CN206759763U - A kind of constant-current control circuit of multiple-channel output - Google Patents
A kind of constant-current control circuit of multiple-channel output Download PDFInfo
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- CN206759763U CN206759763U CN201621307687.4U CN201621307687U CN206759763U CN 206759763 U CN206759763 U CN 206759763U CN 201621307687 U CN201621307687 U CN 201621307687U CN 206759763 U CN206759763 U CN 206759763U
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- power conversion
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Abstract
The utility model discloses a kind of constant-current control circuit of multiple-channel output, including power conversion circuit, the output end of the power conversion circuit is connected with multiple output current acquisition modules respectively, and the output end of each output current acquisition module connects with corresponding output loading respectively；Also include output current signal acquisition processing module, its signal input part is connected with multiple output current acquisition modules respectively, and its signal output part is connected with the power conversion circuit；The utility model need not be both provided with constant-current circuit per output all the way so that circuit structure is simpler, and cost is cheap.
Description
Technical field
It the utility model is related to a kind of constant-current control circuit of multiple-channel output.
Background technology
At present, the multiple constant current output applied to LED illumination substantially uses：
1. multiple constant current AC-DC circuits either constant current DC-DC circuit or linear constant current electric current, i.e., per having exported all the way
Corresponding constant-current circuit.These schemes can cause circuit complicated, with high costs.
A 2. multiple-channel output constant-current supply used in parallel.The problem of program, is, per electric current meeting all the way because wherein
Open circuit causes the electric current increase that other roads export all the way, reduces system reliability.
Utility model content
The purpose of the utility model is that a kind of simple structure, high reliability cost is provided the defects of presence for prior art is low
The constant-current control circuit of honest and clean multi-channel parallel output.
The utility model to achieve the above object, adopts the following technical scheme that：A kind of constant-current control circuit of multiple-channel output,
Including power conversion circuit, the output end of the power conversion circuit is connected with multiple output current acquisition modules respectively, each
The output end of the output current acquisition module connects with corresponding output loading respectively；Also include at output current signal collection
Module is managed, its signal input part is connected with multiple output current acquisition modules respectively, its signal output part and the power
Translation circuit connects；
Wherein, the output current acquisition module gathers per output current all the way and passes to output current signal processing
Module, the output current signal processing module handles the current information of output well, and passes to power conversion circuit, by described
The current information that power conversion circuit gathers according to the output current signal processing module is converted to constant current output.
The beneficial effects of the utility model：
1st, the utility model need not be both provided with constant-current circuit per output all the way so that circuit structure is simpler, cost
It is cheap.
2nd, the utility model can adjust total output current according to output situation, can basis when the output no-load of part
Need to reduce output current, so as to keep the output of All other routes constant, improve reliability.
3rd, the utility model is controlled by output current signal processing module and exported, and can be easy to connect with digital processing chip
Connect, easily realization is more multi-functional, adapts to different demands.
4th, the utility model is applied to more output ways, strong adaptability.
Brief description of the drawings
Fig. 1 is functional schematic of the present utility model.
Embodiment
Shown in Fig. 1, it is related to a kind of constant-current control circuit of multiple-channel output, including power conversion circuit, the power conversion
The output end of circuit is connected with multiple output current acquisition modules respectively, each output current acquisition module respectively with it is corresponding
Output loading connection；Also include output current signal acquisition processing module, its signal input part respectively with multiple outputs
Current acquisition module is connected, and its signal output part is connected with the power conversion circuit；
Wherein, the output current acquisition module gathers per output current all the way and passes to output current signal processing
Module, the output current signal processing module handles the current information of output well, and passes to power conversion circuit, by described
The current information that power conversion circuit gathers according to the output current signal processing module is converted to constant current output.
The utility model includes (but not limited to) in the following manner realization：
Power conversion circuit：Existing Switching Power Supply can be used as power conversion circuit, and it can be according to output current signal
Input power is converted into constant-current supply and is transferred to output current acquisition module by the signal of processing module.
The power-varying circuitry mainly includes two classes：
1. PFC and energy conversion transmission share the single step arrangement of magnetic device.
2. PFC and energy transmission structure use the two-layer configuration of different magnetic devices.
Output current acquisition module：
1. use sampling resistor collection output current.
2. use current transformer collection output current.
Output current signal processing module：
1. single-chip microcomputer is used as output current information processing module；
2. other modes handle output current information and pass to power conversion circuit.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc., guarantor of the present utility model should be included in
Within the scope of shield.
Claims (1)
- A kind of 1. constant-current control circuit of multiple-channel output, it is characterised in that including power conversion circuit, the power conversion circuit Output end be connected respectively with multiple output current acquisition modules, the output end of each output current acquisition module respectively with Corresponding output loading connection；Also include output current signal acquisition processing module, its signal input part respectively with it is multiple described Output current acquisition module is connected, and its signal output part is connected with the power conversion circuit；Wherein, the output current acquisition module gathers per output current all the way and passes to output current signal processing mould Block, the output current signal processing module handles the current information of output well, and passes to power conversion circuit, by the work( The current information that rate translation circuit gathers according to the output current signal processing module is converted to constant current output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621307687.4U CN206759763U (en) | 2016-11-30 | 2016-11-30 | A kind of constant-current control circuit of multiple-channel output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621307687.4U CN206759763U (en) | 2016-11-30 | 2016-11-30 | A kind of constant-current control circuit of multiple-channel output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206759763U true CN206759763U (en) | 2017-12-15 |
Family
ID=60607564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621307687.4U Active CN206759763U (en) | 2016-11-30 | 2016-11-30 | A kind of constant-current control circuit of multiple-channel output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206759763U (en) |
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2016
- 2016-11-30 CN CN201621307687.4U patent/CN206759763U/en active Active
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