Power supply control circuit and device

Abstract

The utility model belongs to the field of semiconductor equipment power supply control, and provides a power supply control circuit and device, the power supply control circuit comprises a power supply input end electrically connected with a power supply circuit and at least one power supply output end electrically connected with a power utilization circuit, and the power supply input end is electrically connected with the at least one power supply output end. The power supply input end is provided with a power supply anode pin, a power supply cathode pin and a power supply grounding pin, the power supply output end is provided with an output anode pin, an output cathode pin and an output grounding pin, the power supply anode pin is connected with the output anode pin, the power supply cathode pin is connected with the output cathode pin, and the power supply grounding pin is connected with the output grounding pin. The power supply positive electrode pin and the power supply negative electrode pin comprise pins which are connected in parallel. The number of wiring cables is reduced and the total length of a wiring circuit is reduced through wiring of similar line concentration and a positive and negative voltage power supply mode, and bearable current is increased through a pin parallel connection mode so as to change the maximum output current value.

Description

Technical Field

[0001] The utility model relates to the field of power supply control for semiconductor devices, and particularly to a power supply control circuit and device. Background Art

[0002] With the miniaturization and high-density development of modern electronic products, printed circuit boards and semiconductor devices are usually required to be designed in small sizes. In the existing power supply control devices for small-sized semiconductor devices, the power supply current from the power supply device is usually transmitted to the electrical device by means of Figure 1 terminal block shunting. The input end of the terminal block connected to the power supply device is usually set as a single pin. According to the pin characteristics, the maximum current value I 入max that the power supply input end can carry is 16A. The terminal block distributes and limits the current I 入max transmitted from the power supply input end, and the output end of the terminal block transmits the distributed current to the connected electrical device.

[0003] In the market, the output current of the power supply control device for semiconductor devices is often limited to 2A. However, the rated current of some electronic devices in the electrical devices of semiconductor devices is greater than 2A. The current output by the aforementioned power supply control device cannot meet the working requirements of these electronic devices, and these electronic devices cannot work properly. Therefore, it is necessary to provide a new power supply control circuit and device to solve the above problems existing in the prior art. Summary of the Utility Model

[0004] In order to solve the problem that the current output by the power supply control device applied to semiconductor devices in the prior art is difficult to meet the working requirements of some electronic devices in the electrical device, the present application provides a power supply control circuit and device.

[0005] The power supply control circuit and device provided by the present application adopt the following technical solutions:

[0006] The power supply control circuit includes a power supply input end electrically connected to the power supply circuit and at least one power supply output end electrically connected to the electrical circuit. The power supply input end is electrically connected to at least one of the power supply output ends. The power supply input end has a power supply positive pin, a power supply negative pin, and a power supply ground pin. The power supply output end has an output positive pin, an output negative pin, and an output ground pin. The power supply positive pin is connected to the output positive pin, the power supply negative pin is connected to the output negative pin, and the power supply ground pin is connected to the output ground pin. The power supply positive pin and the power supply negative pin include a plurality of pins connected in parallel with each other.

[0007] By adopting the above technical solution, the power input end of the power supply control circuit can be freely connected to the power supply circuit, that is, it can be directly connected to the power supply equipment in the power supply circuit, or it can be connected to any point in the power supply circuit (indirectly connected to the power supply equipment). Similarly, the power output end of the power supply control circuit can also be freely connected to the power consumption circuit, and can be directly connected to the power consumption device in the power consumption circuit, or it can be connected to any point in the power consumption circuit (indirectly connected to the power consumption device). Compared with the prior art that must be directly connected to the power supply equipment through the terminal block, this solution has a higher degree of freedom. It adopts a line-like method for power supply control, and no longer needs to be connected to the power consumption circuit after diversion through the terminal block to supply power to the electronic device, reducing the number of cables in the wiring line and reducing the total length of the wiring line. In addition, this solution receives a pair of equal positive and negative voltages through the power supply positive pin and the power supply negative pin, and transmits equal positive and negative voltages of one large and one small to the power consumption circuit through the output positive pin and the output negative pin, reducing the burden of circuit routing layout.

[0008] Since the maximum current carrying capacity of a single connecting wire is fixed, the positive power supply pin in this case is constructed by connecting multiple pins in parallel. The maximum current carrying capacity of the entire positive power supply pin is the sum of the single connecting wires connecting all the pins. That is, if the maximum current carrying capacity of a single connecting wire is imax, and the positive power supply pin is constructed by connecting k pins in parallel, the maximum current carrying capacity of the entire positive power supply pin is k*imax. Therefore, the use of multiple pins in parallel for the positive power supply pin increases the maximum current carrying capacity of the entire positive power supply pin. Similarly, the use of multiple pins in parallel for the negative power supply pin also increases the maximum current carrying capacity of the entire negative power supply pin. As the maximum current carrying capacity of the positive and negative power supply pins increases, the maximum current that the entire power supply input terminal can handle will also increase. Therefore, the power supply input terminal in the power supply control circuit in this case can handle a higher power supply current. The power supply control circuit in this case does not limit the output current of the power supply output terminal. The power supply output terminal in this case can also transmit a higher output current to meet the rated current of the electronic components in the power-consuming device of the power-consuming circuit.

[0009] Optionally, the positive power supply pin includes a first power supply pin and a fourth power supply pin connected in parallel, the negative power supply pin includes a second power supply pin and a third power supply pin connected in parallel, the positive output pin includes a first output pin and a fourth output pin connected in parallel, and the negative output pin includes a second output pin and a third output pin connected in parallel.

