Switching power supply module and device

Abstract

The embodiment of the utility model discloses a switching power supply module and device, in one embodiment, the switching power supply module comprises a first start-stop control end, a second start-stop control end, a first voltage tracking end, a second voltage tracking end, a first compensation end and a second compensation end, and the switching power supply module further comprises a first bridging resistor interface point, the first start-stop control end is connected between the first start-stop control end and the second start-stop control end; the second jumper resistor interface point is connected between the first voltage tracking end and the second voltage tracking end; and the third bridging resistor interface point is connected between the first compensation end and the second compensation end. According to the invention, the problem that the design of the switching power supply module or the switching power supply device in the prior art can only carry out parallel output is solved.

Description

Technical Field

[0001] This utility model relates to the field of redundancy design. More specifically, it relates to a switching power supply module and device. Background Technology

[0002] Currently, the parallel design of switching power supplies refers to connecting multiple power modules in parallel to jointly supply power to the load. The main purpose of this design is to increase the total output power of the power system, meet the needs of high-power loads, and at the same time achieve load balancing, thereby improving the reliability and efficiency of the system.

[0003] In existing parallel design systems for switching power supply modules, the start / stop control pins, voltage tracking pins, and compensation pins of the corresponding modules need to be directly connected together. However, this design method cannot achieve redundancy. Utility Model Content

[0004] The purpose of this utility model is to provide a switching power supply module and device to solve the problem that the parallel design system of the existing switching power supply cannot achieve redundancy design.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The first aspect of this utility model provides a switching power supply module, the switching power supply module including a first start / stop control terminal, a second start / stop control terminal, a first voltage tracking terminal, a second voltage tracking terminal, a first compensation terminal, and a second compensation terminal, the switching power supply module further including...

[0007] The first bridging resistor interface point is connected between the first start / stop control terminal and the second start / stop control terminal;

[0008] The second bridging resistor interface point is connected between the first voltage tracking terminal and the second voltage tracking terminal;

[0009] The third bridging resistor interface point is connected between the first compensation terminal and the second compensation terminal.

[0010] Furthermore, bridging resistors are connected to the first bridging resistor interface point, the second bridging resistor interface point, and the third bridging resistor interface point, respectively, so that the first start-stop control terminal is connected to the second start-stop control terminal through the bridging resistor, the first voltage tracking terminal is connected to the second voltage tracking terminal through the bridging resistor, and the first compensation terminal is connected to the second voltage tracking terminal through the bridging resistor.

[0011] Furthermore, a redundant resistor is connected to the third bridging resistor interface point, so that the first bridging resistor interface point disconnects the first start-stop control terminal from the second start-stop control terminal, the second bridging resistor interface point disconnects the first voltage tracking terminal from the second voltage tracking terminal, and the first compensation terminal is connected to the second compensation terminal through the redundant resistor.

[0012] Furthermore, the resistance of the redundant resistor is between 100kΩ and 1000kΩ.

[0013] Furthermore, the switching power supply module also includes a power input terminal and a power diode, wherein the anode of the power diode is connected to an external input power supply, and the cathode is connected to the power input terminal.

[0014] Furthermore, the switching power supply module also includes a mode selection terminal and an internal power supply terminal connected to the mode selection terminal.

[0015] The second aspect of this utility model provides a switching power supply device, comprising:

[0016] The first switching power supply module and the second switching power supply module respectively include a first start-stop control terminal, a second start-stop control terminal, a first voltage tracking terminal, a second voltage tracking terminal, a first compensation terminal and a second compensation terminal. The switching power supply device also includes a fourth bridging resistor interface point, a fifth bridging resistor interface point and a sixth bridging resistor interface point.

[0017] The first start-stop control terminal and the second start-stop control terminal of the first switching power supply module are connected to the first node, the first voltage tracking terminal and the second voltage tracking terminal are connected to the second node, and the first compensation terminal and the second compensation terminal are connected to the third node. The first start-stop control terminal and the second start-stop control terminal of the second switching power supply module are connected to the fourth node, the first voltage tracking terminal and the second voltage tracking terminal are connected to the fifth node, and the first compensation terminal and the second compensation terminal are connected to the sixth node.

