CN205882809U - Charger circuit - Google Patents
Charger circuit Download PDFInfo
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- CN205882809U CN205882809U CN201620796256.2U CN201620796256U CN205882809U CN 205882809 U CN205882809 U CN 205882809U CN 201620796256 U CN201620796256 U CN 201620796256U CN 205882809 U CN205882809 U CN 205882809U
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- circuit
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- power conversion
- charger
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Abstract
The utility model provides a charger circuit, include: protection circuit, a filter circuit, rectifier circuit, peak snubber circuit, power conversion circuit, auxiliary power supply circuit, feedback circuit, controller and the 2nd filter circuit, the input end group that the protection circuit looped through a filter circuit, rectifier circuit and peak snubber circuit and power conversion circuit is connected, the output end group process of power conversion circuit auxiliary power supply circuit to the controller circuit power supply, the 2nd output end group process of power conversion circuit connect the interface that charges behind the 2nd filter circuit, connect on the 2nd filter circuit's the output feedback circuit, feedback circuit's feedback signal sends into in the controller, the output of this controller with frequency control component in the power conversion circuit links to each other. The utility model discloses a to charging circuit overall structure optimization, reduce no -load power and satisfy output stabilizing the voltage and electric current simultaneously.
Description
Technical field
This utility model relates to hardware circuit field, is specifically related to a kind of charger circuit.
Background technology
Along with becoming increasingly popular of electronic product, charger is widely used, such as Set Top Box, router, mobile phone, panel computer
It is required for supporting charger Deng equipment.Electronic devices and components self character and the restriction of technical merit at present, electronic equipment is standby
Time power consumption high, the shortcomings such as during work, audio-frequency noise is big, and the efficiency of power supply is low, cause its overall performance poor.
In recent years, along with the plaque day by day of global energy is weary, national governments are to energy problem's growing interest.European Union blue sky makes,
The star of american energy and acceptance of the bid authentication center etc. have all worked out standby energy consumption standard, perform stage by stage, and EuP instructs 2010 years entirely
Face is implemented, it is stipulated that all of electronic product standby energy consumption drops to less than 1 watt, and needs to drop to less than 0.5 watt after 2014, but
Be the mains charger output voltage used in some household electrical appliances now be all that the mains charger of fixed voltage, such as display is defeated
Go out generally 14V.Time standby, output voltage is constant, and high output voltage causes stand-by power consumption very big, causes the energy the most unrestrained
Take, cause products export to be restricted as stand-by power consumption is excessive simultaneously.
So either maintain the sustainable development of the earth for energy-conserving and environment-protective, or in order to reach the energy mark of various countries
Standard, the green power supply charger that exploitation conversion efficiency is high, stand-by power consumption is low all has and is of great significance and market prospect.
Utility model content
For defect of the prior art, this utility model provides a kind of charger circuit, to reduce no-load power loss
While export stable voltage and current.
The purpose of this utility model and solve it and technical problem is that and realize by the following technical solutions.According to this practicality
A kind of charging circuit of novel proposition, including: protection circuit, the first filter circuit, rectification circuit, peak absorbing circuit, power
Translation circuit, auxiliary power supply circuit, feedback circuit, controller and the second filter circuit；Described protection circuit passes sequentially through first
Filter circuit, rectification circuit and peak absorbing circuit are connected with the input group of power conversion circuit；Described power conversion circuit
The first outfan group power to described controller circuitry through described auxiliary power supply circuit；The second of described power conversion circuit
Outfan group connects charging inlet after described second filter circuit；The outfan of described second filter circuit connects institute
State feedback circuit；The feedback signal of described feedback circuit is sent in described controller, the outfan of this controller and described power
Power conditioning component in translation circuit is connected.
The purpose of this utility model and solve its technical problem and also can be applied to the following technical measures to achieve further.
Optionally, aforesaid charger circuit, described protection circuit includes electric fuse and lightning surge protection circuit, passes through
Protection circuit can realize over-voltage over-current protection and make charger trouble free service.
