Inductor module of a trans- inductive voltage regulator and its external structure

Abstract

This utility model relates to an inductor module for a trans-inductor voltage regulator and an external structure for the inductor module of the trans-inductor voltage regulator. The inductor module of the trans-inductor voltage regulator includes a soft magnetic core block. A first inductor copper sheet and a second copper sheet are vertically arranged within the soft magnetic core block. Both ends of the first inductor copper sheet protrude from the soft magnetic core block. Both ends of the second inductor copper sheet protrude from the soft magnetic core block and form a coupled inductance with a first winding. A third inductor copper sheet and a fourth copper sheet are also vertically arranged within the soft magnetic core block. Both ends of the third inductor copper sheet protrude from the soft magnetic core block. The soft magnetic core block has two ends of the fourth inductor copper sheet extending out of the soft magnetic core block and forming a coupled inductance with the third winding. The soft magnetic core block has at least seven power copper sheets and several signal conduction copper sheets on its side. Each power copper sheet is used to connect the first and third inductor copper sheets to the input voltage network, to connect the first inductor copper sheet to an external circuit, to connect the second and fourth inductor copper sheets, to connect the third inductor copper sheet to an external circuit, and to connect the first and third inductor copper sheets to the grounding network.

Description

Technical Field

[0001] This utility model relates to the field of electronic technology, specifically to an inductor module for a trans-inductor voltage regulator and an external structure for the inductor module of the trans-inductor voltage regulator. Background Technology

[0002] The voltage regulator module (VRM), especially for the inductor design of transinductor voltage regulators (TLVRs), mainly simplifies the manufacturing process of TLVR modules by enabling signal and power transmission through a single inductor.

[0003] The inductor module disclosed in Publication No. CN 120854134A, which discloses a transinductor voltage regulator (TLVR) inductor module and a power electronic assembly including the TLVR inductor module, includes a magnetic core with multiple sets of windings embedded internally: a first winding and a second winding (inductively coupled), a third winding and a fourth winding (inductively coupled). The second and fourth windings are connected in series using an integrated metal connector to form a loop, eliminating the need for an external PCB. The terminals of the primary windings (first and third windings) are exposed on one side of the module for connection to the power stage module. The secondary windings are internally connected in series via the integrated metal connector.

[0004] This patented solution places the MOSFET chip under the inductor. On the one hand, the pin height of the inductor needs to be customized for the MOSFET chip. Due to tolerances, there may be a gap between the inductor and the MOSFET chip, affecting the heat dissipation of the MOSFET chip. On the other hand, for TLVR modules, a PCB needs to accommodate the 6 pins of the inductor module across the inductor voltage regulator, the input and output capacitors, and the peripheral circuitry of the MOSFET chip. The number of input and output capacitors will inevitably need to be reduced, and efficiency will also be affected. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an inductor module for a trans-inductor voltage regulator with a simple structure and good thermal stability.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: an inductor module for an inductor voltage regulator, comprising a soft magnetic core block, in which a first inductor copper sheet and a second inductor copper sheet, which are mutually insulated, are vertically arranged; both ends of the first inductor copper sheet protrude from the soft magnetic core block; both ends of the second inductor copper sheet protrude from the soft magnetic core block and form a coupled inductance with the first inductor copper sheet; a third inductor copper sheet and a fourth inductor copper sheet, which are mutually insulated, are also vertically arranged in the soft magnetic core block; both ends of the third inductor copper sheet protrude from the soft magnetic core block; both ends of the fourth inductor copper sheet protrude from the soft magnetic core block and form a coupled inductance with the third inductor copper sheet.

[0007] The soft magnetic core block has at least seven power copper plates and several signal conduction copper plates on its side. The first power copper plate and the second power copper plate are used to connect the first inductor copper plate and the third inductor copper plate to the input voltage network, respectively. The third power copper plate is used to connect the second inductor copper plate to the external circuit. The fourth power copper plate is used to connect the second inductor copper plate and the fourth inductor copper plate. The fifth power copper plate is used to connect the fourth inductor copper plate to the external circuit. The sixth power copper plate and the seventh power copper plate are used to connect the first inductor copper plate and the third inductor copper plate to the grounding network, respectively.

