CN106533132B - Opto-coupled feedback circuit structure with low-power consumption - Google Patents
Opto-coupled feedback circuit structure with low-power consumption Download PDFInfo
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- CN106533132B CN106533132B CN201611077000.7A CN201611077000A CN106533132B CN 106533132 B CN106533132 B CN 106533132B CN 201611077000 A CN201611077000 A CN 201611077000A CN 106533132 B CN106533132 B CN 106533132B
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- switch
- power consumption
- circuit structure
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Electronic Switches (AREA)
Abstract
The present invention relates to a kind of opto-coupled feedback circuit structure with low-power consumption, including electro-optical feedback triode, resistance R, switch K1, switch K2 and sample holding unit, the collector of the electro-optical feedback triode passes sequentially through switch K1, resistance R is connected to chip interior power vd D, the collector of the opto-coupled feedback triode also passes through switch K2 and is connected to feedback end, feedback end is connected to the first end of sample holding unit, the second end of sample holding unit is grounded, it is a capacitor that the sampling, which keeps end, and capacitance and the circuit are adapted.The switch K1 and switch K2 is controlled by same a period of time signal, and the frequency of the time cycle signal is certain value.There is the opto-coupled feedback circuit structure of low-power consumption using this kind, significantly reduce the average current of opto-coupled feedback circuit consumption, this part Overall Power Consumption i.e. relevant to the electric current, circuit overall structure is simple, using convenient, it can be applied in various Switching Power Supplies, be suitable for large-scale promotion application.
Description
Technical field
The present invention relates to circuit structure technical fields, more particularly to the isolation type switching power supply circuit with photoelectric coupled circuit structure
Technical field, in particular to a kind of opto-coupled feedback circuit structure with low-power consumption.
Background technique
Traditional opto-coupled feedback transistor collector fixes connecting resistance to chip interior power supply.As shown in Figure 1, being existing
Opto-coupled feedback circuit structure.
Traditional opto-coupled feedback circuit operation principle in Fig. 1 are as follows: in opto-coupled feedback transistor collector connecting resistance R to chip
Portion power vd D, FB connect the collector of the opto-coupled feedback triode, and the average current of opto-coupled feedback circuit consumption is (VDD-
FB)/R。
The average current of traditional opto-coupled feedback circuit consumption is larger, causes biggish stand-by power consumption.
Summary of the invention
The purpose of the present invention is overcoming the above-mentioned prior art, provides one kind and can be realized and significantly reduce
Average current, the optocoupler with low-power consumption of this part Overall Power Consumption i.e. relevant to the electric current of opto-coupled feedback circuit consumption are anti-
Feed line structure.
To achieve the goals above, the present invention has following constitute:
The opto-coupled feedback circuit structure with low-power consumption, is mainly characterized by, and the circuit structure includes that photoelectricity is anti-
Feedback triode, resistance R, switch K1, switch K2 and sample holding unit, the collector of the electro-optical feedback triode successively lead to
Cross switch K1, resistance R is connected to chip interior power vd D, the collector of the electro-optical feedback triode also passes through switch K2
It is connected to feedback end, feedback end is connected to the first end of sample holding unit, the second end ground connection of sample holding unit.
Preferably, the switch K1 and switch K2 are controlled by same signal.
More preferably, the signal is clock cycle signal.
Further, the sample frequency of the clock cycle signal is the definite value of a systemic presupposition.
Further, the sampling pulsewidth of the clock cycle signal is the definite value of a systemic presupposition.
Preferably, the sample holding unit is capacitor C.
Using the opto-coupled feedback circuit structure with low-power consumption in the invention, due to indirectly in its feedback end and ground
Have a holding unit, the presence of the unit significantly reduces the average current of opto-coupled feedback circuit consumption, i.e., with the electric current
This relevant part Overall Power Consumption, circuit overall structure is simple, using conveniently, can be applied in various Switching Power Supplies, is applicable in
In large-scale promotion application.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of opto-coupled feedback circuit structure in the prior art.
Fig. 2 is the structural schematic diagram of the opto-coupled feedback circuit structure with low-power consumption of the invention.
Fig. 3 is applied to the clock cycle signal CP waveform diagram in the circuit of Fig. 2.
Specific embodiment
It is further to carry out combined with specific embodiments below in order to more clearly describe technology contents of the invention
Description.
To achieve the goals above, the opto-coupled feedback circuit structure of low-power consumption of the invention include electro-optical feedback triode,
Resistance, two switches and sampling holding capacitor, the collector of electro-optical feedback triode is through a switch connecting resistance to chip interior
Power supply, meanwhile, the collector of the electro-optical feedback triode meets FB through another switch, and FB connects sampling holding capacitor to ground, this two
A switch is controlled by same narrow spaces clock cycle signal, is synchronized and is opened and turn off.
