CN218473032U

CN218473032U - Power module application circuit

Info

Publication number: CN218473032U
Application number: CN202222897958.8U
Authority: CN
Inventors: 贾立江
Original assignee: Sv Power System Shanghai Co ltd
Current assignee: Sv Power System Shanghai Co ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2023-02-10
Anticipated expiration: 2032-11-01

Abstract

The utility model relates to a power supply circuit technical field discloses a power module application circuit, including lightning protection circuit, anti-surge circuit, preceding stage filter circuit, back stage filter circuit and power module, power module is including transmission of electricity pressure input end, remote control end, voltage output end, and lightning protection circuit, anti-surge circuit, preceding stage filter circuit are connected to power module's voltage input end between the positive negative pole of input interface after and, and power module's voltage output end is connected to back stage filter circuit is connected to output interface. The utility model discloses not only can resist the surge thunderbolt at adverse circumstances, filtering is reliable, compact structure again.

Description

Power module application circuit

Technical Field

The utility model relates to a power supply circuit technical field especially relates to a power module application circuit.

Background

On some special electric equipment, the requirements on the power supply quality and the continuity of a power supply are very high, for example, in places such as trains and outdoor bases, the requirements on the power supply quality are high, the environment is severe, and various sudden destructive working conditions are frequently generated.

For outdoor places, the power supply is required to be stable in power supply and high in anti-interference capability, and can resist thunderstrike and other disastrous weather. For locomotive equipment such as trains, the power supply module is required to be small in size and convenient to operate.

The existing power module can achieve the high-quality anti-interference and anti-lightning-strike functions, and is generally large in size and inconvenient to install. The dual requirements of small size and strong function can not be achieved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above problem, providing a power module application circuit, not only can resist the surge thunderbolt in adverse circumstances, filtering is reliable, compact structure again.

The utility model adopts the technical proposal that:

the utility model provides a power module application circuit, characterized by, includes lightning protection circuit, anti-surge circuit, preceding stage filter circuit, back stage filter circuit and power module, power module is including transmission voltage input end, remote control end, voltage output end, lightning protection circuit, anti-surge circuit, preceding stage filter circuit and back are connected to power module's voltage input end between the positive negative pole of input interface, and power module's voltage output end is connected to be connected to output interface behind the back stage filter circuit.

Further, the lightning protection circuit comprises three piezoresistors and an anti-detonator which are arranged between the anode and the cathode of the input interface in parallel, a second third piezoresistor is connected in series and then connected with the first piezoresistor in parallel, and the anti-detonator is connected out of the middle of the second third piezoresistor and then grounded.

Further, the pre-stage filter circuit comprises a common-mode inductor arranged between the anode and the cathode of the input interface, two first capacitors are arranged at the front end of the common-mode inductor in parallel, and two second capacitors are arranged at the rear end of the common-mode inductor in parallel.

Further, the anti-surge circuit comprises a transient suppression diode arranged at the rear end of the common mode inductor.

Further, the post-stage filter circuit comprises a third capacitor and a fourth capacitor which are arranged in parallel at the voltage output end of the power supply module.

Further, a signal lead terminal is arranged on the input interface and connected to a remote control terminal of the power module.

Furthermore, a logic resistor is connected between the remote control end of the power supply module and the negative electrode of the input interface.

Furthermore, a fuse is connected to the positive electrode of the input interface.

Furthermore, the power module also comprises an output voltage adjustable end, and a voltage adjustable resistor is connected between the voltage output end and the output voltage adjustable end.

Further, the first capacitor is a polypropylene capacitor, the third capacitor is a monolithic capacitor, and the second and fourth capacitors are electrolytic capacitors.

The utility model has the advantages that:

(1) The electric appliance has fewer parts and exquisite design, so that the equipment has a small structure and complete functions;

(2) The filter can resist surge lightning stroke in severe environment and has excellent filtering capability;

(3) The external remote control end is convenient for a client to externally control the on and off of the power supply module, and the output voltage is adjustable.

Drawings

Fig. 1 is a circuit diagram of the present invention.

Detailed Description

The following describes in detail a specific embodiment of the power module application circuit according to the present invention with reference to the accompanying drawings.

Referring to fig. 1, the power module application circuit includes a lightning protection circuit, an anti-surge circuit, a pre-stage filter circuit, a post-stage filter circuit and a power module, the front end is an input interface, and the rear end is an output interface, so that peripheral field application of the power module is realized.

The power module M1 is mainly used for converting voltage, the input and the output are completely isolated, and the input and the output can be used for boosting or reducing voltage. The power module is a patch piece in the prior art, has small external structure size, and realizes functions through an external application circuit.

The CNT terminal of the power module is a remote control terminal of the module and can be controlled to be turned on and turned off externally. The positive and negative S ends are output voltage compensation ends. The TRIM end is an output voltage adjustable end and can float up and down to output a voltage value. VIN +, VIN-, OUT and OUT-are respectively a voltage input end and a voltage output end of the power module.