[0018] The fourth bridging resistor interface point is connected between the first node and the fourth node;

[0019] The fifth bridging resistor interface point is connected between the second node and the fifth node;

[0020] The sixth bridging resistor interface point is connected between the third node and the sixth node.

[0021] Furthermore, a bridging resistor is connected to the fourth, fifth, and sixth bridging resistor interface points, respectively, so that the first node is connected to the fourth node through the bridging resistor, the second node is connected to the fifth node through the bridging resistor, and the third node is connected to the sixth node through the bridging resistor.

[0022] Furthermore, a redundant resistor is connected to the sixth bridging resistor interface point, so that the fourth bridging resistor interface point disconnects the first node from the fourth node, the fifth bridging resistor interface point disconnects the second node from the fifth node, and the third node is connected to the sixth node through the redundant resistor.

[0023] Furthermore, the resistance of the redundant resistor is between 100kΩ and 1000kΩ.

[0024] The beneficial effects of this utility model are as follows:

[0025] This invention configures multiple bridging resistor interface points in the switching power supply module. Before being put into production, based on the user's requirements for parallel or redundant output, the two output terminals Vout1 and Vout2 of the switching power supply module are controlled to adopt parallel output or redundant output mode by selectively configuring bridging resistors or redundant resistors at each bridging resistor interface point, thus meeting the needs of different users and having high flexibility.

[0026] This invention configures multiple bridging resistor interface points in a switching power supply device. Before being put into production, based on the user's requirements for parallel or redundant output, bridging resistors or redundant resistors are selectively configured at each bridging resistor interface point to control whether the switching power supply modules in the switching power supply device adopt parallel or redundant output, thus meeting the needs of different users and having high flexibility. Attached Figure Description

[0027] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0028] Figure 1 This diagram illustrates a dual-parallel output circuit of a switching power supply module according to an embodiment of the present invention.

[0029] Figure 2 This diagram illustrates a dual-redundant output circuit of a switching power supply module according to an embodiment of the present invention.

[0030] Figure 3 This diagram illustrates a circuit diagram of a switching power supply module connected to a power diode according to an embodiment of the present invention.

[0031] Figure 4This diagram illustrates a dual-parallel output circuit of a switching power supply device according to an embodiment of the present invention.

[0032] Figure 5 This diagram illustrates a dual-redundant output circuit of a switching power supply device according to an embodiment of the present invention. Detailed Implementation

[0033] To more clearly illustrate this utility model, the following description, in conjunction with embodiments and accompanying drawings, further explains the present utility model. Similar components in the drawings are indicated by the same reference numerals. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be construed as limiting the scope of protection of this utility model.

[0034] The design concept of this utility model is as follows: First, existing switching power supply modules generally use LTM4650 chips. However, this chip is an imported chip and is not easy to obtain. The parallel output design system connects the first start-stop control terminal and the second start-stop control terminal of the switching power supply module, connects the first voltage tracking terminal and the second total voltage tracking terminal, and connects the first compensation terminal and the second compensation terminal.

[0035] The first start / stop control terminal RUN1 and the second start / stop control terminal RUN2 are used to control the opening or closing of the corresponding output channels. If the two channels are directly connected, the two channels of the first start / stop control terminal RUN1 and the second start / stop control terminal RUN2 will be turned on or off together, making it impossible for both output terminals of the entire switching power supply module to work properly.

[0036] The first compensation terminal COMP1 and the second compensation terminal COMP2 are compensation pins. When a channel is turned off, the compensation pins are pulled to ground. If all the first compensation terminals COMP1 and the second compensation terminals COMP2 are directly connected together, then when a channel is turned off, the first compensation terminals COMP1 and the second compensation terminals COMP2 of the entire switching power supply module will be pulled low simultaneously, causing both output terminals of the entire switching power supply module to malfunction.

[0037] The first voltage tracking terminal TRACK1 and the second voltage tracking terminal TRACK2 control the output voltage tracking and soft-start. When a channel is turned off, the potential of the corresponding voltage tracking terminal is pulled low. If the first voltage tracking terminal TRACK1 and the second voltage tracking terminal TRACK2 are connected together, turning off the corresponding channel will cause both the first voltage tracking terminal TRACK1 and the second voltage tracking terminal TRACK2 to be pulled low, making both output terminals of the entire switching power supply module unable to function properly.