Optionally, aforesaid charger circuit, described first filter circuit is EMI filter circuit, including choking-winding L1
With choking-winding L2, between choking-winding L1 and choking-winding L2, it is parallel with capacity cell and resistive element.
Optionally, aforesaid charger circuit, described rectification circuit is full bridge rectifier, in the output of this rectification circuit
End parallel join has filter capacitor C1.
Optionally, aforesaid charger circuit, described power conversion circuit includes transformator, the output of described rectification circuit
Power supply signal is loaded on one end of this transformer, the other end of this transformer and the leakage of metal-oxide-semiconductor Q1
Pole connects, and the source electrode of metal-oxide-semiconductor Q1 receives the power control signal of controller through resistance R17 ground connection, the grid of metal-oxide-semiconductor Q1,
Connecting between drain electrode and the source electrode of metal-oxide-semiconductor Q1 and have electric capacity C7, transformator the first secondary coil is as the first of power conversion circuit
Outfan group, transformator second subprime coil is as the second outfan group of power conversion circuit.
Optionally, aforesaid charger circuit, described peak absorbing circuit includes electric capacity C6, and one end of electric capacity C6 is with described
One end of transformer connects, and another termination of electric capacity C6 connects the negative pole of diode D6 through resistance R14, diode D6's
Positive pole connects the other end of described transformer, is also parallel with resistance R6, resistance R7 and resistance R8 on electric capacity C6.
Optionally, aforesaid charger circuit, described auxiliary power supply circuit includes resistance R13, diode D5, voltage stabilizing two pole
Pipe ZD1 and Zener diode D1, one end of described transformator the first secondary coil after resistance R13 and diode D5 with control
The power input VCC of device connects, at the power input VCC of controller the most successively through Zener diode ZD1 and voltage stabilizing two pole
Ground connection after pipe D1, the other end ground connection of described transformator the first secondary coil.
Optionally, aforesaid charger circuit, described second filter circuit includes that what resistance R20 and electric capacity C8 constituted connects
Filter circuit, the LC filtered electrical that the parallel filtering circuit of resistance R26 and electric capacity C9 composition and inductance L3 and electric capacity C11 are constituted
Road, is parallel with Zener diode D7 on series filtering circuit.
Optionally, aforesaid charger circuit, described feedback circuit include being serially connected to charging inlet positive terminal and
The reference voltage end of resistance R25 and resistance R24 between negative pole end, the common port of resistance R25 Yu R24 and controllable accurate source of stable pressure U3
Connecting, the plus earth of described controllable accurate source of stable pressure U3, the negative pole of controllable accurate source of stable pressure U3 meets the two of photoelectrical coupler U2
Pole tube cathode, the diode anode of photoelectrical coupler U2 connects the input of inductance L3 through resistance R21, by photoelectrical coupler U2 to
Described controller provides feedback signal FB, and described pwm chip controls metal-oxide-semiconductor Q1 according to photoelectrical coupler U2 feedback information FB
Grid realizes admittance, thus realizes controlling power conversion circuit output.
By technique scheme, charger of the present utility model at least has the advantage that
The power being charged equipment output can be detected at any time, by feedback circuit, circuit is adjusted, should
Adjustment can protection circuit to output current/voltage carry out control in various degree, it is ensured that charger will not because of charging current,
Voltage is excessive and causes damage, by charging circuit optimized integral structure, reduces no-load power and meets the stable electricity of output simultaneously
Current voltage.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and can be practiced according to the content of description, below with preferred embodiment of the present utility model, and coordinate accompanying drawing detailed
Describe in detail bright.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to specifically
In embodiment or description of the prior art, the required accompanying drawing used is briefly described.In all of the figs, similar element
Or part is typically by the reference mark being similar to.In accompanying drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 shows that charger circuit structural diagrams of the present utility model is intended to；
Fig. 2 shows protection circuit of the present utility model, the first filter circuit and the circuit diagram of rectification circuit；
Fig. 3 shows peak absorbing circuit of the present utility model, power conversion circuit, auxiliary power supply circuit and controller
Circuit diagram；
Fig. 4 shows this feedback circuit of the present utility model and the circuit diagram of the second filter circuit.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical solutions of the utility model are described in detail.Hereinafter implement
Example is only used for clearly illustrating technical scheme, is therefore intended only as example, and can not limit this with this
Bright protection domain.