The lightning protection circuit, the surge protection circuit and the preceding stage filter circuit are connected in parallel and then connected to a voltage input end of the power supply module from the position between the anode and the cathode of the input interface CN1, and a voltage output end of the power supply module is connected to the subsequent stage filter circuit and connected to the output interface CN2.

Specifically, the terminal 1 of the input interface CN1 is a positive electrode, 2 is a negative electrode, and 3 is a signal line led out from an external remote control end of the power module M1, so that the power module M1 can be controlled to be turned on and off by a client. The output terminal 123 of the output interface CN2 outputs a negative electrode 456 and a positive electrode. The positive electrode of the input interface is connected with a FUSE FUSE, and the FUSE value can be determined by multiplying the input current of the power supply module M1 by 2.5 times.

The lightning protection circuit comprises three piezoresistors and an anti-detonator which are arranged between the anode and the cathode of the input interface in parallel, the second piezoresistor RV2 and the third piezoresistor RV3 are connected in series and then connected with the first piezoresistor RV1 in parallel, and the anti-detonator VP1 is grounded after being connected out of the middle of the second piezoresistor and the third piezoresistor. The piezoresistors are all of type S20K510.

The pre-stage filter circuit comprises a common-mode inductor L1 arranged between the anode and the cathode of the input interface, two first capacitors C1 and C2 are arranged at the front end of the common-mode inductor in parallel, and two second capacitors C33 and C34 are arranged at the rear end of the common-mode inductor in parallel. The capacitors C1 and C2 are polypropylene capacitors, and the capacitors C33 and C34 are electrolytic capacitors.

And an anti-surge circuit is formed by a transient suppression diode D3 at the rear end of the common mode inductor, and the type of the transient suppression diode is 5KP64VA.

The power supply module further comprises a remote control input end, a signal lead end is arranged on the input interface, and the signal lead end is connected to the remote control end of the power supply module. And a logic resistor R1 is connected between the remote control end and the cathode of the input interface. The logic resistor R1 is a 0 resistor or is used in a suspension mode, and because the power module M1 is divided into positive logic and negative logic, the logic resistor R1 is normally operated in a suspension mode when the power module is in the positive logic, and is turned off otherwise. And when the module is in negative logic, the logic resistor R1 is connected with a 0 ohm resistor to normally work, otherwise, the logic resistor R1 is closed.

The post-stage filter circuit comprises a third capacitor C39 and a fourth capacitor C37 which are arranged in parallel at the voltage output end of the power supply module and are respectively a monolithic capacitor and an electrolytic capacitor.

And a voltage adjustable resistor R2 is connected between the TRIM end of the power supply module and the voltage output end, so that voltage compensation can be performed on the user service board.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A power module application circuit, comprising: including lightning protection circuit, anti-surge circuit, preceding stage filter circuit, back level filter circuit and power module, power module is including transmission voltage input end, remote control end, voltage output end, lightning protection circuit, anti-surge circuit, preceding stage filter circuit connect back from being connected to power module's voltage input end between the positive negative pole of input interface, power module's voltage output end is connected to be connected to output interface behind the back level filter circuit.

2. The power module application circuit of claim 1, wherein: the lightning protection circuit comprises three piezoresistors and an anti-detonation device which are arranged between the anode and the cathode of the input interface in parallel, the second and third piezoresistors are connected in series and then connected in parallel with the first piezoresistor, and the anti-detonation device is connected out of the middle of the second and third piezoresistors and then grounded.

3. The power module application circuit of claim 2, wherein: the pre-stage filter circuit comprises a common-mode inductor arranged between a positive electrode and a negative electrode of an input interface, two first capacitors are arranged at the front end of the common-mode inductor in parallel, and two second capacitors are arranged at the rear end of the common-mode inductor in parallel.

4. The power module application circuit of claim 3, wherein: the anti-surge circuit comprises a transient suppression diode arranged at the rear end of the common mode inductor.

5. The power module application circuit of claim 4, wherein: the post-stage filter circuit comprises a third capacitor and a fourth capacitor which are arranged in parallel at the voltage output end of the power supply module.

6. The power module application circuit according to any one of claims 1 to 5, wherein: and the input interface is provided with a signal lead terminal, and the signal lead terminal is connected to the remote control end of the power supply module.

7. The power module application circuit according to any one of claims 1 to 5, wherein: and a logic resistor is connected between the remote control end of the power supply module and the negative electrode of the input interface.

8. The power module application circuit according to any one of claims 1 to 5, wherein: and a fuse is connected to the positive pole of the input interface.

9. The power module application circuit according to any one of claims 1 to 5, wherein: the power supply module further comprises an output voltage adjustable end, and a voltage adjustable resistor is connected between the voltage output end and the output voltage adjustable end.

10. The power module application circuit of claim 5, wherein: the first capacitor is a polypropylene capacitor, the third capacitor is a monolithic capacitor, and the second and fourth capacitors are electrolytic capacitors.