CN208158209U - A kind of circuit structure of low standby power loss charger - Google Patents
A kind of circuit structure of low standby power loss charger Download PDFInfo
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- CN208158209U CN208158209U CN201820599252.4U CN201820599252U CN208158209U CN 208158209 U CN208158209 U CN 208158209U CN 201820599252 U CN201820599252 U CN 201820599252U CN 208158209 U CN208158209 U CN 208158209U
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- 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
Abstract
The utility model discloses a kind of circuit structure of low standby power loss charger, including charging circuit, it is provided with X capacitor discharge circuit, current detection circuit and delay circuit on the charging circuit, is additionally provided with wake-up switch on the charging circuit.The utility model uses X capacitor discharge circuit, does not need to reduce the loss due to having used X capacitor discharge resistance using X capacitor discharge resistance, and by current detection circuit real-time detection charging current, when charging current is less than 65mA, circuit enters standby mode；Power consumption is less than 5mW when the utility model is standby, when recharging next time, needs to press wake-up switch, no longer needs to a charger and plug from socket, circuit charges to mobile phone again；The utility model output has delay circuit, and the 2-5S that can be delayed is output and then enter low standby mode, and the utility model structure is simple, easy to operate, easy to use, energy conservation and environmental protection.
Description
Technical field
The utility model relates to the field of circuit technology of charger, in particular to a kind of low standby power loss charges
The circuit structure of device.
Background technique
Phone charger, because being the most commonly used electronic product in the whole world the reason of mobile phone, the electricity consumption of intelligent machine increases
Add, each mobile phone charges daily under routine, and most of is all to charge at night, but the practical time really charged is only
There are 2 hours, other time is all standby mode.
With regard to the national standard in China, the power consumption of standby mode is gradually reduced, and the power consumption of standby mode in 2012 is down to from 0.5W
0.3W, until 2016 are down to 0.15W；
By the way of star mark, five-star is 0.03W for European Union, and four-star is 0.15W.
Possessing mobile phone amount in China is about 1,000,000,000, wherein probably has 200,000,000 phone charger being powered always, daily
Stand-by time is about 20 hours, and the national standard by the power consumption of China's standby status of mobile phone is about 0.15W to calculate, annual standby
Loss for 200,000,000 * 0.15W*20h*365 days=2.19 hundred million kilowatts/when electricity；Such as using stand-by power consumption down to the charger of 5mW, i.e.,：
200000000 * 5mW*20h*365 days=0.16 hundred million kilowatts/when electricity；Comparison can save 2.19-0.16=2.03 hundred million kilowatts/when electricity.
Drawbacks described above is worth improving.
Summary of the invention
In order to overcome the shortcomings of existing technology, the utility model provides a kind of circuit knot of low standby power loss charger
Structure.
Technical solutions of the utility model are as described below：
A kind of circuit structure of low standby power loss charger, including charging circuit are provided with X capacitor on the charging circuit
Discharge circuit, current detection circuit and delay circuit are additionally provided with wake-up switch on the charging circuit,
The charging circuit includes power supply input circuit, EMC circuit, rectification circuit, filter circuit, pwm control circuit, change
Transformer circuits and DC output circuit, the power supply input circuit, the EMC circuit, the rectification circuit, the filtered electrical
Road, the pwm control circuit, the transformer circuit and the DC output circuit are sequentially connected,
The X capacitor discharge circuit is provided between the power supply input circuit and the EMC circuit, the X capacitor is put
Circuit is connect with the delay circuit and wake-up switch respectively, and the wake-up switch is connect with the delay circuit,
The delay circuit is connect with the current detection circuit and the pwm control circuit respectively, the electric current inspection
Slowdown monitoring circuit is connect with the DC output circuit.
Further, the charging circuit includes processing chip IC 3, and the processing chip IC 3 is provided with VCC lead, CL
Lead, GND lead, OUT lead, VGD lead, IS lead, VDD1 lead, LS lead, VIN lead, NONE lead, NOEN draw
Line, GND lead, VDD2 lead, OFF lead, SO lead and FB lead,
The X capacitor discharge circuit includes resistance R300, resistance R301, resistance R302, resistance R320, resistance R321；Two
Pole pipe D7 and diode D6；Capacitor C320, terminals A and terminals B are connect with the power supply input circuit,
The terminals A is connect with the one end resistance R300 and diode D6 anode respectively, and the resistance R300 other end is successively
Connect after the resistance R301, the resistance R302 with the one end capacitor C320, the capacitor C320 other end respectively with ground line
Terminals DC_N and GND lead connection,
320 other end of resistance is connect with the LS lead,
The terminals B connects diode D7 anode, diode D7 cathode respectively with diode D6 cathode and resistance R321
One end connection, the resistance R321 other end are connect with the VIN lead.
Further, the current detection circuit includes amplifier IC34B and resistance RF3, resistance R325 and resistance
RFB；Resistance RB, resistance RF1, resistance RF2, capacitor E321, pressure stabilizing IC17,
The positive input of the amplifier IC34B is connect with the one end the resistance RF3, the resistance RF3 other end respectively with power supply
The end power supply VOUT- and the connection of the one end resistance RFB, the resistance RFB other end are connect with ground terminal,
The negative input of the amplifier IC34B is connect with 0.012V voltage,
The output end of the amplifier IC34B is connect by the resistance R325 with terminals F,
Resistance RB mono- terminate supply voltage VOUT+, the resistance RB other end respectively with pressure stabilizing IC17,2.5V voltage, resistance RF1
The anode connection of one end and capacitor E321,
The resistance RF1 other end is connect with 0.012V voltage and the one end resistance RF2 respectively, the resistance RF2 other end, capacitor
E321 cathode and pressure stabilizing IC17 grounding terminal.