As it is shown in figure 1, a kind of charger that an embodiment of the present utility model proposes, mainly include with lower part: protect
Protection circuit, the first filter circuit, rectification circuit, peak absorbing circuit, power conversion circuit, auxiliary power supply circuit, feedback circuit,
Controller and the second filter circuit；Described protection circuit passes sequentially through the first filter circuit, rectification circuit and peak absorbing circuit
It is connected with the input group of power conversion circuit；First outfan group of described power conversion circuit is through described auxiliary power supply electricity
Described in road direction, controller circuitry is powered；Second outfan group of described power conversion circuit connects after described second filter circuit
Connect charging inlet；The outfan of described second filter circuit connects described feedback circuit；The feedback letter of described feedback circuit
Number sending in described controller, the outfan of this controller is connected with the power conditioning component in described power conversion circuit.
As in figure 2 it is shown, it is also preferred that the left this utility model embodiment proposes a kind of charger circuit, compared with above-described embodiment,
The protection circuit of the present embodiment includes electric fuse and lightning surge protection circuit, electric fuse F1 and overcurrent protection resistance RT1 series connection
In mouth one end, mains electricity input end, overvoltage protection resistance RV1 is connected in parallel on mouth two ends, mains electricity input end；Described overcurrent protection resistance RT1
Interacting with overvoltage protection resistance RV1 and circuit carries out over-current over-voltage protection, described electric fuse primarily serves a temperature and protects
Protect effect, prevent the too high initiation fire of charger temperature.
Civil power carries out the first time Filtering Processing of the first filter circuit after protection circuit, and described first filter circuit is
EMI filter circuit, including choking-winding L1 and choking-winding L2, is parallel with electric capacity between choking-winding L1 and choking-winding L2
Element and resistive element, described resistive element includes resistance RX1 and resistance RX2, and described capacity cell is electric capacity CX1, resistance RX1
Being connected in parallel on the outfan of described choking-winding L1 with resistance RX2 after connecting, described electric capacity CX1 is connected in parallel on described choking-winding L1's
Outfan.
After signal of telecommunication Filtering Processing for the first time, rectification circuit carries out rectification, and described rectification circuit is full bridge rectifier,
The outfan parallel join of this rectification circuit has filter capacitor C1.Alternating current rectification is pulsating direct current electric current by rectifier bridge DB1,
The electromagnetic interference that described electric capacity C1 can effectively suppress input to introduce.
As it is shown on figure 3, the power supply signal of above-mentioned rectification circuit output carries out peak absorbing, spike through peak absorbing circuit
Absorbing circuit includes that electric capacity C6, one end of electric capacity C6 are connected with one end of described transformer, the other end of electric capacity C6
Connecing the negative pole meeting diode D6 through resistance R14, the positive pole of diode D6 connects the other end of described transformer, at electric capacity
Resistance R6, resistance R7 and resistance R8 also it is parallel with on C6.
The signal of telecommunication is through peak absorbing circuit ingoing power translation circuit, and described power conversion circuit includes transformator, whole
The power supply signal of current circuit output is loaded on one end of this transformer after peak absorbing circuit, this transformator
The other end of primary coil is connected with the drain electrode of metal-oxide-semiconductor Q1, and the source electrode of metal-oxide-semiconductor Q1 is through resistance R17 ground connection, the grid of metal-oxide-semiconductor Q1
Pole receives the power control signal of controller, and connecting between the drain electrode and source electrode of metal-oxide-semiconductor Q1 has electric capacity C7, and transformator is for the first time
Level coil is as the first outfan group of power conversion circuit, and transformator second subprime coil is as the second of power conversion circuit
Outfan group.