[0038] It is evident that the above design can only achieve simultaneous parallel data output from both output terminals of the switching power supply module, but it cannot achieve redundant output between the two output terminals. Based on this, the present invention proposes the following technical solution:

[0039] The first embodiment of the present invention provides a switching power supply module, the switching power supply module including a first start / stop control terminal RUN1, a second start / stop control terminal RUN2, a first voltage tracking terminal TRACK1, a second voltage tracking terminal TRACK2, a first compensation terminal COMP1, and a second compensation terminal COMP2, the switching power supply module further including:

[0040] The first bridging resistor interface point is connected between the first start / stop control terminal RUN1 and the second start / stop control terminal RUN2; the first start / stop control terminal RUN1 is connected to the first bridging resistor interface point J1A, and the second start / stop control terminal RUN2 is connected to the first bridging resistor interface point J1B.

[0041] The second bridging resistor interface point is connected between the first voltage tracking terminal TRACK1 and the second voltage tracking terminal TRACK2; the first voltage tracking terminal TRACK1 is connected to the second bridging resistor interface point J2A, and the second voltage tracking terminal TRACK2 is connected to the second bridging resistor interface point J2B.

[0042] The third bridging resistor interface point is connected between the first compensation terminal COMP1 and the second compensation terminal COMP2. The first compensation terminal COMP1 is connected to the third bridging resistor interface point J3A, and the second compensation terminal COMP2 is connected to the third bridging resistor interface point J3B.

[0043] In this embodiment, the switching power supply module further includes a first feedback terminal VFB1 and a second feedback terminal VFB2, wherein the first feedback terminal VFB1 is connected to the second feedback terminal VFB2.

[0044] In this embodiment, the switching power supply module is model ZR4650. This chip is domestically produced, low in cost, and readily available.

[0045] This invention configures multiple bridging resistor interface points in the switching power supply module. Before being put into production, based on the user's requirements for parallel or redundant output, the two output terminals Vout1 and Vout2 of the switching power supply module are controlled to adopt parallel output or redundant output by selectively configuring bridging resistor Rk or redundant resistor Rr at each bridging resistor interface point, thus meeting the needs of different users and having high flexibility.

[0046] In one possible implementation, such as Figure 1As shown, a bridging resistor Rk is connected to the first bridging resistor interface point, the second bridging resistor interface point, and the third bridging resistor interface point, so that the first start / stop control terminal RUN1 is connected to the second start / stop control terminal RUN2 through the bridging resistor Rk, the first voltage tracking terminal TRACK1 is connected to the second voltage tracking terminal TRACK2 through the bridging resistor Rk, and the first compensation terminal COMP1 is connected to the second voltage tracking terminal TRACK2 through the bridging resistor Rk, so as to realize the parallel output of the two output terminals Vout1 and Vout2 of the switching power supply module.

[0047] In one possible implementation, such as Figure 2 As shown, a redundant resistor Rr is connected to the third bridging resistor interface point, so that the first bridging resistor interface point disconnects the first start / stop control terminal RUN1 from the second start / stop control terminal RUN2, the second bridging resistor interface point disconnects the first voltage tracking terminal TRACK1 from the second voltage tracking terminal TRACK2, and the first compensation terminal COMP1 is connected to the second compensation terminal COMP2 through the redundant resistor Rr. This achieves redundant output of the two output terminals Vout1 and Vout2 of the switching power supply module.

[0048] The design concept of this utility model is as follows: In this utility model, when converting parallel connection to redundancy, the bridging resistor between the first compensation terminal COMP1 and the second compensation terminal COMP2 needs to be replaced with a redundant resistor. If one channel malfunctions and is shut down, it will directly pull the potential of the other compensation terminal to ground. Therefore, directly connecting the first and second compensation terminals via a bridging resistor would prevent the dual-ended redundant output function from being realized; hence, it is necessary to replace the bridging resistor with a redundant resistor.

[0049] In this invention, a redundant resistor is connected between the two compensation terminals. This ensures that both compensation terminals can operate normally and maintain current sharing across all channels. If one channel is turned off, it is equivalent to grounding the other channels through the redundant resistor, and therefore they will not be affected.

