding 221 and the second end 222e of the second main winding 222 are both arranged adjacent to the third side of the magnetic core 211, i.e., the third side of the two-phase VRM module 10. The first auxiliary winding 223 includes a main body 223c, a first end 223d, a second end 223e, a first pin 223a connected to the first end 223d, and a second pin 223b connected to the second end 223e; the first pin 223a and the second pin 223b are arranged on the bottom surface of the magnetic core or protrude from the bottom surface of the magnetic core; the second auxiliary winding 224 includes a main body 224c, a first end 224d, a second end 224e, a first pin 224a connected to the first end 224d, and a second pin 224b connected to the second end 224e; the first pin 224a and the second pin 224b are arranged on the bottom surface of the magnetic core or protrude from the bottom surface of the magnetic core; the first end 223d and the second auxiliary winding 223 are arranged on the bottom surface of the magnetic core or protrude from the bottom surface of the magnetic core; The first end 224d of group 224 is arranged adjacent to the first side surface of the magnetic core 211, and the second end 223e of the first auxiliary winding 223 and the second end 224e of the second auxiliary winding 224 are arranged adjacent to the third side surface of the magnetic core 211; the Vin electrical connector 231 includes a first pin 231a and a second pin 231b, the first pin 231a is arranged on the top surface of the magnetic core; the second pin 231b is arranged on the bottom surface of the magnetic core or protrudes from the bottom surface of the magnetic core; the GND electrical connectors 241 and 242 respectively include a first pin 241a / 242a and a second pin 241b / 242b, the first pin 241a / 242a is arranged on the top surface of the magnetic core; the second pin 241b / 242b is arranged on the bottom surface of the magnetic core or protrudes from the bottom surface of the magnetic core.

[0109] The first main winding 221 and the second main winding 222 are both "Z"-shaped copper sheets, and the first end 221d and the second end 221e of the first main winding 221 extend from the main body 221c to the top surface and the bottom surface of the magnetic core 211 respectively; the first end 222d and the second end 222e of the second main winding 222 extend from the main body 222c to the top surface and the bottom surface of the magnetic core 211 respectively. The first auxiliary winding 223 and the second auxiliary winding 224 are both "["-shaped, and the first end 223d and the second end 223e of the first auxiliary winding 223 extend from the main body 223 to the bottom surface of the magnetic core 211 respectively; the first end 224d and the second end 2234e of the second auxiliary winding 224 extend from the main body 224 to the bottom surface of the magnetic core 211 respectively. The first auxiliary winding 223 is disposed adjacent to the first main winding 221 , and a body 223 c of the first auxiliary winding 223 and a body 221 c of the first main winding 221 extend from respective first ends to second ends along the same direction. This arrangement of the main winding and the auxiliary winding not only makes the inductance of the main winding and the inductance of the auxiliary winding large, but also makes the external connection of the main winding and the auxiliary winding simpler. Specifically, the second end 223e of the first auxiliary winding 223 and the first end 224d of the second auxiliary winding 224 are short-circuited outside the inductor component 210, and the first end 223d of the first auxiliary winding 223 and the second end 224e of the second auxiliary winding 224 are respectively connected to the auxiliary windings of the other two-phase VRM module 10; and because the length of the main winding and the corresponding auxiliary winding adjacent to the main winding is long, the coupling between the main winding and the corresponding auxiliary winding is good; it is beneficial to improve the equivalent steady-state inductance of each phase of the two-phase TLVR inductor, thereby maintaining the efficiency of the VRM module; at the same time, it is beneficial to reduce the equivalent dynamic inductance of each phase of the two-phase TLVR inductor, so as to improve the dynamic performance of the module. The inductor component 210 is formed by pressing iron powder or magnetic powder, that is, the non-winding area of ​​the inductor core 211 is mainly iron powder or magnetic powder with a certain magnetic permeability (its magnetic permeability is x); in addition, the main winding and the corresponding auxiliary winding are arranged adjacent to each other, but the two need to maintain an insulation distance, and an insulating material is arranged, or some materials with a magnetic permeability much lower than x are arranged to ensure that the main winding and the auxiliary winding are strongly coupled while also meeting the need for electrical isolation to ensure that the two-phase VRM module 10 can work reliably. A material with a magnetic permeability of x is arranged between the two-phase main windings, and they are at a certain distance from each other, so that there is a weak positive coupling or no coupling relationship between the two main windings.

[0110] The winding and the second pin of the electrical connector in this embodiment both protrude a certain height from the bottom surface of the magnetic core, such as Figure 2dThe height 202 shown; in another embodiment, the second pin of the winding and the electrical connector can also be set at the same height as the bottom surface of the magnetic core. In this embodiment, there is a height difference between the bottom surface of the magnetic core and the second pin, so that there is a certain accommodation space between the magnetic core and the bottom substrate 310 for arranging the output capacitor 360; the height of the accommodation space (i.e., the height 202) is higher than the height of the output capacitor 360, and a certain space needs to be reserved between the bottom surface of the magnetic core and the upper surface of the output capacitor 360; for example, under the condition of extreme tolerance, there is still a 0.1mm space between the bottom surface of the magnetic core and the upper surface of the output capacitor 360 for the flow and filling of the plastic packaging material 270; after the filling of the plastic packaging material 270, the inductor component 210, the output capacitor 360, and the bottom substrate are effectively bonded together. In this way, even under the conditions of high-temperature reflow soldering and melting of the solder joints, the electrical connection between the three will not be destroyed.

[0111] The present invention also discloses the manufacturing process of the VRM module, and the process flow is briefly described as follows: first, the output capacitor 360 and the inductor component 210 are welded on the bottom substrate 310; then the welded components are placed in the mold cavity, and the plastic packaging material is injected to plasticize the components to form an integrated component 200C; and the first pins of the winding and the power electrical connector on the integrated component 200C are exposed by laser or other means, and then the first pads are formed by electroplating on the first pins. Figure 2bAs shown, the first pad 221a1 of the first main winding 221 and the first pad 222a1 of the second main winding 222, the first pad 231a1 of the Vin connector 231, and the first pad 241a1 / 242a1 of the GND connector 241 / 242; and the signal electrical connector 251 is formed by electroplating on the upper surface and side wall of the molding compound 270 and the side wall and lower surface of the bottom substrate 310, connecting the upper surface and side wall of the molding compound 270 and the side wall and lower surface of the bottom substrate 310, and the bottom component 200B is obtained. The signal electrical connector 251 is formed by electroplating on the surface of the molding compound 270 and the surface of the bottom substrate 310, and the materials of the molding compound 270 and the bottom substrate 310 are both non-metallic materials; before electroplating, it is necessary to perform surface treatment before electroplating at the electroplating position, and the surface treatment includes roughening, degreasing, activation, etc., and then metal electroplating is performed. Surface treatment before electroplating can effectively improve the quality of electroplating and the adhesion of the coating. The signal electrical connector 151 extends from the upper surface of the plastic encapsulation material 270 to the side of the plastic encapsulation material 270, and then extends to the lower surface of the bottom substrate 310, so that the signal electrical connector 151 occupies a small space and has low cost. Because there are other metal traces and pads on the lower surface of the bottom substrate; if the bottom substrate is directly electroplated together, the acidic electroplating solution will corrode or destroy the metal traces and pads on the bottom surface of the bottom substrate; therefore, before the signal connector 251 is electroplated, the bottom metal traces and pads of the bottom substrate need to be treated with acid resistance protection, and after the signal connector 251 is electroplated, the metal traces and pads at the bottom of the bottom substrate are restored and treated for solderability.

[0112] In another preferred embodiment, the metal traces and pads on the bottom surface of the bottom substrate may not be realized through the PCB process, that is, there are no metal traces and pads on the bottom surface of the bottom substrate 310, and the metal traces and pads actually required on the bottom surface of the bottom substrate are realized together through electroplating when the signal connector 251 is electroplated.

[0113] The above process flow for realizing the signal electrical connector 251 is all realized on the basis of the single integrated component 200C. In order to shorten the production time and improve the production efficiency, the process can also be carried out in a continuous manner; the detailed steps are as follows: Figure 2g As shown, specifically:

[0114] Step S1: soldering the output capacitor 360 and the inductor assembly 210 to the connecting piece of the bottom substrate 310;

[0115] Step 2 S2: placing the welded component piece into the mold cavity, injecting a plastic sealing material, and plastic sealing the welded component to form a plastic sealing piece;

[0116] Step 3 S3: on the top surface of the plastic package connecting piece, the first pins of the winding and the power electrical connector are exposed by laser or other methods;

[0117] Step 4 S4: drilling holes at target positions of the signal electrical connectors 251 on the plastic package connection sheet;

[0118] Step 5 S5: electroplating the plastic package winding, the first pin of the power electrical connector, and the via hole at the position of the signal electrical connector 251;

[0119] Step 6 S6: etching the bottom of the connected piece of the bottom substrate 310 to generate the metal traces and pads required for the bottom surface of the bottom component 200B;

[0120] Step 7 S7: Cut the board along the position of the signal electrical connector 251 through the hole to obtain a bottom component 200B with a side wall having a plated half hole; the plated half hole realizes the function of the signal electrical connector 251 on the bottom component 200B.