[0010] By adopting the above technical solution, the power supply positive electrode uses two pins connected in parallel with each other, and the power supply negative electrode also uses two pins connected in parallel with each other. Considering that the current-carrying capacity of the connecting wire between the pins is fixed, in this case, the current that the power supply input end in the power supply control circuit can withstand is increased by connecting the two pins in parallel, thereby increasing the maximum output current value output by the power supply output end.

[0011] Optionally, after the first power supply pin and the fourth power supply pin are connected in parallel, they are connected to the power supply positive bus, and each output positive pin is connected to the power supply positive bus; after the second power supply pin and the third power supply pin are connected in parallel, they are connected to the power supply negative bus, and each output negative pin is connected to the power supply negative bus, and the power supply ground pin is connected to the power supply ground bus, and each output ground pin is connected to the power supply ground bus.

[0012] By adopting the above technical solution, all output positive pins are connected to the first power supply pin and the fourth power supply pin connected in parallel through the power supply positive bus, and all output negative pins are connected to the second power supply pin and the third power supply pin connected in parallel through the power supply negative bus, realizing bus-type wiring, ensuring clear wiring and reducing the space occupied by the wiring.

[0013] Optionally, the first output pin and the fourth output pin are both connected to the power supply positive bus, and the second output pin and the fourth output pin are both connected to the power supply negative bus.

[0014] Optionally, the power supply control circuit further includes a protection resistor and a light-emitting component. The first end of the protection resistor is connected to the power supply positive pin, the second end of the protection resistor is connected to the first end of the light-emitting component, and the second end of the light-emitting component is connected to the power supply negative pin.

[0015] By adopting the above technical solution, the voltage difference between the power supply positive pin and the power supply negative pin is ensured through the protection resistor, and the light-emitting component can display the working condition of this circuit. When it is lit, it means that this circuit can work normally, and when it is turned off, it means that there is no power supply input to this circuit.

[0016] Optionally, the light-emitting component is a light-emitting diode. The positive electrode of the light-emitting diode is connected to the second end of the protection resistor, and the negative electrode of the light-emitting diode is connected to the power supply negative pin.

[0017] By adopting the above technical solution, the positive electrode of the light-emitting diode is connected to the power supply positive pin through the protection resistor, and the negative electrode is connected to the power supply negative pin. The directionality of the light-emitting diode is used to prevent current from leaking from the power supply positive pin to the power supply negative pin.

[0018] Optionally, the current-carrying capacity of a single connecting wire between the power supply positive pin and the output positive pin is less than or equal to 12A.

[0019] By adopting the above technical solution, since the positive power supply pin and the negative power supply pin both include multiple pins connected in parallel, the maximum current carrying capacity of the single connecting wire connected to each pin reaches 12A, the maximum current value that the positive power supply pin can transmit is N times of 12A (N is the number of connecting wires connected in parallel in the positive power supply pin), and the maximum current value that the negative power supply pin can transmit is M times of 12A (M is the number of connecting wires connected in parallel in the negative power supply pin). The power supply input end is composed of the positive power supply pin, the negative power supply pin and the ground power supply pin. The positive power supply pin and the negative power supply pin cooperate with each other, and the maximum current value that the power supply input end as a whole can transmit is K times of 12A (K is the minimum value between M and N). In this case, by limiting the current carrying capacity of the connecting wire and using the method of connecting the pins in parallel, the maximum current that can be carried by the power supply input end is increased, ensuring that this circuit can adapt to large current power supply circuits and current power circuits.

[0020] The present utility model also provides a power supply control device, including a PCB board, a power supply interface, and an output interface. The PCB board is burned with any of the above-mentioned power supply control circuits, the power supply interface is connected to the power supply input terminal via hole, and the output interface is connected to the power supply output terminal via hole.

[0021] By adopting the above technical solution, the power supply control circuit burned into the PCB board in the power supply control device performs power supply control in a similar manner to a wire collection method. The power supply input end is connected to the power supply circuit through the power supply interface, and the power supply output end is connected to the power consumption circuit through the output interface. Compared with terminal block shunt, it is no longer constrained by the shunt position, reducing the number of cables in the wiring line and the total length of the wiring line. In addition, the power supply input end and the power supply output end both use a pair of equal positive and negative voltages for power supply and transmission, reducing the burden of circuit routing layout. The via-hole connection method between the power supply interface and the power supply input end, and the via-hole connection method between the output interface and the power supply output end, reduce the wiring length compared to detouring from the edge of the PCB board.

[0022] Optionally, the PCB board is a double-sided routing PCB board, and the copper thickness of all single connecting wires in the PCB board is 2 ounces and the width is 2.5 mm.

[0023] By adopting the above technical solution and limiting the copper thickness and wiring width, it is ensured that the maximum current that can be carried by the two parallel connecting wires can meet the working requirements of the electronic devices in the power circuit; and the PCB board adopts double-sided routing, which reduces the complexity of wiring.

[0024] Optionally, the PCB board is a single-sided wiring PCB board, and the copper thickness of all single connecting wires in the PCB board is 2 ounces and the width is 5 mm.

[0025] By adopting the above technical solution, through the limitation of the copper thickness and the wiring width, it is ensured that the maximum current that a single connecting wire can carry can meet the working requirements of the electronic devices in the power-consuming circuit.

[0026] Optionally, both the power supply interface and the output interface include a base, a screw and a housing. The base is welded to the PCB board. The bottom of the screw has an external thread that matches the internal thread in the base, and the top of the screw is connected to the housing.

[0027] By adopting the above technical solution, the base is welded to the PCB board. By rotating the screw to adjust the distance between the housing and the base, the exposed height of the power supply interface and the output interface can be adjusted, so as to adapt to transmission lines of different widths.