[0050] In a redundant design, the first start / stop control terminal RUN1 and the second start / stop control terminal RUN2 must be separated; otherwise, shutting down one channel will shut down all channels, making it impossible to achieve a redundant system.

[0051] The design of the voltage tracking terminal is similar to that of the start / stop control terminal, so it will not be elaborated here.

[0052] In one possible implementation, the redundant resistor Rr has a resistance value of 100kΩ to 1000kΩ.

[0053] In this embodiment, the bridging resistor Rk is a resistor with a resistance value close to 0.

[0054] In one possible implementation, such as Figure 3 As shown, the switching power supply module also includes a power input terminal and a power diode D1. The anode of the power diode D1 is connected to an external input power supply, and the cathode is connected to the power input terminal Vin.

[0055] In one possible implementation, the switching power supply module further includes a mode selection terminal and an internal power supply terminal connected to the mode selection terminal.

[0056] In one specific embodiment, to achieve redundancy and prevent current backflow, it is essential to ensure that the input voltage of any input in the redundant design is higher than the output voltage; otherwise, current backflow may occur. Therefore, in this invention, the mode selection terminal MODE_PLLIN of the switching power supply module is connected to the internal power supply terminal INTVCC. This ensures that both channels of the switching power supply module operate in DCM mode, preventing current backflow.

[0057] A second embodiment of the present invention provides a switching power supply device, comprising:

[0058] The first switching power supply module and the second switching power supply module respectively include a first start / stop control terminal RUN1, a second start / stop control terminal RUN2, a first voltage tracking terminal TRACK1, a second voltage tracking terminal TRACK2, a first compensation terminal COMP1 and a second compensation terminal COMP2. The switching power supply device also includes a fourth bridging resistor Rk interface point, a fifth bridging resistor Rk interface point and a sixth bridging resistor Rk interface point.

[0059] The first start / stop control terminal RUN1 and the second start / stop control terminal RUN2 of the first switching power supply module are connected to the first node P1, the first voltage tracking terminal TRACK1 and the second voltage tracking terminal TRACK2 are connected to the second node P2, and the first compensation terminal COMP1 and the second compensation terminal COMP2 are connected to the third node P3. The first start / stop control terminal RUN1 and the second start / stop control terminal RUN2 of the second switching power supply module are connected to the fourth node P4, the first voltage tracking terminal TRACK1 and the second voltage tracking terminal TRACK2 are connected to the fifth node P5, and the first compensation terminal COMP1 and the second compensation terminal COMP2 are connected to the sixth node P6.

[0060] The fourth bridging resistor interface point is connected between the first node P1 and the fourth node P4; more specifically, the first node P1 is connected to the J4A terminal of the fourth bridging resistor interface point, and the fourth node P4 is connected to the J4B terminal of the fourth bridging resistor interface point.

[0061] The fifth bridging resistor interface point is connected between the second node P2 and the fifth node P5; more specifically, the second node P2 is connected to the J5A terminal of the fifth bridging resistor interface point, and the fifth node P5 is connected to the J5B terminal of the fourth bridging resistor interface point.

[0062] The sixth bridging resistor interface point is connected between the third node P3 and the sixth node P6; more specifically, the third node P3 is connected to the J6A terminal of the fifth bridging resistor interface point, and the sixth node P6 is connected to the J6B terminal of the sixth bridging resistor interface point.

[0063] In one possible implementation, such as Figure 4 As shown, the fourth, fifth, and sixth bridging resistor interfaces are respectively connected to bridging resistors Rk, so that the first node P1 is connected to the fourth node P4 through bridging resistor Rk, the second node P2 is connected to the fifth node P5 through bridging resistor Rk, and the third node P3 is connected to the sixth node P6 through bridging resistor Rk, thereby realizing parallel output between the two switching power supply modules.

[0064] In one possible implementation, such as Figure 5 As shown, a redundant resistor Rr is connected to the sixth bridging resistor interface point, so that the fourth bridging resistor interface point disconnects the first node P1 from the fourth node P4, the fifth bridging resistor interface point disconnects the second node P2 from the fifth node P5, and the third node P3 is connected to the sixth node P6 through the redundant resistor Rr. This achieves redundant output between the two switching power supply modules.