[0121] refer to Figure 2b The signal electrical connector 251 is respectively arranged on the second side and the fourth side opposite to the bottom component 200B, that is, the second side and the fourth side of the two-phase VRM module 10, and close to the third side adjacent to the second pin 221b / 222b of the main winding; the second pin 221b / 222b of the main winding is the output of the VRM module, and its voltage Vo is a relatively static potential; and the first pin 221a / 222a of the main winding is connected to the SW pad of the corresponding IPM unit, which is a potential point where the voltage jumps rapidly, and the rapidly jumping voltage is easy to cause electric field interference; therefore, the signal electrical connector is arranged close to the second pin of the main winding, which can reduce the electric field interference caused by the rapidly changing voltage of the first pin 221a / 222a of the main winding on the signal electrical connector 251.

[0122] Reference Figure 2a and Figure 2b After the IPM units 121 / 122, capacitors 130 and passive components 140 on the top component 100 are welded to the top surface of the top substrate 110, the bottom surface of the top substrate 110 of the top component 100 is welded together with the top surface of the bottom component 200B, and a complete two-phase VRM module 10 is obtained. In the two-phase VRM module 10, only the welding points on the top and bottom surfaces of the top substrate 110 are exposed, and the welding points on the bottom component 200B are covered by the plastic packaging material 270, so the number of exposed welding points is greatly reduced, which improves the reliability of the electrical connection of the two-phase VRM module during reflow soldering.

[0123] The first pads 221a1 / 222a1 of the main winding are respectively vertically connected to the SW pads of the IPM units 121 / 122; the first pads 241a1 / 242a1 of the GND electrical connector are respectively vertically connected to the GND pads of the IPM units 121 / 122. Because the current flowing through the main winding and the current flowing through the GND electrical connector are both large currents, the first pads 221a1 / 222a1 of the main winding are vertically connected to the SW pads of the IPM, or the first pads 241a1 / 242a1 of the GND electrical connector are vertically connected to the GND pads of the IPM, which can reduce the loss caused by the lateral current of the top substrate 110, thereby improving the efficiency of the VRM module.

[0124] The Vin electrical connector 231 and the GND electrical connector 241 / 242 in the first embodiment disclosed by the present invention are both rectangular copper pillars. Similar to the main winding 221 / 222, the two ends of the Vin electrical connector 231 are respectively provided with a first pin 231a and a second pin 231b, and the two ends of the GND electrical connector are respectively provided with a first pin 241a / 242a and a second pin 241b / 242b. The rectangular copper pillar has low DC impedance and low DC conduction loss, which is conducive to improving the conversion efficiency of the VRM module; in other embodiments, the Vin electrical connector and the GND electrical connector may also be cylindrical; the cylindrical copper pillar is easy to be integrally formed with the magnetic core 211, which simplifies the manufacturing process and improves the reliability of the VRM module. This is not limited to this.

[0125] Refer to the structure of the VRM module above and Figure 1a and Figure 1b, there is parasitic inductance in the power input loop formed by Vin electrical connector 231 / 232, input capacitor Cin and GND electrical connector 241 / 242, and the presence of parasitic inductance will form resonance with input capacitor Cin; when the resonance frequency is close to the equivalent switching frequency of VRM, the current amplitude flowing through the parasitic inductance will increase significantly, so that it will interfere with the normal operation of the VRM module, resulting in a decrease in the conversion efficiency of the VRM module. Here, if the PWM phases of IPM units 121 and 122 are the same, the equivalent switching frequency of the two-phase VRM module 10 is equal to the switching frequency of the IPM; if the PWM phases of IPM units 121 and 122 differ by 180 degrees, the equivalent switching frequency of the two-phase VRM module 10 is equal to twice the switching frequency of the IPM. In this embodiment, the Vin electrical connector 231 and the GND electrical connector 241 / 242 are arranged on different sides, that is, the Vin electrical connector is arranged on the first side of the magnetic core 211 (in another embodiment, it can also be arranged on the third side of the magnetic core 211), and the GND electrical connectors are respectively arranged on the second side and the fourth side of the magnetic core 211. With this layout, the parasitic inductance in the power input loop can be increased, thereby reducing the resonant frequency between the parasitic inductance and Cin, so that the resonant frequency is much lower than the equivalent switching frequency of the two-phase VRM module 10, thereby reducing the impact of the resonance on the efficiency of the VRM module and improving the conversion efficiency of the VRM module.

[0126] The bottom substrate 310 of the bottom component 200B is a bottom wiring conversion layer, which is used to rearrange the bottom pins of the VRM module 10, so that the top surface pin layout of the substrate 310 is different from the bottom surface pin layout, thereby meeting the requirements of industrial standardized pin layout or customized packaging pin layout. In addition, the capacitor element 360 is located between the inductor component 210 and the bottom substrate 310, so that the capacitor element 360 is closer to the load, thereby reducing the parasitic parameters in the capacitor element 360 and the load electrical circuit; when the load current jumps rapidly, the capacitor element 360 can quickly provide energy to the load to ensure the stability of the output voltage, thereby meeting the dynamic performance of the output voltage of the VRM module 10.

[0127] Embodiment 2

[0128] Figure 3a The overall structure of the integrated power converter module of the second embodiment of the present invention is shown, which may be a two-phase VRM module or a two-phase TLVR VRM module; Figure 3b yes Figure 3a Exploded diagram of Figure 3a and Figure 3bAs shown, the two-phase VRM module 10 of this embodiment includes a top component 100 and a bottom component 200B; the top component 100 includes a top substrate 110 , IPM units 121 / 122 , input capacitors 130 and other passive components 140 . The top component 100 in this embodiment has the same technical effect as the top component 100 in the first embodiment, and the difference lies in the different positions of the parts on the top component. The first IPM unit 121 and its SW pad are placed close to the first side of the top component 100, that is, the first side of the two-phase VRM module 10; the second IPM unit 122 and its SW pad are placed close to the third side of the top component 100, that is, the third side of the two-phase VRM module 10; the input capacitor 130 is arranged adjacent to the second side and the fourth side of the top component 100, that is, the second side and the fourth side of the two-phase VRM module 10; the other passive components 140 are respectively arranged adjacent to the first side and the third side of the two-phase VRM module 10, and the passive components 140 are respectively arranged adjacent to the two IPM units; the above layout can make the first pad 221a / 222a of the main winding 221 / 222 and the SW pad of the IPM unit vertically connected nearby, thereby reducing the loss caused by the lateral current of the top substrate 110, thereby improving the conversion efficiency of the VRM module.

[0129] Figure 3c is a structural exploded view of the bottom component 200B, Figure 3d for Figure 3c The structural exploded diagram of the integrated component 200C, Figure 3e yes Figure 3d The structural exploded view of the inductor assembly 210, Figure 3f yes Figure 3eThe structural decomposition diagram of each winding in the embodiment. The overall structure and implementation method of this embodiment are basically the same as those of the first embodiment. One difference lies in the layout of the main windings in the inductor component 210. In the inductor component 210 in this embodiment, the first main winding 221 and the second main winding 222 are also "Z"-shaped copper sheets. The difference is that the first end 221d of the first main winding 221 is arranged adjacent to the first side of the two-phase VRM module 10, and the second end 221e is arranged adjacent to the third side of the two-phase VRM module 10; here the second end 221e extends downward along the third side of the two-phase VRM module 10 (that is, the first main winding and the second main winding are arranged in a second-order rotationally symmetrical manner); in other embodiments, the second end 221e may not be exposed to the third side of the two-phase VRM module 10, but may extend downward through the lower bottom plate of the magnetic core 211. The first end 222d of the second main winding 222 is disposed adjacent to the third side of the two-phase VRM module 10, and the second end 222e is disposed adjacent to the first side of the two-phase VRM module 10; the second end 222e here extends downward along the first side of the two-phase VRM module 10; in other embodiments, the second end 222e may not be exposed to the first side of the two-phase VRM module 10, but may extend downward through the lower bottom plate of the magnetic core 211. This arrangement of the first main winding 221 and the second main winding 222 achieves anti-coupling between the two, and obtains the benefit that the equivalent dynamic inductance of the main winding is smaller than the equivalent steady-state inductance.