[0028] Optionally, the PCB board is provided with a first via hole and a second via hole. The first via hole is located at the edge of the PCB board and at a point corresponding to a connection line between the power supply pin and the output pin. The second via hole is located at the position of the PCB board corresponding to the power supply pin and at the position of the PCB board corresponding to the output pin. The power supply pins include the power supply positive pin, the power supply negative pin and the power supply ground pin. The output pins include the output positive pin, the output negative pin and the output ground pin.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. The power supply input end is connected to the power supply circuit, and the power supply output end is connected to the power-consuming circuit. Compared with only being able to shunt at the terminal block and directly using a connecting wire to connect to the power-consuming circuit from the terminal block, the positions where the power supply input end and the power supply output end of this case can be connected are more. It can be the terminal block or a certain wiring port of the circuit. And because this case supports diversified access, both the number of cables in the wiring line of the power supply control circuit and the total length of the wiring line can be further reduced.

[0031] 2. The power supply input end realizes the power supply of a pair of positive and negative voltages with equal magnitudes, and the power supply output end also realizes the transmission of a pair of positive and negative voltages with equal magnitudes, reducing the wiring layout burden of the circuit.

[0032] 3. By connecting the pins in parallel, the current that the power supply input end in the power supply control circuit can withstand is increased, and then the maximum output current value output by the power supply output end is increased, improving the power supply control adaptability for power-consuming circuits with high output current requirements.

[0033] 4. Connect all the output positive pins to the first power supply pin and the fourth power supply pin that are connected in parallel with each other through the positive power supply bus, and connect all the output negative pins to the second power supply pin and the third power supply pin that are connected in parallel with each other through the negative power supply bus, to achieve bus-type wiring, ensuring clear wiring and reducing the space occupied by the wiring.

[0034] 5. Set a protection resistor and a light-emitting diode to limit the leakage current between the power supply positive pin and the power supply negative pin, and design the light-emitting diode to display the working state of the power supply control circuit in this case.

[0035] 6. When using double-sided wiring on the PCB board, set the copper thickness of a single connecting wire to 2 ounces and the width to 2.5 mm, ensuring that the maximum current that a single connecting wire can carry is 12 A. When the power supply control circuit converts the current input from the power supply circuit into multiple output currents and transmits them to the power-consuming circuit, the output current can exceed the 2 A required by the power-consuming circuit, so as to adapt to the electronic devices in semiconductor equipment.

[0036] 7. For the power supply interface and the output interface in the power supply control device, the distance between the housing and the base can be changed by rotating the screw, ensuring the stability of the power supply circuit connected to the power supply interface through the power transmission line to connect with the power supply input end; and ensuring the stability of the power-consuming circuit connected to the output interface through the power transmission line to connect with the power supply output end. Description of the Drawings

[0037] Figure 1 is a schematic diagram of supplying power to a semiconductor device by the method of terminal block shunting in the background art;

[0038] Figure 2 is a schematic diagram of the power supply control circuit provided by the present utility model;

[0039] Figure 3 is Figure 2 a module schematic diagram of the power supply input end and the power supply output end in

[0040] Figure 4 is Figure 3 a circuit connection schematic diagram of the power supply input end and the power supply output end in

[0041] Figure 5 is Figure 3 a circuit schematic diagram of the power supply control circuit in

[0042] Figure 6 is a structural schematic diagram of the power supply control device provided by the present utility model;

[0043] Figure 7 is Figure 6 a structural schematic diagram of the PCB board in

[0044] Figure 8Table showing the relationship between temperature rise, copper thickness, line width and maximum current carrying capacity;

[0045] Figure 9 Top view of the power supply control device;

[0046] Figure 10 is Figure 9 Side view of area A in

[0047] Reference numerals are:

[0048] 10, power supply control circuit; 20, power supply circuit; 30, power consumption circuit; 101, power supply input terminal; 102, power supply output terminal; 1011, power supply positive pin; 1012, power supply negative pin; 1013, power supply ground pin; 1011-1, first power supply pin; 1012-1, second power supply pin; 1012-2, third power supply pin; 1011-2, fourth power supply pin; 1021, output positive pin; 1022, output negative pin; 1023, output ground pin; 1021-1, first output pin; 1022-1, second output pin; 1022-2, third output pin; 1021-2, fourth output pin; 11, PCB board; 12, power supply interface; 13, output interface; R, protection resistor; D, light emitting diode; 111, first via; 112, second via; 121, power supply base; 122, power supply screw; 123, power supply housing; 131, output base; 132, output screw; 133, output housing. Detailed implementation

[0049] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model. Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the present utility model pertains. The words such as "including" used herein are intended to mean that the elements or items appearing before this word cover the elements or items listed after this word and their equivalents, without excluding other elements or items.

[0050] Refer to Figure 1 As shown, in the background art, a terminal block is used to shunt the power supply current output by the power supply device. Since the terminal block needs to be directly connected to the wiring terminal of the power supply device, in fact, the connection wire between the power supply device and the power consumption device (i.e., Figure 1The length of the thick line part in the circuit is still very long, which is not conducive to simplifying the wiring.

[0051] In response to the problems existing in the prior art, embodiments of the present utility model provide a power supply control circuit and device.

[0052] For the power supply control circuit:

[0053] Reference Figure 2 The power supply control circuit 10 includes a power supply input terminal 101 electrically connected to the power supply circuit 20 and at least one power supply output terminal 102 electrically connected to the power consumption circuit 30. The power supply control circuit 10 uses a hub-like method to control power supply, with the power supply input terminal 101 connected to the power supply circuit 20 and the at least one power supply output terminal 102 connected to the power consumption circuit 30.