First secondary coil of power conversion circuit is auxiliary power supply electricity as the first outfan group of power conversion circuit
Road provides power supply, and auxiliary power supply circuit includes resistance R13, diode D5, Zener diode ZD1 and Zener diode D1, described
One end of transformator the first secondary coil power input VCC with controller after resistance R13 and diode D5 is connected,
The power input VCC of controller ground connection after Zener diode ZD1 and Zener diode D1, described transformator first the most successively
The other end ground connection of secondary coil, thus power for controller.
As shown in Figure 4, described second filter circuit includes the series filtering circuit that resistance R20 and electric capacity C8 is constituted, resistance
The LC filter circuit that the parallel filtering circuit of R26 and electric capacity C9 composition and inductance L3 and electric capacity C11 are constituted, at series filtering electricity
Zener diode D7 it is parallel with on road.
Feedback circuit includes being serially connected to resistance R25 and resistance R24 between the positive terminal of charging inlet and negative pole end, electricity
The common port of resistance R25 with R24 is connected with the reference voltage end of controllable accurate source of stable pressure U3, and described controllable accurate source of stable pressure U3 is just
Pole ground connection, the negative pole of controllable accurate source of stable pressure U3 connects the diode cathode of photoelectrical coupler U2, the diode of photoelectrical coupler U2
Anode connects the input of inductance L3 through resistance R21, provides feedback signal FB by photoelectrical coupler U2 to described controller.
After controller receives feedback signal FB, pwm chip is analyzed processing, and comes according to the change of feedback information
The Voltage Pulse Width of modulation control pwm chip, thus control the power conditioning component metal-oxide-semiconductor grid in power conversion circuit
Pole, controls metal-oxide-semiconductor ON time, thus realizes switching the control to power conversion circuit output, control power conversion circuit merit
Rate exports.
The above, be only preferred embodiment of the present utility model, not this utility model is made any in form
Restriction, although this utility model is disclosed above with preferred embodiment, but is not limited to this utility model, any ripe
Know professional and technical personnel, in the range of without departing from technical solutions of the utility model, when in the technology of available the disclosure above
Hold and make a little change or be modified to the Equivalent embodiments of equivalent variations, as long as without departing from technical solutions of the utility model
Hold, any simple modification, equivalent variations and modification above example made according to technical spirit of the present utility model, the most still
Belong in the range of technical solutions of the utility model.
Claims (9)
1. a charger circuit, it is characterised in that including: protection circuit, the first filter circuit, rectification circuit, peak absorbing
Circuit, power conversion circuit, auxiliary power supply circuit, feedback circuit, controller and the second filter circuit；
Described protection circuit passes sequentially through the defeated of the first filter circuit, rectification circuit and peak absorbing circuit and power conversion circuit
Enter end group to connect；
First outfan group of described power conversion circuit is powered to described controller circuitry through described auxiliary power supply circuit；
Second outfan group of described power conversion circuit connects charging inlet after described second filter circuit；
The outfan of described second filter circuit connects described feedback circuit；
The feedback signal of described feedback circuit is sent in described controller, the outfan of this controller and described power conversion circuit
In power conditioning component be connected.
Charger circuit the most according to claim 1, it is characterised in that described protection circuit includes electric fuse and thunderbolt wave
Gush protection circuit.
Charger circuit the most according to claim 1, it is characterised in that described first filter circuit is EMI filter circuit,
Including choking-winding L1 and choking-winding L2, between choking-winding L1 and choking-winding L2, it is parallel with capacity cell and resistance unit
Part.
Charger circuit the most according to claim 1, it is characterised in that described rectification circuit is full bridge rectifier,
The outfan parallel join of this rectification circuit has filter capacitor C1.
Charger circuit the most according to claim 1, it is characterised in that described power conversion circuit includes transformator, institute
The power supply signal stating rectification circuit output is loaded on one end of this transformer, another of this transformer
End is connected with the drain electrode of metal-oxide-semiconductor Q1, and the source electrode of metal-oxide-semiconductor Q1 receives controller through resistance R17 ground connection, the grid of metal-oxide-semiconductor Q1
Power control signal, connects between the drain electrode and source electrode of metal-oxide-semiconductor Q1 and has electric capacity C7, and transformator the first secondary coil is as power
First outfan group of translation circuit, transformator second subprime coil is as the second outfan group of power conversion circuit.