[0130] The first auxiliary winding 223 and the second auxiliary winding 224 are both in the shape of a “[”, and have basically the same structure as the first auxiliary winding 223 and the second auxiliary winding 224 in Embodiment 1; and the first auxiliary winding 223 is arranged adjacent to the first main winding 221, and the second auxiliary winding 224 is arranged adjacent to the second main winding 222; the difference is that the first auxiliary winding 223 and the second auxiliary winding 224 are respectively placed on the outside of the first main winding 221 and the second main winding 222. The extension direction of the main body 221c of the first main winding 221 from the first end 221d to the second end 221e is the same as the extension direction of the main body 223c of the first auxiliary winding 223 from the first end 223d to the second end 223e; the extension direction of the main body 222c of the second main winding 222 from the first end 222d to the second end 222e is opposite to the extension direction of the main body 224c of the second auxiliary winding 224 from the first end 224d to the second end 224e; the specific manner in which the auxiliary winding is short-circuited outside the inductor component 210 is different from that in the first embodiment, specifically, the second end 223e of the first auxiliary winding 223 is short-circuited with the second end 224e of the second auxiliary winding 224 outside the inductor component 210, rather than being short-circuited with the first end 224d of the second auxiliary winding 224 outside the inductor component 210. The layout of the main winding and the auxiliary winding as described above can also make the inductance of the main winding and the auxiliary winding large. Because the main winding and the auxiliary winding are adjacent to each other for a long length, the coupling between the main winding and the corresponding auxiliary winding is good, which is conducive to maintaining the equivalent steady-state inductance of each phase of the two-phase TLVR inductance, thereby maintaining the conversion efficiency of the VRM module; at the same time, it is conducive to reducing the equivalent dynamic inductance of each phase of the two-phase TLVR inductance, thereby improving the dynamic performance of the VRM module. This winding setting, based on the two-phase TLVR inductance, enables the first main winding 221 and the second main winding 222 to satisfy the anti-coupling relationship, thereby obtaining the benefit that the equivalent dynamic inductance of the main winding is further smaller than the equivalent steady-state inductance. In this embodiment, the second end 223e of the first auxiliary winding and the second end 224e of the second auxiliary winding extend downward along the third side surface and the first side surface of the two-phase VRM module 10 respectively; in other embodiments, the second end 223e of the first auxiliary winding and the second end 224e of the second auxiliary winding may not be exposed to the third side surface and the first side surface of the two-phase VRM module 10, but extend downward through the lower base plate of the magnetic core 211 together with the main winding.

[0131] At the same time, insulating material is arranged between the first main winding 221 and the second main winding 222, or some materials with a magnetic permeability much lower than x are arranged, so that the two-phase main windings have stronger magnetic coupling; the currents in the two-phase main windings both flow in from the first pin on the top surface, and the currents flowing through the main body of the main windings are in opposite directions, and the magnetic fluxes cancel each other out, that is, the two-phase main windings work in a stronger anti-coupling state; the strong anti-coupling between the main windings can further widen the gap between the equivalent steady-state inductance and the equivalent dynamic inductance of each phase.

[0132] Embodiment 3

[0133] Figure 4a Another implementation of the inductor component 210 in the embodiment of the present invention is shown; only the inductor core 211 and the main windings 221 / 222 and the auxiliary windings 223 / 224 are shown, and the power connectors are not shown. Figure 4b yes Figure 4a The structural decomposition diagram of Figure 4b As shown, the inductor assembly includes a magnetic core 211, a first main winding 221, a second main winding 222, a first auxiliary winding 223, and a second auxiliary winding 224; the first main winding 221 and the second main winding 222 are both horizontally placed "J"-shaped windings, and the first main winding 221 includes a first pin 221a, a second pin 221b, a first body 221-1, a second body 221-2, a third body 221-3, a first end 221-4 connected to the first pin 221a, and a second end 221-5 connected to the second pin 221b. The first pin 221a and the second pin 221b are both adjacent to the first side surface of the magnetic core, and the first pin 221a is arranged on the top surface of the magnetic core, and the second pin 221b is arranged on the bottom surface of the magnetic core or protrudes from the bottom surface of the magnetic core; the first end 221-4 and the second end 221-5 are partially exposed on the first side surface. The second main winding 222 includes a first pin 222a, a second pin 222b, a first body 222-1, a second body 222-2, a third body 222-3, a first end 222-4 connected to the first pin 222a, and a second end 222-5 connected to the second pin 222b. The first pin 222a and the second pin 222b are both adjacent to the third side surface of the magnetic core, and the first pin 222a is arranged on the top surface of the magnetic core, and the second pin 222b is arranged on the bottom surface of the magnetic core or protrudes from the bottom surface of the magnetic core; the first end 222-4 and the second end 222-5 are partially exposed on the third side surface (that is, the first main winding and the second main winding are arranged in a second-order rotationally symmetrical manner). The first pin 221a / 222a is electrically connected to the corresponding IPM unit SW pad upward; the second pin 221b / 222b is electrically connected to the load downward.

[0134] The inductor component 210 is formed by pressing iron powder or magnetic powder, that is, the non-winding area of ​​the inductor core 211 is mainly iron powder or magnetic powder with a certain magnetic permeability, such as a material with a magnetic permeability of x; the second body 221-2 of the first main winding 221 and the second body 222-2 of the second main winding 222 are arranged adjacent to each other, but an insulation distance needs to be maintained between the two, and insulating materials, or some materials with a magnetic permeability much lower than x, are arranged to achieve electrical insulation between the two windings and improve the coupling coefficient between the two main windings; and because the currents in the two-phase main windings all flow in from the first pin, the currents flowing through the second bodies of the two main windings are in opposite directions, so that the magnetic fluxes generated by the currents flowing through the second bodies cancel each other out; therefore, the second bodies of the two main windings work in an anti-coupling state; but the first body of the first main winding 221 and the third body of the second main winding 223 are in a positive coupling state, and the third body of the first main winding 221 and the first body of the second main winding 223 are also in a positive coupling state. The structure of the first main winding 221 and the second main winding 223 and the arrangement of first forward coupling, then reverse coupling and then forward coupling make the steady-state equivalent inductance of each main winding of the inductor component 210 greater than the dynamic equivalent inductance.

[0135] The first auxiliary winding 223 is arranged adjacent to the first body 221-1 of the first main winding 221 and the third body 222-3 of the second main winding 222, and only insulating material or material with a magnetic permeability much lower than x is arranged between the first auxiliary winding 223 and the two-phase main windings, so as to achieve electrical insulation between the windings and improve the coupling coefficient between the auxiliary winding and the main winding; the first auxiliary winding 223 includes a body 223c, a first end 223d, a second end 223e, a first pin 223a connected to the first end 223d, and a second pin 223b connected to the second end 223e, the first end The end portion 223d and the second end portion 223e extend from the main body 223c to the bottom surface of the magnetic core 211, and the first pin 223a and the second pin 223b are arranged on the bottom surface of the magnetic core or protrude from the bottom surface of the magnetic core; the current flowing through the first auxiliary winding 223 flows from the first pin 223a to the second pin 223b, so the current flowing through the first auxiliary winding 223 is in the same direction as the current flowing through the first main body 221-1 of the first main winding 221 and the current flowing through the third main body 222-3 of the second main winding 222, and the magnetic fluxes reinforce each other, so the first auxiliary winding 223 is positively coupled with the two-phase main windings 221 / 222.

[0136] The second auxiliary winding 224 is arranged adjacent to the third body 221-3 of the first main winding 221 and the first body 222-1 of the second main winding 222, and only insulating material or material with a magnetic permeability lower than x is arranged between the second auxiliary winding and the two-phase main windings, so as to achieve electrical insulation between the windings and improve the coupling coefficient between the auxiliary winding and the main winding. The second auxiliary winding includes a main body 224c, a first end 224d, a second end 224e, a first pin 224a connected to the first end 224d, and a second pin 224b connected to the second end 224e. The first end 224d and the second end 224e extend from the main body 224c to the bottom surface of the magnetic core 211, and the first pin 224a and the second pin 224b are arranged on the bottom surface of the magnetic core or protrude from the bottom surface of the magnetic core. The current flowing through the second auxiliary winding 224 flows from the second pin 224b to the first pin 224a. Therefore, the current flowing through the second auxiliary winding 224 has the same direction as the current flowing through the third main body 221-3 of the first main winding 221 and the current flowing through the first main body 222-1 of the second main winding 222. The magnetic fluxes reinforce each other, so the second auxiliary winding 224 is positively coupled with the two-phase main windings 221 / 222.

[0137] The first auxiliary winding 223 and the second auxiliary winding 224 can be connected in series first, and then connected in series with the auxiliary windings or compensation inductors Le of other two-phase VRM modules to form a closed loop, thereby realizing the function of a two-phase TLVR inductor. Specifically, the second end 223e of the first auxiliary winding 223 is connected in series with the first end 224d of the second auxiliary winding 224. In another extended embodiment, the first auxiliary winding 223 and the second auxiliary winding 224 can be connected in parallel first, and then connected in series with the auxiliary windings or compensation inductors Le of other two-phase VRM modules to form a closed loop, thereby realizing the function of a two-phase TLVR inductor. Specifically, the first end 223d of the first auxiliary winding 223 is short-circuited with the first end 224d of the second auxiliary winding 224, and the second end 223e of the first auxiliary winding 223 is short-circuited with the second end 224e of the second auxiliary winding 224.

[0138] Figure 3a and Figure 4a In the two-phase TLVR inductor in the embodiment shown, the two-phase main windings work in a reverse coupling state; in some embodiments, the auxiliary winding may not be provided, and the two-phase main windings are only used as two reverse coupled inductors to achieve lower dynamic inductance and higher steady-state inductance, taking into account both dynamic performance and steady-state efficiency, and at the same time reducing the difficulty of inductor manufacturing and saving the cost of inductor.