[0054] The power input terminal 101 can be directly connected to the wiring terminal of the power supply device in the power supply circuit 20, and the power input terminal 101 can also be indirectly connected to the power supply device in the power supply circuit 20 (for example, the power input terminal 101 is connected to one end of the transmission line, and the other end of the transmission line is connected to the power supply device). The power output terminal 102 can be directly connected to the wiring terminal of the power-consuming device in the power-consuming circuit 30, and the power output terminal 102 can also be indirectly connected to the power-consuming device in the power-consuming circuit 30 (for example, the power output terminal 102 is connected to one end of the transmission line, and the other end of the transmission line is connected to the power-consuming device). The power supply control circuit of this case supports indirect connection with the power supply device and the power-consuming device through a cluster (i.e., a Hub). Compared with connecting the power-consuming circuit 30 after diversion through the terminal block to supply power to the electronic device, the number of cables in the wiring line and the total length of the wiring line are reduced. Here, the power supply positive pin is connected to at least one output positive pin, that is, the power supply positive pin can be connected to all output positive pins, or can be connected to some output positive pins. Similarly, the power supply negative pin 1012 is connected to at least one output negative pin 1022, and the power supply ground pin 1013 is connected to at least one output ground pin 1023; and the power supply input end 101 is connected to at least one power supply output end 102. When the power supply input end 101 is connected to the power supply output end 102, the power supply positive pin 1011, the power supply negative pin 1012 and the power supply ground pin 1013 of the power supply input end 101 are respectively connected one by one to the output positive pin 1021, the output negative pin 1022 and the output ground pin 1023 of the power supply output end 102.

[0055] refer to Figure 3The power supply input terminal 101 has a positive power supply pin 1011, a negative power supply pin 1012, and a ground power supply pin 1013. The power supply output terminal 102 has a positive output pin 1021, a negative output pin 1022, and an output ground pin 1023. The positive power supply pin 1011 is connected to the positive output pin 1021, the negative power supply pin 1012 is connected to the negative output pin 1022, and the ground power pin 1013 is connected to the ground output pin 1023. The power supply input terminal 101 supplies a pair of equal positive and negative voltages, and the power supply output terminal 102 transmits a pair of equal positive and negative voltages, reducing the burden of circuit routing layout.

[0056] In some examples, the positive power supply pin 1011 and the negative power supply pin 1012 each include at least one power supply pin that is connected in parallel.

[0057] The positive power supply pin 1011 is composed of a plurality of power supply pins connected in parallel, for example, two power supply pins connected in parallel (refer to Figure 4 ), for example, three power supply pins connected in parallel. The negative power supply pin 1012 is composed of multiple output pins connected in parallel, for example, two output pins connected in parallel (refer to Figure 4 ), or three output pins connected in parallel. This example increases the current capacity of the power supply input terminal 101 in the power supply control circuit 10 by connecting the pins in parallel, improving the adaptability of the power supply control circuit 10 and increasing the maximum output current value of the power supply output terminal 102. This ensures that when the current capacity of the electronic components of the power-consuming device in the power-consuming circuit 30 is greater than or equal to 2A, the current output by the power output pins in this embodiment can better meet the adaptability requirements of the electronic components of the power-consuming device.

[0058] For further reference, Figure 4 and Figure 5 , power supply input terminal 101 (ie Figure 5 In the embodiment, the positive power supply pin 1011 includes a first power supply pin 1011-1 (ie, Figure 5 1 pin (P) and the fourth power supply pin 1011-2 (i.e. Figure 5 Pin 4 (P in the figure) is used to transmit the positive power supply signal (i.e. Figure 5 The power supply input terminal 101 (i.e. Figure 5 In the embodiment, the negative power supply pin 1012 includes a second power supply pin 1012-1 (ie, Figure 5 2 pin (P) and the third power supply pin 1012-2 (i.e. Figure 5 Pin 3 (P in the figure) is used to transmit the negative power supply signal (i.e. Figure 5 The power supply input terminal 101 (i.e.Figure 5 In the power supply ground pin 1013 (i.e., Figure 5 pin No. 5 of P in the figure), which is used to transmit the ground signal (i.e., Figure 5 PE of P in the figure).

[0059] The power supply output terminal 102 (i.e., Figure 5 U1 - U8 in the figure), the output positive pin 1021 includes a first output pin 1021 - 1 (i.e., Figure 5 pin No. 1 of U1 - U8 in the figure) and a fourth output pin 1021 - 2 (i.e., Figure 5 pin No. 4 of U1 - U8 in the figure) which are connected in parallel with each other. The output negative pin 1022 includes a second output pin 1022 - 1 (i.e., Figure 5 pin No. 2 of U1 - U8 in the figure) and a third output pin 1022 - 2 ( Figure 5 pin No. 3 of U1 - U8 in the figure) which are connected in parallel with each other. The power supply output terminal 102 (i.e., Figure 5 U1 - U8 in the figure), the output ground pin 1023 (i.e., Figure 5 pin No. 5 of U1 - U8 in the figure), which is used to transmit the ground signal (i.e., Figure 5 PE of P in the figure).

[0060] On the one hand, in this case, the power supply positive pin 1011 uses two pins connected in parallel with each other, and the power supply negative pin 1012 also uses two pins connected in parallel with each other. Considering that the current - carrying capacity of a single transmission line between pins is fixed after programming, in this case, by connecting two pins in parallel, the current that the power supply input terminal 101 in the power supply control circuit 10 can withstand is increased, so that the power supply control circuit 10 can withstand a higher maximum current from the power supply circuit 20, and thus the maximum output current value output by the power supply output terminal 102 is increased.

[0061] On the other hand, to avoid transmission interference of the transmission line between pins, the power supply negative pin 1012 is arranged between the power supply positive pins 1011, and the output negative pin 1022 is arranged between the output positive pins 1021, ensuring that even if there is leakage current, they can cancel each other out as much as possible, improving the stability of current transmission.