Charger circuit the most according to claim 5, it is characterised in that described peak absorbing circuit includes electric capacity C6, electricity
The one end holding C6 is connected with one end of described transformer, and another termination of electric capacity C6 meets diode D6 through resistance R14
Negative pole, the positive pole of diode D6 connects the other end of described transformer, is also parallel with resistance R6, electricity on electric capacity C6
Resistance R7 and resistance R8.
Charger circuit the most according to claim 5, it is characterised in that described auxiliary power supply circuit include resistance R13, two
Pole pipe D5, Zener diode ZD1 and Zener diode D1, one end of described transformator the first secondary coil through resistance R13 and
After diode D5, the power input VCC with controller is connected, at the power input VCC of controller the most successively through voltage stabilizing two pole
Ground connection after pipe ZD1 and Zener diode D1, the other end ground connection of described transformator the first secondary coil.
Charger circuit the most according to claim 5, it is characterised in that described second filter circuit include resistance R20 with
The series filtering circuit that electric capacity C8 is constituted, the parallel filtering circuit of resistance R26 and electric capacity C9 composition and inductance L3 and electric capacity C11
The LC filter circuit constituted, is parallel with Zener diode D7 on series filtering circuit.
Charger circuit the most according to claim 8, it is characterised in that described feedback circuit includes being serially connected to charging
Resistance R25 and resistance R24 between positive terminal and the negative pole end of interface, the common port of resistance R25 Yu R24 and controllable accurate source of stable pressure
The reference voltage end of U3 connects, and the plus earth of described controllable accurate source of stable pressure U3, the negative pole of controllable accurate source of stable pressure U3 connects light
The diode cathode of electric coupler U2, the diode anode of photoelectrical coupler U2 connects the input of inductance L3 through resistance R21, passes through
Photoelectrical coupler U2 provides feedback signal FB to described controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620796256.2U CN205882809U (en) | 2016-07-26 | 2016-07-26 | Charger circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620796256.2U CN205882809U (en) | 2016-07-26 | 2016-07-26 | Charger circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205882809U true CN205882809U (en) | 2017-01-11 |
Family
ID=57699173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620796256.2U Active CN205882809U (en) | 2016-07-26 | 2016-07-26 | Charger circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205882809U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107491002A (en) * | 2017-07-31 | 2017-12-19 | 浙江榆阳电子有限公司 | A kind of intelligence control system of electric heating quilt with idle function, Electric heating mattress and electric heating blanket |
| CN107732999A (en) * | 2017-08-29 | 2018-02-23 | 深圳天珑无线科技有限公司 | A kind of charging method, charging system and electronic equipment |
| CN107846060A (en) * | 2017-11-22 | 2018-03-27 | 深圳市助尔达电子科技有限公司 | A kind of power charging circuit |
| CN113937847A (en) * | 2021-09-18 | 2022-01-14 | 深圳拓邦股份有限公司 | Charger with software upgrading function and charger |
-
2016
- 2016-07-26 CN CN201620796256.2U patent/CN205882809U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107491002A (en) * | 2017-07-31 | 2017-12-19 | 浙江榆阳电子有限公司 | A kind of intelligence control system of electric heating quilt with idle function, Electric heating mattress and electric heating blanket |
| CN107732999A (en) * | 2017-08-29 | 2018-02-23 | 深圳天珑无线科技有限公司 | A kind of charging method, charging system and electronic equipment |
| CN107846060A (en) * | 2017-11-22 | 2018-03-27 | 深圳市助尔达电子科技有限公司 | A kind of power charging circuit |
| CN113937847A (en) * | 2021-09-18 | 2022-01-14 | 深圳拓邦股份有限公司 | Charger with software upgrading function and charger |
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