[0008] As a preferred embodiment, it also includes an eighth power copper sheet and a ninth power copper sheet, which are used to connect external electrical components to the grounding network.

[0009] As a preferred embodiment, the number of signal transmission copper plates is nine; the nine signal transmission copper plates are respectively used to transmit the first and second TSEN signals, the first and second ISEN signals, the first and second EN signals, the first and second PWM signals, and the VCC signal.

[0010] As a preferred embodiment, each of the power copper sheets is C-shaped and is secured to the side of the soft magnetic core; each of the signal conduction copper sheets is C-shaped and is secured to the side of the soft magnetic core.

[0011] As a preferred embodiment, the first to fourth inductor copper sheets are straight copper sheets, L-shaped copper sheets, or copper sheets with two right-angle bends.

[0012] As a preferred embodiment, epoxy resin is used to fill the spaces between the first and second inductor copper sheets and between the third and fourth inductor copper sheets for insulation.

[0013] Another technical problem to be solved by this utility model is to provide an external structure for the inductor module of the trans-inductor voltage regulator.

[0014] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: the external structure of the inductor module of the trans-inductor voltage regulator includes an upper PCB board disposed on the upper part of the inductor module of the trans-inductor voltage regulator and a lower PCB board disposed on the lower part of the inductor module of the trans-inductor voltage regulator. The upper PCB board is provided with traces that connect the first power copper sheet, the second power copper sheet and the third power copper sheet respectively. The lower PCB board is provided with traces that connect the fifth power copper sheet and traces that connect the fourth power copper sheet and the second inductor copper sheet.

[0015] As a preferred embodiment, a first control switch is connected between the ends of the first power copper sheet and the first inductor copper sheet on the upper PCB board; a second control switch is connected between the ends of the second power copper sheet and the third inductor copper sheet on the upper PCB board.

[0016] A third control switch is connected to the end of the sixth power copper sheet and the first inductor copper sheet via traces on the upper PCB board; a fourth control switch is connected to the end of the seventh power copper sheet and the third inductor copper sheet via traces on the upper PCB board.

[0017] The beneficial effects of this utility model are:

[0018] The inductor structure proposed in this invention innovatively integrates the inductance, power, and signal of the Trans-Inductor Voltage Regulator (TLVR) module onto a single inductor module, significantly reducing the difficulty of manufacturing. Furthermore, the sandwich structure ensures that the Drmos field-effect transistor chip can directly contact the heatsink on the upper board, reducing thermal resistance and improving the module's thermal stability.

[0019] It also includes an eighth power copper plate and a ninth power copper plate, which are used to connect external electrical components to the grounding network, making it convenient for external electrical components to be connected.

[0020] Since each of the power copper sheets is C-shaped and secured to the side of the soft magnetic core, and each of the signal conduction copper sheets is C-shaped and secured to the side of the soft magnetic core, the positioning and installation of the power copper sheets and signal conduction copper sheets are more convenient, and the external electrical connection of the power copper sheets and signal conduction copper sheets is more reliable. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the inductor module structure of a trans-inductor voltage regulator.

[0022] Figure 2 This is a schematic diagram of the inductor module of the trans-inductor voltage regulator from another angle.

[0023] Figure 3 This is a perspective view of the magnetic core of an inductor module for a trans-inductor voltage regulator.

[0024] Figure 4 This is a perspective view of the magnetic core of an inductor module for another type of trans-inductor voltage regulator.