[0062] For the wiring connection between the power supply input terminal 101 and the power supply output terminal 102 in the power supply control circuit 10, refer to Figure 4 and Figure 5 .

[0063] All the positive power supply pins 1011 in the power supply input terminal 101 are connected in parallel to the positive power supply bus, and each positive output pin 1021 is connected to the positive power supply bus; all the negative power supply pins 1012 in the power supply input terminal 101 are connected in parallel to the negative power supply bus, and each negative output pin 1022 is connected to the negative power supply bus; all the ground power supply pins in the power supply input terminal 101 are connected to the ground power supply bus, and each output ground pin 1023 is connected to the ground power supply bus. All the positive power supply pins 1011 and the positive output pins 1021 are connected via the positive power supply bus, all the negative power supply pins 1012 and the negative output pins 1022 are connected via the negative power supply bus, and all the ground power supply pins 1013 and the output ground pins 1023 are connected via the ground power bus; bus-type wiring is implemented to ensure clear wiring and reduce the space occupied by wiring.

[0064] Furthermore, when the positive power supply pin 1011 of the power supply input end 101 includes a first power supply pin 1011-1 and a fourth power supply pin 1011-2 connected in parallel, and the negative power supply pin 1012 includes a second power supply pin 1012-1 and a third power supply pin 1012-2 connected in parallel, the specific wiring is as follows:

[0065] The first power supply pin 1011-1 and the fourth power supply pin 1011-2 are connected in parallel to the positive power supply bus, and each output positive pin 1021 is connected to the positive power supply bus. The second power supply pin 1012-1 and the third power supply pin 1012-2 are connected in parallel to the negative power supply bus, and each output negative pin 1022 is connected to the negative power supply bus. The power supply ground pin 1013 is connected to the power supply ground bus, and each output ground pin 1023 is connected to the power supply ground bus. Specifically, the first output pin 1021-1 and the fourth output pin 1021-2 are both connected to the positive power supply bus, and the second output pin 1022-1 and the fourth output pin 1021-2 are both connected to the negative power supply bus.

[0066] All output positive pins 1021 are connected to the first power supply pin 1011-1 and the fourth power supply pin 1011-2 in parallel through the power supply positive bus, and all output negative pins 1022 are connected to the second power supply pin 1012-1 and the third power supply pin 1012-2 in parallel through the power supply negative bus, thereby realizing bus-type wiring, ensuring clear wiring, and reducing the space occupied by wiring.

[0067] In some examples, reference Figure 5, the power supply control circuit 10 further includes a protection resistor R and a light-emitting component. The first end of the protection resistor R is connected to the power supply positive pin 1011, the second end of the protection resistor R is connected to the first end of the light-emitting component, and the second end of the light-emitting component is connected to the power supply negative pin 1012. Preferably, the light-emitting component is a light-emitting diode D. The positive electrode of the light-emitting diode D is connected to the second end of the protection resistor R, and the negative electrode of the light-emitting diode D is connected to the power supply negative pin 1012.

[0068] In this example, the protection resistor R ensures the voltage difference between the power supply positive pin 1011 and the power supply negative pin 1012, and restricts the reverse flow of current from the power supply negative pin 1012 to the power supply positive pin 1011; the positive electrode of the light-emitting diode D is connected to the power supply positive pin 1011 through the protection resistor R, and the negative electrode is connected to the power supply negative pin 1012. The directionality of the light-emitting diode D avoids the leakage of current from the power supply positive pin 1011 to the power supply negative pin 1012. And the light-emitting diode D lights up when the voltage difference between the power supply positive bus and the power supply negative bus reaches the lighting critical value, thereby indicating that the power supply control circuit 10 is working properly; the light-emitting diode D goes out when the voltage difference between the power supply positive bus and the power supply negative bus does not reach the lighting critical value, indicating that there is no power supply input to the power supply control circuit 10 or the current or voltage from the power supply circuit 20 in the power supply control circuit 10 is too low.

[0069] In some examples, the current-carrying capacity of a single connecting wire between the power supply positive pin and the output positive pin is less than or equal to 12A.

[0070] Since both the power supply positive pin 1011 and the power supply negative pin 1012 include multiple mutually parallel pins, the maximum current-carrying capacity of a single connecting wire connected to each pin reaches 12A. The maximum current that the power supply input terminal 101 can transmit is N * 12A (N is the number of mutually parallel pins in the power supply positive pin 1011), and the maximum current value that the power supply negative pin can transmit is M times that of 12A (M is the number of mutually parallel connecting wires in the power supply negative pin). The power supply input terminal is composed of a power supply positive pin, a power supply negative pin, and a power supply ground pin. The power supply positive pin and the power supply negative pin cooperate with each other, and the maximum current value that the entire power supply input terminal can transmit is K times that of 12A (K is the minimum value between M and N).

[0071] Usually, the number of power supply positive pins 1011 in the same power supply input terminal 101 is the same as the number of power supply negative pins 1012, that is, M = N. Therefore, the maximum current that the power supply input terminal 101 can transmit is N * 12A (N is the number of mutually parallel pins in the power supply positive pin 1011). For example Figure 5As shown, the positive power supply pin 1011 has two pins connected in parallel with each other, and the negative power supply pin has two pins connected in parallel with each other. At this time, the maximum current that the power supply input terminal 101 can transmit is 24A, that is, the maximum current that can be distributed to the power supply output terminal 102 connected to the power-consuming circuit 30 is 24A.

