CN209593277U - The interference attenuation circuit output and input for power module - Google Patents
The interference attenuation circuit output and input for power module Download PDFInfo
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- CN209593277U CN209593277U CN201920329409.6U CN201920329409U CN209593277U CN 209593277 U CN209593277 U CN 209593277U CN 201920329409 U CN201920329409 U CN 201920329409U CN 209593277 U CN209593277 U CN 209593277U
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- power module
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- interference
- output end
- attenuation circuit
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Abstract
The utility model discloses a kind of interference attenuation circuits output and input for power module, including DC/DC power module and multiple capacitors, multiple capacitors are divided into two groups, and it is connected in parallel respectively, wherein the both ends of capacitor described in one group are electrically connected with the electrode input end of the DC/DC power module and cathode output end respectively, and the both ends of capacitor described in another group are electrically connected with the negative input of the DC/DC power module and cathode output end respectively.Power module input disturbance is exported to the circuit of output end for the interference attenuation circuit that power module is output and input by the utility model by multiple capacitors, change the original frequency characteristic of interference with this, interference can be greatly reduced, preferable interference suppressioning characteristic is obtained.
Description
Technical field
The utility model relates to power circuit more particularly to a kind of interference attenuation electricity output and input for power module
Road.
Background technique
DC/DC power module generally has input and output side pin, dry to the signal of output end in order to solve input terminal
Problem is disturbed, generally requires and installs many filtering devices (resistor, capacitor, inductor etc.) additional in input terminal or output end to inhibit
Interference, but often due to electronic system environment where power module complexity, these filter circuits of installation cannot be good
Filter effect, can not solve the problems, such as that system where power module is disturbed.
Utility model content
The purpose of this utility model is that solve the above-mentioned problems and provides a kind of for power module input and defeated
Interference attenuation circuit out.
The utility model achieves the above object through the following technical schemes:
A kind of interference attenuation circuit output and input for power module, including DC/DC power module and multiple capacitors
Device, multiple capacitors are divided into two groups, and are connected in parallel respectively, wherein the both ends of capacitor described in one group respectively with it is described
The electrode input end and cathode output end of DC/DC power module are electrically connected, the both ends of capacitor described in another group respectively with it is described
The negative input and cathode output end of DC/DC power module are electrically connected.
Preferably, multiple capacitors are divided into two groups.
The utility model has the beneficial effects that:
The utility model passes through multiple capacitors for power supply mould for the interference attenuation circuit that power module is output and input
Block input disturbance exports to the circuit of output end, changes the original frequency characteristic of interference with this, can greatly reduce interference, obtain
Obtain preferable interference suppressioning characteristic.
Detailed description of the invention
Fig. 1 is the structural representation of the interference attenuation circuit described in the utility model output and input for power module
Figure.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
As shown in Figure 1, a kind of interference attenuation circuit output and input for power module of the utility model, including DC/
DC power module and multiple capacitors, multiple capacitors are divided into two groups, and are connected in parallel respectively, wherein the two of a group capacitor
End be electrically connected respectively with the electrode input end of DC/DC power module and cathode output end, the both ends of another group capacitor respectively with
The negative input and cathode output end of DC/DC power module are electrically connected.
Working principle of the utility model for the interference attenuation circuit that power module is output and input is as follows:
Directly in the input of power module and corresponding output end multiple capacitors (Cx~Cn) in parallel, capacitor in parallel
Quantity and capacitance are determined by the interference characteristic of actual test circuit.
Since the input disturbance of power module can be coupled to back end output by capacitor, to change the frequency of interference
The impedance operator of rate characteristic and circuit can greatly be interfered present in attenuator circuit, solve the interference of power module application
Problem.
The limitation that the technical solution of the utility model is not limited to the above specific embodiments, all skills according to the present utility model
The technology deformation that art scheme is made, each falls within the protection scope of the utility model.
Claims (2)
1. a kind of interference attenuation circuit output and input for power module, it is characterised in that: including DC/DC power module and
Multiple capacitors, multiple capacitors are divided into two groups, and are connected in parallel respectively, wherein the both ends of capacitor described in one group are distinguished
It is electrically connected with the electrode input end of the DC/DC power module and cathode output end, the both ends difference of capacitor described in another group
It is electrically connected with the negative input of the DC/DC power module and cathode output end.
2. the interference attenuation circuit according to claim 1 output and input for power module, it is characterised in that: multiple
The capacitor is divided into two groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920329409.6U CN209593277U (en) | 2019-03-14 | 2019-03-14 | The interference attenuation circuit output and input for power module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920329409.6U CN209593277U (en) | 2019-03-14 | 2019-03-14 | The interference attenuation circuit output and input for power module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209593277U true CN209593277U (en) | 2019-11-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920329409.6U Active CN209593277U (en) | 2019-03-14 | 2019-03-14 | The interference attenuation circuit output and input for power module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209593277U (en) |
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2019
- 2019-03-14 CN CN201920329409.6U patent/CN209593277U/en active Active
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