[0139] right Figure 3c The embodiment shown is further extended as follows: Figure 3g The embodiment shown. Figure 3cThe difference is that the inductor component 210 and the bottom substrate 310 are connected via a copper pillar 410. The process flow is briefly described as follows:

[0140] Step 1, prepare an inductor assembly 210, wherein the inductor assembly 210 comprises a magnetic core 211, a main winding and / or an auxiliary winding, a Vin connector and a GND connector; the pins of the inductor winding and the pins of the connector are at nearly the same height as the top surface or the bottom surface of the magnetic core;

[0141] Step 2, solder the inductor assembly 210 to the connecting frame. The frame includes multiple units, each of which includes Figure 3g All the copper pillars 410 described in the figure are connected into a whole through connecting ribs 411 between units. The thickness of the connecting ribs 411 is about 1 / 3 to 2 / 3 of the thickness h1 of the copper pillars 410.

[0142] Step 3, cut the connected frame from the connecting rib 411 to obtain an independent unit body, that is, Figure 3g The inductor component 210 and the copper pillar 410 are connected to form a whole.

[0143] Step 4, the unit body formed in step 3 and the output capacitor 360 are surface mounted on the bottom substrate 310. At this time, the bottom substrate 310 is a connected board structure; through this process, multiple unit bodies formed in step 3 are welded on the surface of the bottom substrate.

[0144] Step 5, plastic encapsulate the whole of step 4, and then form signal pins through drilling and metallization process. The signal pins extend from the top surface of the inductor to the bottom surface of the bottom substrate, and finally form the following through the sub-board Figure 3c The appearance structure shown.

[0145] Optionally, step 5 also includes, before depaneling, forming required metal traces and pad structures on the bottom substrate 310 by an etching process.

[0146] This embodiment introduces a continuous metal frame, which can simplify the manufacturing process of the inductor assembly 210 to meet mass production requirements. On the other hand, due to the large cross-sectional area of ​​the copper column, the on-resistance can be effectively reduced.

[0147] Figure 3h The continuous metal frame shown is Figure 3g The substrate 500 can be realized by embedding a metal block in a printed circuit board (PCB), or by a plastic-encapsulated metal block plus a metallization process. The structure at least includes a power pin 241, which realizes Figure 3gThe function of the copper pillar described in. In addition to the power pin 241, the substrate 500 may also include a signal pin 251, so that the signal pin 251 and the power pin 241 are integrated on one substrate, which can ensure a sufficiently good flatness. At the same time, because it is achieved by embedding a metal block in the PCB or a plastic-encapsulated metal block plus a metallization process, the spacing between the signal pins can be made small enough to meet the needs of high-density wiring. At the same time, in order to meet the needs of module plastic encapsulation, the substrate 500 may also include a plurality of depth control grooves 501, and the depth control grooves 501 are located on the upper and lower surfaces of the substrate, which are used to provide a mold flow channel for the plastic material when the bottom module 200B is plastic-encapsulated.

[0148] Embodiment 4

[0149] Figure 5a Shown Figure 1a An embodiment of the two-phase VRM buck circuit; Figure 5a As shown, the VRM module 10 includes a top component 100, an integrated inductor 200, and a bottom substrate 300; the top substrate 100 and Figure 2a The embodiments described have the same technical effects and will not be described in detail here; the bottom substrate 300 only serves as a transfer board for the output pins of the VRM module to meet the needs of different customers and different application scenarios; and the main problem solved by this embodiment is to further enhance the anti-interference capability of the signal electrical connection on the integrated inductor 200.

[0150] Figure 5b yes Figure 5a The structural diagram of the integrated inductor 200 is shown in FIG. Figure 5c yes Figure 5b The structural breakdown diagram of Figure 5d It is a schematic diagram of the structure after removing the plastic packaging material; Figure 5b , Figure 5c and Figure 5dAs shown, the integrated inductor 200 includes a magnetic core 211, a first main winding 221, a second main winding 222, a Vin electrical connector 231, a GND electrical connector 241 / 242, a plastic package 270, and a signal electrical connector 251; the first main winding 221 and the second main winding 222 are "I"-shaped copper pillars, and the first main winding 221 includes a first pin 221a, a second pin 221b (not shown) and a body 221c (not shown), the first pin 221a is arranged on the top surface of the magnetic core, and the second pin 221c is arranged on the top surface of the magnetic core. The first main winding 221 is provided on the bottom surface of the magnetic core, the main body 221c extends from the top surface of the magnetic core to the bottom surface of the magnetic core, and the first main winding 221 is provided adjacent to the first side surface of the magnetic core; the second main winding 222 includes a first pin 222a, a second pin 222b (not shown) and a main body 222c (not shown), the first pin 222a is provided on the top surface of the magnetic core, the second pin 222b is provided on the bottom surface of the magnetic core, the main body 222c extends from the top surface of the magnetic core to the bottom surface of the magnetic core, and the second main winding 222 is provided adjacent to the first side surface of the magnetic core. The Vin electrical connector 231 is provided adjacent to the third side surface of the magnetic core, and the GND electrical connectors 241 / 242 are provided adjacent to the second side surface and the fourth side surface of the magnetic core, respectively. After the magnetic core 211, the first main winding 221, the second main winding 222, the Vin electrical connector and the GND electrical connector are pressed or assembled as a whole, they are sealed together by the plastic packaging material 270, and then the first pin and the second pin of the winding and the pins of the Vin electrical connector and the GND electrical connector are exposed on the top and bottom surfaces of the plastic packaging material, such as by laser or other processes, and then the pads are electroplated on the exposed pins by electroplating; at the same time, the signal electrical connector 251 is electroplated on the plastic packaging material 270, specifically from the top surface along the side to the bottom surface of the plastic packaging material 270. The signal electrical connector 251 and the magnetic core 211 are separated by the plastic packaging material 270 and the Vin electrical connector 231; and the part of the Vin electrical connector between the top surface pin and the bottom surface pin has a width greater than the width of the pin. The advantage of this is that because the main winding is an "I"-shaped copper column, there is a parasitic capacitance between it and the signal electrical connector. Therefore, the rapidly changing voltage on the winding is easily coupled to the signal electrical connector through the parasitic capacitance, affecting the signal transmission quality and the normal operation of the VRM module. The present invention widens the middle part of the Vin electrical connector 231, and then uses a plastic encapsulation process to electroplate the signal electrical connector 251 on the plastic encapsulation material 270. The signal electrical connector 251 is separated from the main winding by the plastic encapsulation material 270 and the Vin electrical connector. Therefore, the Vin electrical connector 231, which is a relative static potential, acts as a shielding layer, shielding the electric field interference of the main winding on the signal electrical connector 251; improving the signal quality of the VRM module and the reliability of the module. It should be noted that the width of the middle part of the Vin electrical connector needs to cover the signal electrical connector that needs to be shielded; the signal electrical connector that does not need to be shielded can be set on the second side or the fourth side of the magnetic core.

[0151] Figure 5e is another preferred solution of the integrated inductor 200 of this embodiment. Figure 5f yes Figure 5e The structural breakdown diagram of Figure 5g This is a schematic diagram of the structure after removing the plastic packaging material. Figure 5e , Figure 5f and Figure 5g As shown, this embodiment and Figure 5a The integrated inductor 200 in the above embodiment has the same technical effect, and the difference is that the structure of the Vin electrical connector is different, such as Figure 5g As shown, the Vin electrical connector 231 is arranged on the top surface, the bottom surface and the third side surface of the magnetic core; a step 2311 is arranged between the pin of the Vin electrical connector 231 arranged on the top surface or the bottom surface and the middle part arranged on the third side surface, and the height of the step 2311 is lower than the height of the top surface or the bottom surface of the magnetic core; after being molded by the molding compound 270, the molding compound on the step 2311 has a sufficient thickness, so that the molding compound on the step 2311 can also be used to set the signal electrical connector, so that the third side surface has a wider width for setting the signal connector 251, that is, the Vin electrical connector 231 can cover more signal connectors, thereby achieving a better shielding effect; at the same time, the signal electrical connector 251 is only arranged on the same side of the magnetic core, that is, the third side surface, which has the advantage of simple pretreatment process before electroplating, which helps to reduce costs.

[0152] Figure 5h is another preferred solution of the integrated inductor 200 of this embodiment. Fig.5I yes Figure 5h The structural decomposition diagram of Figure 5h and Fig.5I As shown, this embodiment and Figure 5a The integrated inductor 200 in the embodiment has the same technical effect, and the difference is that the signal electrical connector 251 is a pin header structure, which is assembled on the third side of the magnetic core by glue bonding; the middle part of the Vin electrical connector 231 is also widened compared to the pin part, and the shielding effect of the Vin electrical connector on the signal electrical connector 251 of the pin header structure can be achieved, thereby eliminating the electric field interference generated by the main winding on the signal electrical connector, so that the signal on the signal connector 251 can be reliably transmitted and work; at the same time, the assembly method of the pin header glued to the magnetic core can save the plastic packaging process and reduce the cost of the VRM module; further, the pin header assembly method has a large weldable area, and when assembled with the motherboard, the welding strength is good and the assembly reliability is good.