[0072] The power supply output terminal can transmit a current below 24A. After the power supply control circuit distributes the current according to the preset current distribution rule, it is transmitted to these power supply output terminals connected to the power-consuming circuit 30. The current distribution rule can be set in advance and fixed, or it can be edited by the user on a programmable device and executed by the programmable device. Case: Only two power supply output terminals U2 and U7 among the eight power supply output terminals 102 are connected to their respective power-consuming circuits 30. The current distribution rule is set for the power supply output terminals connected to the power-consuming circuit 30. The minimum current required for the use of electronic devices in the power-consuming circuit 30 connected to the power supply output terminal U2 is 3A, and the minimum current required for the use of electronic devices in the power-consuming circuit 30 connected to the power supply output terminal U7 is 4.5A. Therefore, the power supply current of the power supply output terminal 102 can be controlled to 9A, and each power supply output port outputs 4.5A, which can fully meet the use requirements of the electronic devices in the two power-consuming circuits 30.

[0073] That is to say, by restricting the current-carrying capacity of the connecting wire, it is ensured that the maximum current value transmitted from the power supply output terminal 102 of this circuit to the power-consuming circuit 30 can fully meet the normal operation of electronic devices with a minimum working current greater than 2A in the power-consuming circuit 30. By restricting the current-carrying capacity of the connecting wire and using the parallel connection method between the pins, the maximum loadable current of the power supply input terminal is increased, ensuring that this circuit can adapt to high-current power supply circuits and high-current power-consuming circuits.

[0074] Regarding the power supply control device:

[0075] On the above basis, the present utility model also proposes a power supply control device. Refer to Figure 6 As shown, it includes a PCB board 11, a power supply interface 12, and an output interface 13. The PCB board 11 is programmed with any one of the above power supply control circuits 10. The power supply interface 12 is connected to the power supply input terminal 101 in the power supply control circuit 10 programmed on the PCB board 11 through a via, and the output interface 13 is connected to the power supply output terminal 102 in the power supply control circuit 10 programmed on the PCB board 11 through a via.

[0076] The details and working mode of the power supply control circuit 10 burned on the PCB board 11 are the same as the power supply control circuit 10 mentioned above, and will not be repeated here. In this case, the power supply control circuit 10 burned on the PCB board 11 in the power supply control device adopts a line-collecting method for power supply control. The power supply input terminal 101 is connected to the power supply circuit 20 through the power supply interface 12, and the power supply output terminal 102 is connected to the power-consuming circuit 30 through the output interface 13. Compared with the terminal block shunt, it is no longer constrained by the shunt position, reducing the number of cables in the wiring line and reducing the total length of the wiring line. In addition, the power supply input terminal 101 and the power supply output terminal 102 both use a pair of positive and negative voltages of equal magnitude for power supply and transmission, reducing the burden of circuit wiring layout. The via connection method of the power supply interface 12 and the power supply input terminal 101, as well as the via connection method of the output interface 13 and the power supply output terminal 102, reduce the wiring length compared to detouring from the edge of the PCB board 11.

[0077] In some examples, the PCB board 11 is a single-sided wiring PCB board, and the copper thickness of all single connecting lines in the PCB board 11 is 2 ounces and the width is 5 mm.

[0078] refer to Figure 8 As shown in the figure, when the temperature rise (temp rise, the temperature of various components in electronic and electrical equipment above the ambient temperature) is 10℃, 20℃, and 30℃ respectively, the copper thickness is 1 / 2 ounce (oz), 1 ounce (oz), and 2 ounces (oz) respectively, and the line width is 0.01 inch (i.e. 0.254mm), 0.015 inch (i.e. 0.381mm), 0.020 inch (i.e. 0.508mm)...0.200 inch (i.e. 5.08mm), and 0.250 inch (i.e. 6.35mm) respectively, the maximum current amps that a single connecting wire can withstand.

[0079] according to Figure 8 The table in Figure 1 shows that the maximum current carrying capacity of a single connection line in the PCB is 20.5A (when the temperature rise reaches 30°C) by limiting the copper thickness to 2 ounces and the wiring width to 5mm. In other words, the maximum current that each pin of the power input terminal 101 in the power supply control circuit 10 burned into the PCB board 11 can withstand is 20.5A. Figure 5 The maximum current value that the power supply input terminal 101 can withstand is 41A, that is, the power supply input terminal 101 can be used to transmit a current of 0 to 41A.

[0080] Each power supply input terminal 101 ( Figure 5 P) connects 8 power supply output terminals 102 ( Figure 5Among U1 - U8), generally only some of the power supply output terminals 102 are connected to the power-consuming circuit 30 and put into use. The user can adjust the total current transmitted by the power supply circuit 20 to the power supply input terminal 101 so that the current output by the power supply output terminals 102 put into use can meet the minimum working current of the electronic components in the power-consuming devices of the power-consuming circuit 30. For example: the minimum working current of the electronic components in the power-consuming circuit 30 is 3A, and only one power supply output terminal in the power supply control circuit is in use. The current at the power supply input terminal 101 of the power supply control circuit can be directly transmitted to this power supply output terminal 102. Therefore, the staff can adjust the power supply circuit 20 to transmit 4A current (greater than 3A) to the power supply input terminal 101, so that the electronic components in the power-consuming circuit 30 connected to the power supply output terminal 102 can work properly.

[0081] In the extreme case, all power supply output terminals 102 are put into use, and the current distribution rule indicates that all power supply output terminals 102 (referring to the power supply output terminals 102 connected to the power-consuming power supply) evenly divide the current transmitted by the power supply input terminal 101. The power supply input terminal 101 can be used to transmit 0 - 41A current, and each corresponding power supply output terminal can also transmit 0 - 5.125A, which can meet the rated current of 2A when the electronic components in the power-consuming devices of the power-consuming circuit 30 are working, ensuring that the electronic components in the power-consuming devices of the power-consuming circuit 30 can work properly.