It please refers to shown in Fig. 2 and Fig. 3, the opto-coupled feedback circuit of low-power consumption of the invention includes electro-optical feedback triode, electricity
R, switch K1, switch K2 and sampling holding capacitor C are hindered, the collector of electro-optical feedback triode is through K1 connecting resistance R to chip interior
Power vd D, the collector of the electro-optical feedback triode also pass through K2 and meet FB, and FB connects the upper end of sampling holding capacitor C, and C's is another
End ground connection, K1 and K2 are controlled by same clock cycle signal CP, are synchronized and open and turn off.
The working principle of the present embodiment is: when optocoupler works normally, clock cycle signal CP controls K1 and K2 with certain
Frequency, pulsewidth are sampled, and when K1 and K2 is opened simultaneously, the collector voltage of the electro-optical feedback triode samples capacitor
On C, the capacitance of capacitor C and the circuit are adapted, and when K1 and K2 is simultaneously turned off, capacitor C keeps the photoelectricity sampled anti-
The collector voltage of triode is presented, therefore, the average current of opto-coupled feedback circuit consumption is (VDD-FB)/100 × R, is dropped to
Traditional opto-coupled feedback circuit consumes 1 the percent of average power supply, this part Overall Power Consumption relevant to the electric current also falls below
1 the percent of traditional structure.
In a kind of specific embodiment, the sample frequency that clock cycle signal CP controls K1 and K2 is 10kHz, samples arteries and veins
Width is 1us.
Using the opto-coupled feedback circuit structure with low-power consumption in the invention, due to indirectly in its feedback end and ground
Have a holding unit, the presence of the unit significantly reduces the average current of opto-coupled feedback circuit consumption, i.e., with the electric current
This relevant part Overall Power Consumption, circuit overall structure is simple, using conveniently, can be applied in various Switching Power Supplies, is applicable in
In large-scale promotion application.
In this description, the present invention is described with reference to its specific embodiment.But it is clear that can still make
Various modifications and alterations are without departing from the spirit and scope of the invention.Therefore, the description and the appended drawings should be considered as illustrative
And not restrictive.
Claims (6)
1. a kind of opto-coupled feedback circuit structure with low-power consumption, which is characterized in that the circuit structure includes electro-optical feedback
The collector of triode, resistance R, switch K1, switch K2 and sample holding unit, the electro-optical feedback triode passes sequentially through
Switch K1, resistance R are connected to chip interior power vd D, and the collector of the electro-optical feedback triode also passes through switch K2 company
It is connected to feedback end, feedback end is connected to the first end of sample holding unit, the second end ground connection of sample holding unit.
2. the opto-coupled feedback circuit structure according to claim 1 with low-power consumption, which is characterized in that the switch K1
It is controlled with switch K2 by same signal.
3. the opto-coupled feedback circuit structure according to claim 2 with low-power consumption, which is characterized in that the signal is
Clock cycle signal.
4. the opto-coupled feedback circuit structure according to claim 3 with low-power consumption, which is characterized in that the clock week
The sample frequency of phase signal is the definite value of a systemic presupposition.
5. the opto-coupled feedback circuit structure according to claim 3 with low-power consumption, which is characterized in that the clock week
Phase signal sampling pulsewidth is the definite value of a systemic presupposition.
6. the opto-coupled feedback circuit structure according to claim 1 with low-power consumption, which is characterized in that the sampling is protected
Holding unit is capacitor C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611077000.7A CN106533132B (en) | 2016-11-29 | 2016-11-29 | Opto-coupled feedback circuit structure with low-power consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611077000.7A CN106533132B (en) | 2016-11-29 | 2016-11-29 | Opto-coupled feedback circuit structure with low-power consumption |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106533132A CN106533132A (en) | 2017-03-22 |
| CN106533132B true CN106533132B (en) | 2019-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611077000.7A Active CN106533132B (en) | 2016-11-29 | 2016-11-29 | Opto-coupled feedback circuit structure with low-power consumption |
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| CN (1) | CN106533132B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107453881A (en) * | 2017-08-08 | 2017-12-08 | 博为科技有限公司 | A kind of bypass circuit and PSE device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201450323U (en) * | 2009-04-22 | 2010-05-05 | 南京优倍电气有限公司 | Resistance input/output type safety barrier |
| CN101725416A (en) * | 2008-10-20 | 2010-06-09 | 徐州重型机械有限公司 | Throttle control circuit, crane and control method of multi-throttle device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE602006012613D1 (en) * | 2006-01-30 | 2010-04-15 | Infineon Technologies Ag | Control circuit for a switching power supply, associated method, and corresponding computer program |
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2016
- 2016-11-29 CN CN201611077000.7A patent/CN106533132B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725416A (en) * | 2008-10-20 | 2010-06-09 | 徐州重型机械有限公司 | Throttle control circuit, crane and control method of multi-throttle device |
| CN201450323U (en) * | 2009-04-22 | 2010-05-05 | 南京优倍电气有限公司 | Resistance input/output type safety barrier |
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| CN106533132A (en) | 2017-03-22 |
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