[0153] Embodiment 5

[0154] The present invention also discloses another embodiment of the inductor component, such as Figures 6a to 6c The inductor assembly 200 shown is Figure 1aA schematic diagram of an implementation of an inductor 200 is shown in FIG. Figure 6a is a top view of the inductor assembly 200, Figure 6b for Figure 6a The structural breakdown diagram of Figure 6c FIG. 2 is a bottom view of the inductor assembly 200. Figure 6a and Figure 6b As shown, the inductor 200 in this embodiment does not mark the Vin electrical connector, the GND electrical connector and the signal electrical connector. These electrical connectors can adopt any structure and setting method disclosed in the above embodiments, which will not be repeated here. Figure 6b The inductor assembly 200 shown includes a magnetic core 211, a first main winding 221, a second main winding 222, a first air gap 211-1 and second air gaps 211-2a and 211-2b. The structure and arrangement of the first main winding 221 and the second main winding 222 are similar to those of FIG. Figure 3c to Figure 3f The structures and settings of the first main winding 221 and the second main winding 222 are the same; the main winding is electrically connected to the corresponding IPM unit through the first pin set on the top surface of the magnetic core, and the main winding penetrates the lower bottom plate of the magnetic core 211 and is electrically connected to the load through the second pin set on the bottom surface of the magnetic core; the current flowing through the first main winding and the current flowing through the second main winding are opposite in direction, the main magnetic flux generated is opposite in direction, and the main magnetic flux cancels each other, so the two-phase inductance works in an anti-coupling state. In addition, the anti-coupling inductor is applied to Figure 1a In the two-phase VRM module shown, when the phase difference between the two-phase control pulses is 180 degrees, the anti-coupling inductor can obtain a larger steady-state inductance, which is beneficial to reduce the current ripple and improve the conversion efficiency of the VRM module; at the same time, the anti-coupling inductor can obtain a smaller dynamic inductance, which is beneficial to improve the dynamic performance of the output voltage. The first air gap 211-1 is set between the two main windings, and runs from the second side of the magnetic core 211 to the opposite fourth side; the second air gaps 211-2a and 211-2b are respectively set on the second side and the fourth side of the magnetic core 211, and are parallel to the first side or the third side of the magnetic core, and extend from the second side of the magnetic core 211 to the position of the second main winding 222, or extend from the fourth side of the magnetic core 211 to the position of the first main winding 221. The first air gap and the second air gap are both set on the path of the leakage flux, which can be used to adjust the size of the leakage inductance. For example, the larger the air gap, the smaller the leakage inductance, the better the coupling between the main windings, that is, the better the anti-coupling performance between the main windings, which is more conducive to improving steady-state efficiency and dynamic performance.

[0155] This embodiment Figure 6b The inductor 200 shown can be Figure 3e The inductor is matched with Figure 3bIn the top component 100, the second side of the magnetic core 211 corresponds to the second side of the top component 100, and the fourth side of the magnetic core 211 corresponds to the fourth side of the top component 100, so that the direction of the main winding is parallel to the first side or the third side of the top component 100, that is, parallel to the straight line running through the two IPM unit bodies; the advantage is that the size of the two-phase VRM module and the position of the IPM unit SW pad can be matched to optimize the performance of the inductor 200 and reduce the loss of the inductor 200. In another embodiment, the direction of the main winding can also be perpendicular to the first side or the third side of the top component 100, that is, perpendicular to the straight line running through the two IPM unit bodies.

[0156] Embodiment 6

[0157] Figure 7a FIG. 4 shows an embodiment of a VRM module with two-phase TLVR (Trans-inductor voltage regulator) technology. Figure 7a As shown, Figure 7b for Figure 7a , the VRM module 10 includes a top component 100 , an integrated inductor 200 , and a bottom substrate 300 .

[0158] The top component 100 includes a top substrate 110, a first IPM unit 121, a second IPM unit 122, an input capacitor 130 and other passive components 140. The first IPM unit 121 and the second IPM unit 122 are arranged in the middle of the upper surface of the top substrate 110, and the bridge arm midpoint SW of each IPM unit is arranged adjacent to the first side 151 of the VRM module. A portion of the capacitor of the input capacitor 130 is arranged on the upper surface of the top substrate 110 and adjacent to the first side 151 of the VRM module, and another portion of the capacitor of the input capacitor 130 is arranged between the two IPM units. Other passive components 140 are arranged on the upper surface of the top substrate 110 and adjacent to the third side 153 of the VRM module. The top component 100 has the same technical effects as the first and fourth embodiments, which will not be repeated here; the bottom substrate 300 is used as a transfer board for the output pins of the VRM module to meet the needs of different customers and different application scenarios, and corresponding passive components, such as output capacitors, can also be arranged. The main problem to be solved by this embodiment is how to obtain large inductance, good dynamic performance and anti-interference ability of the electrical connector.

[0159] Figure 7cThe integrated inductor 200 is a schematic diagram of an exploded view. The integrated inductor 200 includes a magnetic core 211, a first main winding 221, a second main winding 222, a first auxiliary winding 223, a second auxiliary winding 224, a Vin electrical connector 231, a GND electrical connector 241 / 242, a first auxiliary electrical connector 225, and a second auxiliary electrical connector 226. The first main winding 221 and the second main winding 222 are both "Z"-shaped windings. The first main winding 221 and the first auxiliary winding 223 have the same structural shape and are arranged adjacently; the second main winding 222 and the second auxiliary winding 224 have the same structural shape and are arranged adjacently. Electrical isolation needs to be achieved between each winding and the corresponding adjacent auxiliary winding. The two end faces of each winding are exposed to the upper surface and the lower surface of the VRM module respectively. The same winding shape and adjacent arrangement make the winding and the auxiliary winding have good coupling characteristics, which is conducive to the VRM module to obtain good dynamic characteristics. The Vin electrical connector 231 is disposed adjacent to the first side 151 of the magnetic core 211, and the GND electrical connectors 241 / 242 are disposed on the second side 152 and the fourth side 154 of the magnetic core 211, respectively. The first auxiliary electrical connector 225 and the second auxiliary electrical connector 226 are disposed adjacent to the first side 151 of the magnetic core 211, and are disposed on both sides of the Vin electrical connector 231, respectively; the first auxiliary electrical connector 225 and the first auxiliary winding 223, as well as the second auxiliary electrical connector 226 and the second auxiliary winding 224 are electrically connected in series through the top substrate 110 and the bottom substrate 300, forming an auxiliary loop of the TLVR, further improving the dynamic performance of the VRM module. In this embodiment, the first main winding and the second main winding are both surrounded by the magnetic core within the length of the winding, so that a large inductance can be obtained while obtaining a good dynamic effect.

[0160] Embodiment 7

[0161] Figure 8a Another embodiment of a VRM module with two-phase TLVR technology is shown. Figure 8a and Figure 8b As shown, the VRM module 10 includes a top component 100, an integrated inductor 200, and a bottom substrate 300. The features of the top component 100 and the bottom substrate 300 are the same as those of the sixth embodiment, and will not be described again.

[0162] like Figure 8cThe exploded schematic diagram of the integrated inductor 200 shown is different from that of the sixth embodiment in that the first auxiliary winding 223 and the second auxiliary winding 224 are both "n"-shaped, and both end surfaces of each auxiliary winding are exposed on the lower surface of the integrated inductor 200. The first main winding 221 is arranged adjacent to the first auxiliary winding 223, and electrical isolation is arranged between the two. The second main winding 222 is arranged adjacent to the second auxiliary winding 224, and electrical isolation is arranged between the two. One end of each winding adjacent to the first side 151 is exposed to the first side 151, and the other part of each winding is surrounded by the magnetic core. The Vin electrical connector 231 is arranged adjacent to the first side 151 of the magnetic core 211, and is arranged between the first auxiliary winding 223 and the second auxiliary winding 224. The GND electrical connectors 241 / 242 are respectively arranged on the second side 152 and the fourth side 154 of the magnetic core 211. In this embodiment, the first auxiliary electrical connector and the second auxiliary electrical connector are omitted, and the first auxiliary winding 223 and the second auxiliary winding 224 are electrically connected in series through the bottom substrate 300 to form a TLVR auxiliary winding circuit, further improving the dynamic characteristics of the VRM module. Compared with the sixth embodiment, the manufacturing method of the integrated inductor 200 disclosed in this embodiment is simpler.