[0025] Figure 5 This is a diagram showing the external topology of the inductor module of the trans-inductor voltage regulator. Detailed Implementation

[0026] The specific implementation scheme of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] like Figure 1-3 As shown, an inductor module for an inductor voltage regulator includes a soft magnetic core block D. A first inductor copper sheet A2-1 and a second inductor copper sheet A1-1, which are insulated from each other, are vertically arranged within the soft magnetic core block D. Both ends of the first inductor copper sheet A2-1 extend through the soft magnetic core block to form a first winding. Both ends of the second inductor copper sheet A1-1 extend through the soft magnetic core block to form a second winding and are coupled with the first inductor copper sheet A2-1. A third inductor copper sheet A2-2 and a fourth inductor copper sheet A1-2, which are also insulated from each other, are also vertically arranged within the soft magnetic core block. Both ends of the third inductor copper sheet A2-2 extend through the soft magnetic core block to form a third winding. Both ends of the fourth inductor copper sheet A1-2 extend through the soft magnetic core block to form a fourth winding and are coupled with the third inductor copper sheet A2-2. The first to fourth inductor copper sheets are straight plate-shaped copper sheets. Epoxy resin is used to fill the spaces between the first inductor copper sheet A2-1 and the second inductor copper sheet A1-1, as well as between the third inductor copper sheet A2-2 and the fourth copper sheet A1-2, for insulation.

[0028] The soft magnetic core has nine power copper plates C and several signal conduction copper plates B on its side. The first power copper plate 10 and the second power copper plate 18 are used to connect the first inductor copper plate A2-1 and the third inductor copper plate A2-2 to the input voltage network, respectively. The third power copper plate 17 is used to electrically connect the second inductor copper plate A1-1 to the external circuit. The fourth power copper plate 14 is used to connect the second inductor copper plate A1-1 and the fourth inductor copper plate A1-2. The fifth power copper plate 11 is used to electrically connect the fourth inductor copper plate A1-2 to the external circuit. The sixth power copper plate 12 and the seventh power copper plate 15 are used to connect the first inductor copper plate A2-1 and the third inductor copper plate A2-2 to the grounding network, respectively.

[0029] The eighth power copper sheet 13 and the ninth power copper sheet 16 are used to connect external electrical components to the grounding network; each of the power copper sheets is C-shaped and is snapped onto the side of the soft magnetic core block.

[0030] The number of signal conducting copper sheets is nine; the nine signal conducting copper sheets are used to conduct the first and second TSEN signals, the first and second ISEN signals, the first and second EN signals, the first and second PWM signals, and the VCC signal, respectively; each of the signal conducting copper sheets is C-shaped and is clamped to the side of the soft magnetic core block.

[0031] Example 2 Figure 4 As shown, the difference between this and Embodiment 1 is that the first to fourth inductor copper sheets are copper sheets with two right-angle bends.

[0032] like Figure 5As shown, an external structure for an inductor module of a trans-inductor voltage regulator includes an upper PCB board disposed on the upper part of the inductor module of the trans-inductor voltage regulator and a lower PCB board disposed on the lower part of the inductor module of the trans-inductor voltage regulator. The upper PCB board is provided with traces connecting the first power copper sheet 10, the second power copper sheet 18, and the third power copper sheet 17 respectively. The lower PCB board is provided with traces connecting the fifth power copper sheet 11 and the fourth power copper sheet 14 and the second inductor copper sheet A1-1.

[0033] A first control switch is connected on the upper PCB board between the first power copper sheet 10 and the end 21 of the first inductor copper sheet A2-1; a second control switch is connected on the upper PCB board between the second power copper sheet 18 and the end 22 of the third inductor copper sheet A2-2.

[0034] A third control switch is connected to the upper PCB board via a trace between the sixth power copper sheet 12 and the end 21 of the first inductor copper sheet A2-1; a fourth control switch is connected to the upper PCB board via a trace between the seventh power copper sheet 15 and the end 22 of the third inductor copper sheet A2-2.

[0035] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the protection scope of the present invention.