[0082] Moreover, when the PCB board 11 is a single-sided wiring PCB board. The PCB board 11 includes the electronic components (including the protection resistor R and the light-emitting diode D) in the power supply control circuit 10, and the basic PCB board corresponding to the wiring. The electronic components are soldered on the basic PCB board to form the PCB board 11 in this case. Specifically: (1) Front soldering. The electronic components are soldered on the front of the basic PCB board to complete the physical realization of the power supply control circuit 10. (2) Back soldering. Vias are provided on the back of the basic PCB board at the positions corresponding to the pins of the electronic components. After the pins of the electronic components pass through these vias, they are soldered on the back of the basic PCB board.

[0083] In some other examples, the PCB board 11 is a double-sided wiring PCB board, and the copper thickness of all single connecting lines in the PCB board 11 is 2 ounces and the width is 2.5mm.

[0084] According to Figure 8 the table in, the maximum current-carrying capacity of a single connecting line with a copper thickness of 2 ounces and a width of 2.5mm is 12.5A. Since the PCB board 11 is double-sided wiring, the single connecting lines on both sides are regarded as Figure 5 a connecting line in the circuit diagram in only after being connected in parallel with each other, that is Figure 5 the power supply input terminal 101 in the circuit diagram in Figure 5The maximum current that the first to fourth power supply pins of P) in it can withstand is 21 A, and the maximum current that the power supply input terminal 101 can withstand is 42 A. Under normal circumstances, only by connecting the power supply output terminal 102 of the electrical circuit 30 can the current transmitted by the power supply input terminal 101 be distributed.

[0085] In the extreme case, all power supply output terminals 102 are connected to the electrical circuit 30, and all power supply output terminals 102 jointly distribute the 0 - 42 A current transmitted by the power supply input terminal 101. Assuming there is no additional distribution control device to distribute the current of the power supply output terminal 102, only referring to Figure 5 it can be known that the 0 - 42 A current is evenly distributed among these power supply output terminals 102, that is, the current that each power supply output terminal 102 can transmit is 0 - 5.25 A. This current intensity can meet the rated current (greater than or equal to 2 A) when the electronic devices in the electrical devices of the electrical circuit 30 are working, ensuring that the electronic devices of the electrical devices in the electrical circuit 30 can work normally. And the PCB board uses double-sided wiring, reducing the complexity of wiring. In some examples, the power supply control circuit 10 in the PCB can also use additional electronic components (such as programmable logic devices) to distribute the current input from the power supply input terminal 101.

[0086] When the PCB board 11 is a double-sided wiring PCB board. Referring to Figure 7 as shown, the PCB board 11 is provided with a plurality of vias, and these vias connect the traces on the front side of the PCB board to the traces on the back side of the PCB board to form a parallel connection. The vias include the first via 111 and the second via 112.

[0087] The first via 111 can be set at the edge of the PCB board 11 for fixing the position of the PCB board; for example Figure 7 the two horizontal vias located above and to the left of the "P" character in Figure 7 and for another example Figure 7 the two vertical vias located below the "P" character in Figure 7 The output ground pin 1023 of the first power supply output terminal 102 (i.e., Figure 7 U1 in Figure 7 is the 5th pin of U1 in Figure 7 and the output ground pin 1023 of the second power supply output 102 (i.e.,

[0088] The second vias 112 are disposed at positions corresponding to all pins of the power supply input terminal 101, all pins of the power supply output terminal 102, and all pins of the light-emitting diode D on the PCB board 11. All pins corresponding to the power supply input terminal 101 include a power supply positive pin 1011, a power supply negative pin 1012, and a power supply ground pin 1013; all pins corresponding to the power supply output terminal 102 include an output positive pin 1021, an output negative pin 1022, and an output ground pin 1023; all pin positions corresponding to the light-emitting diode D include a positive pin of the light-emitting diode D and a negative pin of the light-emitting diode D. The second vias 112 ensure the connection stability of all electronic components in the power supply control circuit 10 programmed on the PCB board 11.

[0089] In some examples, as referred to Figure 9 and Figure 10 shown, the power supply interface 12 is provided with a connector with adjustable height to ensure the connection stability when the power supply circuit 20 is connected to the power supply control circuit 10 programmed on the PCB board 11 through the power supply interface 12, and the output interface 13 is provided as a connector with adjustable height to ensure the connection stability when the power consumption circuit 30 is connected to the power supply control circuit 10 programmed on the PCB board 11 through the output interface 13.

[0090] Among them, the connector of the power supply interface 12 includes a power supply base 121, a power supply screw 122, and a power supply outer shell 123. The power supply base 121 is welded to the PCB board 11 and is used to ensure that the power supply circuit 20 can be connected to the power supply input terminal 101 of the power supply control circuit 10 programmed on the PCB board 11. The bottom of the power supply screw 122 is threadedly connected to the power supply base 121 (i.e., the power supply screw 122 has an external thread that matches the internal thread of the power supply base 121), and the top of the power supply screw 122 is connected to the power supply outer shell 123;

[0091] The connector of the output interface 13 includes an output base 131, an output screw 132, and an output outer shell 133. The output base 131 is welded to the PCB board 11 and is used to ensure that the power consumption circuit 30 can be connected to the power supply output terminal 102 of the power supply control circuit 10 programmed on the PCB board 11. The bottom of the output screw 132 is threadedly connected to the output base 131 (i.e., the output screw 132 has an external thread that matches the internal thread of the output base 131), and the top of the output screw 132 is connected to the output outer shell 133.