[0163] Embodiment 8

[0164] Figure 9a Another embodiment of an integrated inductor in a VRM module with two-phase TLVR technology, Figure 9b is a schematic diagram of an exploded view of the integrated inductor 200, Fig.9c for Figure 9b A schematic side view of the inner section 155, Figure 9d for Figure 9b The integrated inductor 200 includes a first magnetic core 211, a second magnetic core 212, a first main winding 221, a second main winding 222, a first auxiliary winding 223, a second auxiliary winding 224, a Vin electrical connector 231 and a GND electrical connector 241 / 242. An air gap 213 is provided between the first magnetic core 211 and the second magnetic core 212. Fig.9c and Figure 9dAs shown, the first magnetic core 211 includes a first magnetic column 211a and a second magnetic column 211b, and a groove 211c is provided between the first magnetic column 211a and the second magnetic column 211b, which is used to accommodate the first main winding 221 and the first auxiliary winding 223. The second magnetic core 212 includes a first magnetic column 212a and a second magnetic column 212b, and a groove 212c is provided between the first magnetic column 212a and the second magnetic column 212b, which is used to accommodate the second main winding 222 and the second auxiliary winding 224. The first main winding 221 and the second main winding 222 are both "Z"-shaped and arranged in opposite directions, that is, the first main winding 221 is arranged adjacent to the third side surface 153 at the upper end surface of the upper surface of the integrated inductor 200, and adjacent to the first side surface 151 at the lower end surface of the lower surface; the second main winding 222 is arranged adjacent to the first side surface 151 at the upper end surface of the upper surface of the integrated inductor 200, and adjacent to the third side surface 153 at the lower end surface of the lower surface. The first auxiliary winding 223 is disposed adjacent to the first main winding 221 and is electrically isolated from the first main winding 221. Both end surfaces of the first auxiliary winding 223 are exposed to the lower surface of the integrated inductor 200. The second auxiliary winding 224 is disposed adjacent to the second main winding 222 and is electrically isolated from the second main winding 222. Both end surfaces of the second auxiliary winding 224 are exposed to the lower surface of the integrated inductor 200. Each auxiliary winding has the same shape as a portion of the first main winding 221 or the second main winding 222 and is disposed adjacent to each other, so that a strong coupling between the first main winding 221 or the second main winding 222 and each auxiliary winding can be achieved. When current flows into the upper end surface of the first main winding 221 or the second main winding 222 and flows out from the lower section, the currents flowing through the first main winding 221 and the second main winding 222 are opposite in direction in the magnetic core window (i.e., the horizontal portion of the grooves 211c and 212c), and the generated magnetic fluxes cancel each other out. Therefore, the first main winding 221 and the second main winding 222 work in an anti-coupling state. Anti-coupling can achieve a smaller dynamic inductance to achieve fast dynamic performance, while having a higher steady-state inductance to take into account the high efficiency requirements of the VRM module. The first auxiliary winding 223 and the second auxiliary winding 224 are both "n"-shaped, and are both arranged adjacent to the first main winding 221 or the second main winding 222. The first main winding 221, the second main winding 222, the first auxiliary winding 223, and the second auxiliary winding 224 adjacent to the first side surface 151 and the third side surface 153 of the magnetic core are respectively exposed on the corresponding side surfaces. Through the bottom substrate 300, the first auxiliary winding 223 and the second auxiliary winding 224 are connected in series to form a TLVR auxiliary winding circuit to implement TLVR technology, further reduce dynamic inductance, and improve the dynamic performance of the VRM module.

[0165] Embodiment 9

[0166] Embodiment 9 discloses another structure of an auxiliary winding, such as Fig.10a As shown, Fig.10b 2 is a bottom view of a two-phase inductor 200, which includes a magnetic core 211, a first main winding 221, a second main winding 222, a first auxiliary winding 223, a second auxiliary winding 224, a Vin electrical connector 231 (not shown), a GND electrical connector 241 / 242 (not shown), and a vertical plate 250. The first main winding 221 and the first auxiliary winding 223 are positively coupled, and the second main winding 222 and the second auxiliary winding 224 are positively coupled. There is no coupling relationship between the first main winding 221 and the second main winding 222, or there is only a weak coupling, for example, the coupling coefficient is less than 0.2.

[0167] The first main winding 221 and the second main winding 222 are both "Z"-shaped copper sheets, which extend from the first side surface 151 of the magnetic core 211 to the third side surface 153, and extend from the first side surface 151 of the magnetic core 211 to the top surface, and form the main winding first pins 221a and 222a on the top surface of the magnetic core 211; extend from the part of the magnetic core 211 close to the third side surface 153 to the bottom surface, and form the main winding second pins 221b and 222b on the bottom surface of the magnetic core 211.

[0168] The first auxiliary winding 223 and the second auxiliary winding 224 are both in a "Π" shape, and both extend from the first side surface 151 to the third side surface 153 of the magnetic core 211; one end of the first auxiliary winding 223 and the second auxiliary winding 224 extend from the first side surface 151 to the bottom surface, and form auxiliary winding first pins 223a and 224a on the bottom surface; the other ends of the first auxiliary winding 223 and the second auxiliary winding 224 extend from the third side surface 153 to the bottom surface, and bend along the bottom surface to the middle area of ​​the bottom surface of the magnetic core 211, and form auxiliary winding second pins 223b and 224b in the middle area of ​​the bottom surface. The advantage of this arrangement is that the coupling performance is taken into account and electrical isolation is easy to achieve between the second pin 221b of the main winding of the first main winding and the second pin 223b of the auxiliary winding of the first auxiliary winding 223; the coupling performance is taken into account and electrical isolation is easy to achieve between the second pin 222b of the main winding of the second main winding and the second pin 224b of the auxiliary winding of the second auxiliary winding 224, which improves the coupling coefficient between the main winding and the auxiliary winding and strengthens the insulation strength, thereby improving the dynamic performance while improving the reliability.

[0169] The structures of the first auxiliary winding 223 and the second auxiliary winding 224 shown in this embodiment can be applied to the above embodiments and can also obtain the same technical benefits. Other technical features are the same as those of the above embodiments and will not be repeated here.

[0170] The power conversion device described in the above embodiment can be a part of an electronic device or an independent power module, as long as the technical features and benefits disclosed by the present invention are met. The copper sheet or copper column disclosed in the present invention is not limited to copper, but can also be other conductive metals.

[0171] The “equal”, “same” or “equal” disclosed in the present invention must take into account the parameter distribution of the project, and the error distribution is within ±30%; the definition of two line segments or two straight lines being “parallel” is that the angle between the two line segments or two straight lines is less than or equal to 45 degrees; the definition of two line segments or two straight lines being “perpendicular” is that the angle between the two line segments or two straight lines is within the range of [60, 120] degrees; the definition of phase “misalignment” also needs to take into account the parameter distribution of the project, and the error distribution of the misalignment degree is within ±30%.

[0172] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0173] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An inductor component, characterized in that: comprising a magnetic core, a first main winding, a second main winding, a first auxiliary winding and a second auxiliary winding; The magnetic core comprises an opposite top surface and a bottom surface, an opposite first side surface and a third side surface, and an opposite second side surface and a fourth side surface; The first pin of the first main winding and the first pin of the second main winding are arranged on the top surface of the magnetic core; the second pin of the first main winding, the second pin of the second main winding, at least one pin of the first auxiliary winding and at least one pin of the second auxiliary winding are arranged on the bottom surface of the magnetic core; the first main winding and the second main winding pass through the magnetic core respectively; the first auxiliary winding is coupled to the first main winding, and the second auxiliary winding is coupled to the second main winding; any auxiliary winding is electrically isolated from the adjacent main winding.

2. The inductor assembly according to claim 1, characterized in that: The first main winding, the first auxiliary winding, the second auxiliary winding and the second main winding are arranged in sequence; the first auxiliary winding is arranged adjacent to the first main winding, and the second auxiliary winding is arranged adjacent to the second main winding; the first main winding and the second main winding respectively include a main body, a first end and a second end, and the first auxiliary winding and the second auxiliary winding respectively include a main body, a first end and a second end; the main body of the first auxiliary winding and the main body of the first main winding extend from their respective first ends to their second ends along the same direction, and the main body of the second auxiliary winding and the main body of the second main winding extend from their respective first ends to their second ends along the same direction.

3. The inductor assembly according to claim 2, characterized in that: The upper end of the first auxiliary winding and the upper end of the second auxiliary winding are exposed on the top surface of the magnetic core, and the lower end of the first auxiliary winding and the lower end of the second auxiliary winding are exposed on the bottom surface of the magnetic core; the first ends of the first main winding, the second main winding, the first auxiliary winding and the second auxiliary winding are all arranged adjacent to the first side surface, and the second ends of the first main winding, the second main winding, the first auxiliary winding and the second auxiliary winding are all arranged adjacent to the third side surface.

4. The inductor assembly according to claim 2, characterized in that: The upper end and the lower end of the first auxiliary winding and the upper end and the lower end of the second auxiliary winding are exposed on the bottom surface of the magnetic core; the first ends of the first main winding, the second main winding, the first auxiliary winding and the second auxiliary winding are arranged adjacent to the first side surface, and the second ends of the first main winding, the second main winding, the first auxiliary winding and the second auxiliary winding are arranged adjacent to the third side surface.

5. The inductor assembly according to claim 1, characterized in that: The first auxiliary winding, the first main winding, the second main winding and the second auxiliary winding are arranged in sequence; the first auxiliary winding is arranged adjacent to the first main winding, and the second auxiliary winding is arranged adjacent to the second main winding; the first main winding and the second main winding both include a main body, a first end and a second end, and the first auxiliary winding and the second auxiliary winding both include a main body, a first end and a second end; the main body of the first auxiliary winding and the main body of the first main winding extend from their respective first ends to the second ends along the same direction, and the main body of the second auxiliary winding and the main body of the second main winding extend from their respective first ends to the second ends along the same direction; the first end of the first auxiliary winding, the first end of the first main winding, the second end of the second main winding and the second end of the second auxiliary winding are all arranged adjacent to the first side, and the second end of the first auxiliary winding, the second end of the first main winding, the first end of the second main winding and the first end of the second auxiliary winding are all arranged adjacent to the third side.