Claims

1. An inductor module for a trans-inductor voltage regulator, comprising a soft magnetic core block, characterized in that: The soft magnetic core block contains vertically arranged, mutually insulated first and second inductor copper sheets (A2-1 and A1-1). Both ends of the first inductor copper sheet (A2-1) extend out of the soft magnetic core block, and both ends of the second inductor copper sheet (A1-1) extend out of the soft magnetic core block and form a coupled inductance with the first inductor copper sheet (A2-1). The soft magnetic core block also contains vertically arranged, mutually insulated third and fourth inductor copper sheets (A2-2 and A1-2). Both ends of the third inductor copper sheet (A2-2) extend out of the soft magnetic core block, and both ends of the fourth inductor copper sheet (A1-2) extend out of the soft magnetic core block and form a coupled inductance with the third inductor copper sheet (A2-2). The soft magnetic core block has at least seven power copper plates and several signal conduction copper plates on its side. The first power copper plate (10) and the second power copper plate (18) are used to connect the first inductor copper plate (A2-1) and the third inductor copper plate (A2-2) to the input voltage network, respectively. The third power copper plate (17) is used to connect the second inductor copper plate (A1-1) to the external circuit. The fourth power copper plate (14) is used to connect the second inductor copper plate (A1-1) and the fourth inductor copper plate (A1-2). The fifth power copper plate (11) is used to connect the fourth inductor copper plate (A1-2) to the external circuit. The sixth power copper plate (12) and the seventh power copper plate (15) are used to connect the first inductor copper plate (A2-1) and the third inductor copper plate (A2-2) to the grounding network, respectively.

2. The inductor module of the trans-inductor voltage regulator as described in claim 1, characterized in that: It also includes an eighth power copper plate (13) and a ninth power copper plate (16), which are used to connect external electrical components to the grounding network.

3. The inductor module of the trans-inductor voltage regulator as described in claim 1, characterized in that: The number of signal transmission copper plates is nine; the nine signal transmission copper plates are respectively used to transmit the first and second TSEN signals, the first and second ISEN signals, the first and second EN signals, the first and second PWM signals, and the VCC signal.

4. The inductor module of the trans-inductor voltage regulator as described in claim 1, characterized in that: Each of the power copper sheets is C-shaped and is secured to the side of the soft magnetic core; each of the signal conduction copper sheets is C-shaped and is secured to the side of the soft magnetic core.

5. The inductor module of a trans-inductor voltage regulator as described in claim 1, characterized in that: The first to fourth inductor copper sheets are straight copper sheets, L-shaped copper sheets, or copper sheets with two right-angle bends.

6. The inductor module of the trans-inductor voltage regulator as described in claim 1, characterized in that: Epoxy resin is used to fill the spaces between the first inductor copper sheet (A2-1) and the second inductor copper sheet (A1-1), as well as between the third inductor copper sheet (A2-2) and the fourth inductor copper sheet (A1-2), for insulation.

7. The external connection structure of the inductor module of the trans-inductor voltage regulator as described in any one of claims 1-6, characterized in that: The system includes an upper PCB board disposed on the upper part of the inductor module of the trans-inductor voltage regulator and a lower PCB board disposed on the lower part of the inductor module of the trans-inductor voltage regulator. The upper PCB board is provided with traces connecting the first power copper sheet (10), the second power copper sheet (18), and the third power copper sheet (17), respectively. The lower PCB board is provided with traces connecting the fifth power copper sheet (11) and traces connecting the fourth power copper sheet (14) and the second inductor copper sheet (A1-1).

8. The external connection structure of the inductor module of the trans-inductor voltage regulator as described in claim 7, characterized in that: A first control switch is connected between the end (21) of the first power copper sheet (10) and the end (21) of the first inductor copper sheet (A2-1) on the upper PCB board; a second control switch is connected between the end (22) of the second power copper sheet (18) and the end (22) of the third inductor copper sheet (A2-2) on the upper PCB board; A third control switch is connected by a trace between the end (21) of the sixth power copper sheet (12) and the first inductor copper sheet (A2-1) on the upper PCB board; a fourth control switch is connected by a trace between the end (22) of the seventh power copper sheet (15) and the third inductor copper sheet (A2-2) on the upper PCB board.

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