[0092] In this example, the power supply base 121 and the output base 131 have the same structure and belong to the base. The power supply screw 122 and the output screw 132 have the same structure and belong to the screw. The power supply housing 123 and the output housing 133 have the same structure and belong to the housing. The base is welded to the PCB board 11. By rotating the screw, the distance between the housing and the base is adjusted to make the exposed height of the power supply interface 12 and the output interface 13 adjustable, so as to adapt to power transmission lines of different widths.

[0093] In addition, this case also supports other mechanisms to form the power supply interface 12 and the output interface 13, so as to realize the electrical connection and firmness between the wiring terminals of the power supply circuit 20 and the power supply input end burned on the PCB board in this power supply control device, and the electrical connection and firmness between the wiring terminals of the electrical usage circuit 30 and the power supply output end burned on the PCB board in this power supply control device.

[0094] Generally speaking, in this power supply control device, by adjusting the copper thickness and width of the connecting wires in the PCB board, the current that the power supply input end can carry is increased; by changing the original single pin in the power supply positive pin and the power supply negative pin in the power supply input end to multiple pins connected in parallel with each other, the current that the power supply input end can carry is further increased multiplicatively through the connection method of pin parallel connection, so as to expand the total amount of current that can be distributed at the power supply output end.

[0095] Moreover, the power supply control device in this case does not limit the magnitude of the output current value of the power supply output end and supports flexible distribution. In the default state, the current distribution rule in the power supply control current is to evenly distribute the total current to all power supply output ends connected to the electrical usage circuit 30; and, the current distribution rule is built into the power supply control circuit, or a programmable device from the outside is introduced to perform the built-in current distribution according to the instructions input / pre-stored by the user.

[0096] Although the embodiments of the present invention have been described in detail above, it is obvious to those skilled in the art that various modifications and changes can be made to these embodiments. However, it should be understood that such modifications and changes are all within the scope and spirit of the present invention described in the claims. Moreover, the present invention described herein can have other embodiments and can be implemented or realized in various ways.

Claims

1. A power supply control circuit, characterized in that, It includes a power supply input terminal electrically connected to a power supply circuit and at least one power supply output terminal electrically connected to an electrical load circuit. The power supply input terminal is electrically connected to at least one of the power supply output terminals. The power supply input terminal has a power supply positive pin, a power supply negative pin, and a power supply ground pin. The power supply output terminal has an output positive pin, an output negative pin, and an output ground pin. The power supply positive pin is connected to the output positive pin, the power supply negative pin is connected to the output negative pin, and the power supply ground pin is connected to the output ground pin. The power supply positive pin and the power supply negative pin include a plurality of pins connected in parallel with each other.

2. The power supply control circuit according to claim 1, characterized in that, The power supply positive pin includes a first power supply pin and a fourth power supply pin connected in parallel with each other. The power supply negative pin includes a second power supply pin and a third power supply pin connected in parallel with each other. The output positive pin includes a first output pin and a fourth output pin connected in parallel with each other. The output negative pin includes a second output pin and a third output pin connected in parallel with each other.

3. The power supply control circuit according to claim 2, wherein After the first power supply pin and the fourth power supply pin are connected in parallel, they are connected to a power supply positive bus. Each of the output positive pins is connected to the power supply positive bus; after the second power supply pin and the third power supply pin are connected in parallel, they are connected to a power supply negative bus. Each of the output negative pins is connected to the power supply negative bus. The power supply ground pin is connected to a power supply ground bus, and each of the output ground pins is connected to the power supply ground bus.

4. The power supply control circuit according to claim 3, wherein Both the first output pin and the fourth output pin are connected to the power supply positive bus, and both the second output pin and the fourth output pin are connected to the power supply negative bus.

5. The power supply control circuit according to claim 1, characterized in that The power supply control circuit further includes a protection resistor and a light-emitting component. The first end of the protection resistor is connected to the power supply positive pin, the second end of the protection resistor is connected to the first end of the light-emitting component, and the second end of the light-emitting component is connected to the power supply negative pin.

6. The power supply control circuit according to claim 5, wherein The light-emitting component is a light-emitting diode. The positive electrode of the light-emitting diode is connected to the second end of the protection resistor, and the negative electrode of the light-emitting diode is connected to the power supply negative pin.

7. The power supply control circuit according to claim 1, wherein The current-carrying capacity of a single connecting wire between the power supply positive pin and the output positive pin is less than or equal to 12 A.

8. A power supply control device, characterized in that, It includes a PCB board, a power supply interface, and an output interface. The PCB board is programmed with the power supply control circuit according to any one of claims 1-7. The power supply interface is connected to the power supply input terminal through a via hole, and the output interface is connected to the power supply output terminal through a via hole.

9. The power supply control device according to claim 8, characterized in that, The PCB board is a double-sided wiring PCB board. The copper thickness of all single connecting wires in the PCB board is 2 ounces, and the width is 2.5 mm.

10. The power supply control device according to claim 8, characterized in that, The PCB board is a single-sided wiring PCB board. The copper thickness of all single connecting wires in the PCB board is 2 ounces, and the width is 5 mm.

11. The power supply control device according to claim 8, characterized in that, Both the power supply interface and the output interface include a base, a screw, and a housing. The base is welded to the PCB board. The bottom of the screw has an external thread that matches the internal thread in the base, and the top of the screw is connected to the housing.

12. The power supply control device according to claim 8, characterized in that, The PCB board is provided with a first via hole and a second via hole. The first via hole is located at the edge of the PCB board and at a point corresponding to a point on the connecting line between the power supply pin and the output pin. The second via hole is located at the position of the PCB board corresponding to the power supply pin and at the position of the PCB board corresponding to the output pin. The power supply pin includes the power supply positive pin, the power supply negative pin, and the power supply ground pin. The output pin includes the output positive pin, the output negative pin, and the output ground pin.

Images