6. The inductor assembly according to claim 1, characterized in that: The first main winding and the second main winding both include a main body, a first end and a second end, and the first auxiliary winding and the second auxiliary winding both include a main body, a first end and a second end; the main bodies of the first main winding and the second main winding are both C-shaped, and the main bodies of the first auxiliary winding and the second auxiliary winding both extend from the respective first ends to the second ends in the same direction; the first end and the second end of the first main winding, the first end and the first end of the first auxiliary winding and the first end of the second auxiliary winding are all arranged adjacent to the first side surface, and the first end and the second end of the second main winding, the second end of the first auxiliary winding and the second end of the second auxiliary winding are all arranged adjacent to the third side surface; the first auxiliary winding is arranged adjacent to the second side surface, and is arranged adjacent to a part of the main body of the first main winding and a part of the main body of the second main winding, and the second auxiliary winding is arranged adjacent to the fourth side surface, and is arranged adjacent to another part of the main body of the first main winding and another part of the main body of the second main winding; the first auxiliary winding is coupled to the first main winding, the first auxiliary winding is coupled to the second main winding, the second auxiliary winding is coupled to the first main winding, and the second auxiliary winding is coupled to the second main winding.

7. The inductor assembly according to any one of claims 3 to 6, characterized in that: The inductor component is formed by pressing a magnetic core material, a first main winding, a second main winding, a first auxiliary winding, and a second auxiliary winding.

8. The inductor assembly according to any one of claims 3 to 6, characterized in that: The magnetic core is formed by assembly.

9. The inductor assembly according to claim 1, characterized in that: The inductor assembly also includes at least one Vin electrical connector and two GND electrical connectors; at least one Vin electrical connector is arranged adjacent to the first side surface and / or the third side surface, and the two GND electrical connectors are arranged on the second side surface and the fourth side surface respectively; the upper ends of the Vin electrical connector and the GND electrical connector are exposed on the top surface of the magnetic core, and the lower ends of the Vin electrical connector and the GND electrical connector are exposed on the bottom surface of the magnetic core.

10. The inductor assembly according to claim 9, characterized in that: At least one of the Vin electrical connectors is disposed adjacent to the first side and between the first main winding and the second main winding.

11. The inductor assembly according to claim 9, characterized in that: At least one of the Vin electrical connectors is disposed adjacent to the third side surface, and the Vin electrical connector includes a first pin, a second pin, and a middle portion, wherein the first pin is disposed on the top surface of the magnetic core, the second pin is disposed on the bottom surface of the magnetic core, and the width of the middle portion is greater than the width of the first pin and the second pin.

12. The inductor assembly according to claim 11, characterized in that: The inductor assembly also includes a signal electrical connector, at least a portion of which is arranged outside a middle portion of the Vin electrical connector; the middle portion is used to shield electromagnetic interference of the first main winding and the second main winding on at least a portion of the signal electrical connector.

13. The inductor assembly according to claim 9, characterized in that: The inductor assembly further includes a signal electrical connector, at least a portion of which is disposed adjacent to the third side surface.

14. The inductor assembly according to claim 13, characterized in that: The signal electrical connector is a pin header.

15. The inductor assembly according to claim 13, characterized in that: The Vin electrical connector, the GND electrical connector or the signal electrical connector is formed by a metallization process.

16. The inductor assembly according to claim 9, characterized in that: The Vin electrical connector or the GND electrical connector is a metal column.

17. The inductor assembly according to claim 12, characterized in that: The second pin of the first main winding and the second pin of the second main winding protrude from the bottom surface of the magnetic core; The first pin and the second pin of the Vin electrical connector are respectively connected to the middle portion via a step structure, and the step structure is used to avoid the signal electrical connector.

18. The inductor assembly according to claim 5, characterized in that: The magnetic core is provided with an air gap; at least a portion of the air gap is located between the first main winding and the second main winding.

19. The inductor assembly according to claim 18, characterized in that: The magnetic core is assembled, and the air gap divides the magnetic core into two halves along the vertical direction; the magnetic core is also provided with a groove, and the groove is used to accommodate the first main winding and the second main winding, and the groove is connected to the air gap.

20. The inductor assembly according to claim 19, characterized in that: The air gap includes a first air gap, which is a horizontal flat through-hole shape, and the first air gap passes through one side of the magnetic core to the other opposite side, and the first air gap extends from the main winding body of the first main winding to the main winding body of the second main winding.

21. The inductor assembly according to claim 9, characterized in that: The second ends of the first auxiliary winding and the second auxiliary winding are bent along the bottom surface toward the middle area of ​​the bottom surface of the magnetic core, and form a second pin in the middle area of ​​the bottom surface.

22. An inductor component, characterized in that: It includes a magnetic core, a first main winding, a second main winding, a Vin electrical connector and a GND electrical connector; The magnetic core comprises an opposite top surface and a bottom surface, an opposite first side surface and a third side surface, and an opposite second side surface and a fourth side surface; The first pin of the first main winding and the first pin of the second main winding are arranged on the top surface of the magnetic core; the second pin of the first main winding and the second pin of the second main winding are arranged on the bottom surface of the magnetic core; the first main winding and the second main winding pass through the magnetic core respectively; The Vin electrical connector is arranged adjacent to the third side surface, and the two GND electrical connectors are respectively arranged on the second side surface and the fourth side surface; the upper ends of the Vin electrical connector and the GND electrical connector are exposed on the top surface of the magnetic core, and the lower ends of the Vin electrical connector and the GND electrical connector are exposed on the bottom surface of the magnetic core; the Vin electrical connector includes a first pin, a second pin and a middle part, the first pin is arranged on the top surface of the magnetic core, the second pin is arranged on the bottom surface of the magnetic core, and the width of the middle part is greater than the width of the first pin and the second pin.

23. The inductor assembly according to claim 22, characterized in that: It also includes a plastic package and a signal electrical connector, the plastic package covers the magnetic core, Vin electrical connector and GND electrical connector, at least a portion of the signal electrical connector is arranged on the outside of the middle part of the Vin electrical connector; the middle part is used to shield the electromagnetic interference of the first main winding and the second main winding to at least a portion of the signal electrical connector.

24. The inductor assembly according to claim 22, characterized in that: The first main winding and the second main winding are I-shaped.

25. The inductor assembly according to claim 22, characterized in that: The first main winding and the second main winding respectively include a first end, a main body and a second end, and the main bodies of the first main winding and the second main winding extend from their respective first ends to the second ends in opposite directions; the first end of the first main winding and the second end of the second main winding are arranged adjacent to the first side, and the second end of the first main winding and the first end of the first main winding are arranged adjacent to the third side.

26. The inductor assembly according to claim 22, characterized in that: The Vin electrical connector and the GND electrical connector are formed by a metallization process.

27. The inductor assembly according to claim 22, characterized in that: The Vin electrical connector and the GND electrical connector are metal pillars.

28. The inductor assembly according to claim 25, characterized in that: The magnetic core is provided with an air gap; at least a portion of the air gap is located between the first main winding and the second main winding.

29. The inductor assembly according to claim 28, characterized in that: The air gap divides the magnetic core into two halves along the vertical direction. The magnetic core is also provided with a groove, which is used to accommodate the first main winding and the second main winding. The groove is connected to the air gap.

30. An integrated power converter module, characterized in that: Including the inductor component as described in claim 13 or 23; the integrated power converter module also includes a top component and a bottom substrate, the top component is arranged on the top surface of the inductor component, and the bottom substrate is arranged on the bottom surface of the inductor component; the first pin of the first main winding, the first pin of the second main winding, the upper end of the Vin electrical connector and the upper end of the GND electrical connector are electrically connected to the top component, and the second pin of the first main winding, the second pin of the second main winding, the lower end of the Vin electrical connector and the lower end of the GND electrical connector are electrically connected to the bottom substrate.

31. The integrated power converter module according to claim 30, characterized in that The signal electrical connector extends from the top of the inductor component through the side of the plastic packaging material to the bottom surface of the bottom substrate.

32. The integrated power converter module according to claim 30, characterized in that The upper end of the signal electrical connector is arranged on the top surface of the inductor component and is electrically connected to the top component; the lower end of the signal electrical connector is arranged on the bottom surface of the inductor component and is electrically connected to the bottom substrate.

33. The integrated power converter module according to claim 30, characterized in that It also includes an output capacitor, which is arranged between the magnetic core and the bottom substrate; one end of the output capacitor, the lower end of the first main winding and the lower end of the second main winding are electrically connected.

34. The integrated power converter module of claim 32, wherein: The first pin and the second pin of the Vin electrical connector are respectively connected to the middle portion of the Vin electrical connector via a step structure, and the step structure is used to avoid the signal electrical connector.

35. The integrated power converter module of claim 32, wherein: The top component includes a top substrate, an input capacitor and two IPM units; the input capacitor and the two IPM units are arranged on the top surface of the top substrate; the IPM unit is electrically connected to the first pin of the Vin electrical connector; the IPM unit is electrically connected to the upper end of the GND electrical connector; the upper end of the first main winding is electrically connected to one of the two IPM units, and the upper end of the second main winding is electrically connected to the other of the two IPM units.