[0065] In one possible implementation, the redundant resistor Rr has a resistance value of 100kΩ to 1000kΩ.

[0066] This invention configures multiple bridging resistor interface points in a switching power supply device. Before being put into production, based on the user's requirements for parallel or redundant output, the bridging resistor Rk or redundant resistor Rr is selectively configured at each bridging resistor interface point to control whether the switching power supply modules in the switching power supply device adopt parallel or redundant output, thus meeting the needs of different users and having high flexibility.

[0067] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0068] It should also be noted that in the description of this utility model, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0069] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A switching power supply module, characterized in that, The switching power supply module includes a first start / stop control terminal, a second start / stop control terminal, a first voltage tracking terminal, a second voltage tracking terminal, a first compensation terminal, and a second compensation terminal. The switching power supply module also includes... The first bridging resistor interface point is connected between the first start / stop control terminal and the second start / stop control terminal; The second bridging resistor interface point is connected between the first voltage tracking terminal and the second voltage tracking terminal; The third bridging resistor interface point is connected between the first compensation terminal and the second compensation terminal.

2. The switching power supply module according to claim 1, characterized in that, A bridging resistor is connected to the first bridging resistor interface point, the second bridging resistor interface point, and the third bridging resistor interface point, so that the first start-stop control terminal is connected to the second start-stop control terminal through the bridging resistor, the first voltage tracking terminal is connected to the second voltage tracking terminal through the bridging resistor, and the first compensation terminal is connected to the second voltage tracking terminal through the bridging resistor.

3. The switching power supply module according to claim 1, characterized in that, The third bridging resistor interface point is connected to a redundant resistor so that the first bridging resistor interface point disconnects the first start / stop control terminal from the second start / stop control terminal, the second bridging resistor interface point disconnects the first voltage tracking terminal from the second voltage tracking terminal, and the first compensation terminal is connected to the second compensation terminal through the redundant resistor.

4. The switching power supply module according to claim 3, characterized in that, The resistance of the redundant resistor is between 100kΩ and 1000kΩ.

5. The switching power supply module according to any one of claims 2-4, characterized in that, The switching power supply module also includes a power input terminal and a power diode. The anode of the power diode is connected to an external input power supply, and the cathode is connected to the power input terminal.

6. The switching power supply module according to any one of claims 2-4, characterized in that, The switching power supply module also includes a mode selection terminal and an internal power supply terminal connected to the mode selection terminal.

7. A switching power supply device, characterized in that, include: The first switching power supply module and the second switching power supply module respectively include a first start-stop control terminal, a second start-stop control terminal, a first voltage tracking terminal, a second voltage tracking terminal, a first compensation terminal and a second compensation terminal. The switching power supply device also includes a fourth bridging resistor interface point, a fifth bridging resistor interface point and a sixth bridging resistor interface point. The first start-stop control terminal and the second start-stop control terminal of the first switching power supply module are connected to the first node, the first voltage tracking terminal and the second voltage tracking terminal are connected to the second node, and the first compensation terminal and the second compensation terminal are connected to the third node. The first start-stop control terminal and the second start-stop control terminal of the second switching power supply module are connected to the fourth node, the first voltage tracking terminal and the second voltage tracking terminal are connected to the fifth node, and the first compensation terminal and the second compensation terminal are connected to the sixth node. The fourth bridging resistor interface point is connected between the first node and the fourth node; The fifth bridging resistor interface point is connected between the second node and the fifth node; The sixth bridging resistor interface point is connected between the third node and the sixth node.

8. The switching power supply device according to claim 7, characterized in that, A bridging resistor is connected to the fourth, fifth, and sixth bridging resistor interface points, respectively, so that the first node is connected to the fourth node through the bridging resistor, the second node is connected to the fifth node through the bridging resistor, and the third node is connected to the sixth node through the bridging resistor.

9. The switching power supply device according to claim 7, characterized in that, The sixth bridging resistor interface point is connected to a redundant resistor, so that the fourth bridging resistor interface point disconnects the first node from the fourth node, the fifth bridging resistor interface point disconnects the second node from the fifth node, and the third node is connected to the sixth node through the redundant resistor.

10. The switching power supply device according to claim 9, characterized in that, The resistance of the redundant resistor is between 100kΩ and 1000kΩ.

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