36. An integrated power converter module, characterized in that: It includes an inductor component, a bottom substrate, a plastic packaging material and a signal electrical connector; The inductor component is arranged on the top surface of the bottom substrate; the plastic packaging material covers the inductor component and a part of the top surface of the bottom substrate; The inductor assembly includes a magnetic core, a first main winding, a second main winding, a Vin electrical connector and a GND electrical connector; The upper end of the first main winding, the upper end of the second main winding, the upper end of the Vin electrical connector, and the upper end of the GND electrical connector are respectively exposed from the top surface of the inductor component to the plastic packaging material, and the lower end of the first main winding, the lower end of the second main winding, the lower end of the Vin electrical connector, and the lower end of the GND electrical connector are respectively electrically connected to the bottom substrate; the first main winding and the second main winding pass through the magnetic core respectively; The signal electrical connector extends from the top of the inductor component through the side of the plastic packaging material to the bottom surface of the bottom substrate; the signal electrical connector is formed by a metallization process.

37. The integrated power converter module of claim 36, wherein: The side surface of the plastic encapsulation material is formed by cutting the board, and the signal electrical connector is a plated half-hole component.

38. The integrated power converter module of claim 36, wherein: It also includes a top component, which is arranged adjacent to the top surface of the magnetic core; the top component includes a top substrate, an input capacitor and two IPM units; the input capacitor and the two IPM units are arranged on the top surface of the top substrate; the IPM unit is electrically connected to the upper end of the Vin electrical connector; the IPM unit is electrically connected to the upper end of the GND electrical connector; the upper end of the first main winding is electrically connected to one of the two IPM units, and the upper end of the second main winding is electrically connected to the other of the two IPM units.

39. The integrated power converter module of claim 36, wherein: It also includes an output capacitor, which is arranged between the magnetic core and the bottom substrate; one end of the output capacitor, the lower end of the first main winding and the lower end of the second main winding are electrically connected.

40. The integrated power converter module of claim 39, wherein: It also includes a metal frame, which is used to electrically connect the inductor component to the bottom substrate; the metal frame is arranged between the magnetic core and the bottom substrate; the metal frame is arranged around the output capacitor, and the metal frame is provided with a gap or groove allowing the plastic packaging material to flow in.

41. The integrated power converter module of claim 36, wherein: The magnetic core has a first side surface and a third side surface that are opposite to each other, and the magnetic core also has a second side surface and a fourth side surface that are opposite to each other; the Vin electrical connector is arranged on the first side surface and / or the third side surface, and the GND electrical connector is arranged on the second side surface and / or the fourth side surface.

42. The integrated power converter module of claim 36, wherein: The inductor component also includes a first auxiliary winding and a second auxiliary winding; the first auxiliary winding is positively coupled to the first main winding, and the second auxiliary winding is positively coupled to the second main winding; the first auxiliary winding and the second auxiliary winding are used to form a closed loop of the TLVR inductor technology.

43. The integrated power converter module of claim 36, wherein: The first main winding and the second main winding respectively include a main winding body, a first end of the main winding and a second end of the main winding; the first end of the main winding extends from one end of the main winding body to the top surface of the magnetic core, and the second end of the main winding extends from the other end of the main winding body to the bottom substrate of the magnetic core; the main winding body is horizontally arranged.

44. The integrated power converter module according to claim 43, characterized in that The inductor component also includes a first auxiliary winding and a second auxiliary winding; the first auxiliary winding and the second auxiliary winding respectively include an auxiliary winding body, a first end of the auxiliary winding and a second end of the auxiliary winding; the first end of the main winding extends from one end of the main winding body to the bottom substrate, and the second end of the main winding extends from the other end of the main winding body to the bottom substrate of the magnetic core; the auxiliary winding body and the first main winding are positively coupled, and / or the auxiliary winding body and the second main winding are positively coupled; the first auxiliary winding and the second auxiliary winding are used to form a closed loop of a TLVR inductor technology.

45. The integrated power converter module of claim 43, wherein: A low magnetic permeability material is arranged between the auxiliary winding body and the main winding body.

46. ​​The integrated power converter module of claim 44, wherein: The main winding body includes a first main winding body, a second main winding body and a third main winding body connected in sequence; the first main winding body, the second main winding body and the third main winding body are arranged in a C-shaped horizontal winding; the first main winding and the second main winding are arranged in a second-order rotational symmetric manner; the second main winding body of the first main winding and the second main winding body of the second main winding are anti-coupled; the first main winding and the second main winding are both coupled to the first auxiliary winding, and the first main winding and the second main winding are both coupled to the second auxiliary winding.

47. The integrated power converter module of claim 43, wherein: The distance between the signal electrical connection and the nearest second end of the main winding is smaller than the distance between the signal electrical connection and any first end of the main winding.

48. The integrated power converter module of claim 43, wherein: The inductor component has a second-order rotationally symmetrical structure, and the signal electrical connector is arranged on the inductor component in a second-order rotationally symmetrical manner.

49. An integrated power converter module, characterized in that: It includes an inductor component, a bottom substrate, a plastic packaging material and a signal electrical connector; the signal electrical connector is arranged on the side of the inductor component; The inductor assembly includes a magnetic core, a first main winding, a second main winding, a Vin electrical connector and a GND electrical connector; The upper end of the first main winding, the upper end of the second main winding, the upper end of the Vin electrical connector, and the upper end of the GND electrical connector are respectively exposed from the top surface of the inductor component to the plastic packaging material, and the lower end of the first main winding, the lower end of the second main winding, the lower end of the Vin electrical connector, and the lower end of the GND electrical connector are respectively electrically connected to the bottom substrate; the first main winding and the second main winding pass through the magnetic core respectively; The first main winding and the second main winding respectively include a main winding body, a first end of the main winding and a second end of the main winding; the first end of the main winding extends from one end of the main winding body to the top surface of the magnetic core, and the second end of the main winding extends from the other end of the main winding body to the bottom substrate of the magnetic core; the main winding body is horizontally arranged; The first main winding and the second main winding are arranged in a second-order rotationally symmetrical manner, and the first main winding and the second main winding are anti-coupled.

50. The integrated power converter module of claim 49, wherein: A low magnetic permeability material is arranged between the main winding body of the first main winding and the main winding body of the second main winding.

51. The integrated power converter module of claim 49, wherein: The magnetic core is provided with an air gap; at least a portion of the air gap is located between the first main winding and the second main winding.

52. The integrated power converter module of claim 51, wherein: The air gap divides the magnetic core into two halves along the vertical direction.

53. The integrated power converter module according to claim 52, wherein the magnetic core is further provided with a groove, wherein the groove is used to accommodate the first main winding and the second main winding, and the groove is connected to the air gap.

54. The integrated power converter module of claim 51, wherein: The air gap includes a first air gap, which is a horizontal flat through-hole shape, and the first air gap passes through one side of the magnetic core to the other opposite side, and the first air gap extends from the main winding body of the first main winding to the main winding body of the second main winding.

55. The integrated power converter module of claim 54, wherein: The air gap also includes a second air gap, which is connected to the first air gap, is in the shape of a vertical slot, and extends from the top surface of the magnetic core to the bottom surface of the magnetic core; the second air gap extends from the first main winding or the second main winding to a side surface of the magnetic core.

56. The integrated power converter module of claim 49, wherein: The inductor component also includes a first auxiliary winding and a second auxiliary winding; the first auxiliary winding and the second auxiliary winding respectively include an auxiliary winding body, a first end of the auxiliary winding and a second end of the auxiliary winding; the first end of the main winding extends from one end of the main winding body to the bottom substrate, and the second end of the main winding extends from the other end of the main winding body to the bottom substrate of the magnetic core; the auxiliary winding is coupled to the first main winding, and / or the auxiliary winding is coupled to the second main winding; the first auxiliary winding and the second auxiliary winding are used to form a closed loop of a TLVR inductor technology.

57. The integrated power converter module of claim 56, wherein: A low magnetic permeability material is arranged between the auxiliary winding body and the main winding body.

58. The integrated power converter module of claim 49, wherein: It also includes a top component, which is arranged adjacent to the top surface of the magnetic core; the top component includes a top substrate, an input capacitor and two IPM units; the input capacitor and the two IPM units are arranged on the top surface of the top substrate; the IPM unit is electrically connected to the first pin of the Vin electrical connector; the IPM unit is electrically connected to the upper end of the GND electrical connector; the upper end of the first main winding is electrically connected to one of the two IPM units, and the upper end of the second main winding is electrically connected to the other of the two IPM units; the two IPM units are arranged in a second-order rotationally symmetrical manner.

59. The integrated power converter module of claim 49, wherein: The magnetic core has a first side surface and a third side surface that are opposite to each other, and the magnetic core also has a second side surface and a fourth side surface that are opposite to each other; the Vin electrical connector is arranged on the first side surface and / or the third side surface, and the GND electrical connector is arranged on the second side surface and / or the fourth side surface.

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