Further, the delay circuit includes resistance R322, resistance R34 9, capacitor C321, capacitor C322 and photosynthetic
Coupler IC20,
VDD2 lead is connect with the one end resistance R322 and the one end capacitor C321 respectively, the resistance R322 other end respectively with electricity
Hinder the one end R349, the one end capacitor R322, OFF lead, wake-up switch one end terminals D and the IC20 connection of photosynthetic coupling device, electricity
Hinder the R349 other end, the capacitor R321 other end, the capacitor R322 other end, the OFF lead, wake-up switch other end terminals E
And the third pin of photosynthetic coupling device IC20 is grounded terminals DC_N.
Further, the terminals F is connect with the first pin of photosynthetic coupling device IC20.
Further, the voltage detecting circuit is additionally provided on the DC output circuit.
Further, the voltage detecting circuit is connect by feedback control with the pwm control circuit.
According to the utility model of above scheme, the beneficial effect is that, the utility model uses X capacitor discharge circuit,
It does not need to reduce the loss due to having used X capacitor discharge resistance using X capacitor discharge resistance, passes through current detection circuit
Real-time detection charging current, when charging current is less than 65mA, charging circuit enters standby mode；The utility model output, which has, prolongs
When circuit, the 2-5S that can be delayed is output and then enter low standby mode, after carrying out standby mode, stand-by power consumption can maximum be no more than
5mW, the utility model structure is simple, easy to operate, easy to use, energy conservation and environmental protection.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is EMC filter circuit schematic diagram in the utility model.
Fig. 3 is X capacitor discharge circuit diagram in the utility model.
Fig. 4 is that circuit diagram is made in the division of labor in the middle part of the utility model.
Fig. 5 is delay circuit schematic diagram in the utility model.
Fig. 6 is current detection circuit schematic diagram in the utility model.
Specific embodiment
With reference to the accompanying drawing and the utility model is further described in embodiment：
As shown in figures 1 to 6, a kind of circuit structure of low standby power loss charger, including charging circuit, the charging circuit
On be provided with X capacitor discharge circuit, current detection circuit and delay circuit, be additionally provided with wake-up on the charging circuit and open
It closes,
The charging circuit includes power supply input circuit, EMC circuit, rectification circuit, filter circuit, pwm control circuit, change
Transformer circuits and DC output circuit, the power supply input circuit, the EMC circuit, the rectification circuit, the filtered electrical
Road, the pwm control circuit, the transformer circuit and the DC output circuit are sequentially connected, on the DC output circuit
It is additionally provided with the voltage detecting circuit, the voltage detecting circuit is connect by feedback control with the pwm control circuit.
The X capacitor discharge circuit is provided between the power supply input circuit and the EMC circuit, the X capacitor is put
Circuit is connect with the delay circuit and wake-up switch respectively, and the wake-up switch is connect with the delay circuit,
The delay circuit is connect with the current detection circuit and the pwm control circuit respectively, the electric current inspection
Slowdown monitoring circuit is connect with the DC output circuit.
The charging circuit includes processing chip IC 3, and the processing chip IC 3 is provided with VCC lead, CL lead, GND and draws
Line, OUT lead, VGD lead, IS lead, VDD1 lead, LS lead, VIN lead, NONE lead, NOEN lead, GND lead,
VDD2 lead, OFF lead, SO lead and FB lead,
The X capacitor discharge circuit includes resistance R300, resistance R301, resistance R302, resistance R320, resistance R321；Two
Pole pipe D7 and diode D6；Capacitor C320, terminals A and terminals B are connect with the power supply input circuit.
Terminals A is connect with the one end resistance R300 and diode D6 anode respectively, and the resistance R300 other end successively passes through
Connect after resistance R301, resistance R302 with the one end capacitor C320, the capacitor C320 other end respectively with ground line terminals DC_N with
And the connection of GND lead,
320 other end of resistance is connect with LS lead,
Terminals B connects diode D7 anode, diode D7 cathode respectively with diode D6 cathode and the one end resistance R321
Connection, the resistance R321 other end are connect with VIN lead.
The current detection circuit includes amplifier IC34B and resistance RF3, resistance R325 and resistance RFB；Resistance
RB, resistance RF1, resistance RF2, capacitor E321, pressure stabilizing IC17,
The positive input of the amplifier IC34B is connect with the one end the resistance RF3, the resistance RF3 other end respectively with power supply
The end power supply VOUT- and the connection of the one end resistance RFB, the resistance RFB other end are connect with ground terminal,
The negative input of the amplifier IC34B is connect with 0.012V voltage,
The output end of the amplifier IC34B is connect by resistance R325 with terminals F,
Resistance RB mono- terminate supply voltage VOUT+, the resistance RB other end respectively with pressure stabilizing IC17,2.5V voltage, resistance RF1
The anode connection of one end and capacitor E321,
The resistance RF1 other end is connect with 0.012V voltage and the one end resistance RF2 respectively, the resistance RF2 other end and capacitor
E321 cathode and pressure stabilizing IC17 grounding terminal.
The delay circuit includes resistance R322, resistance R34 9, capacitor C321, capacitor C322 and photosynthetic coupling device
IC20,
VDD2 lead is connect with the one end resistance R322 and the one end capacitor C321 respectively, the resistance R322 other end respectively with electricity
Hinder the one end R349, the one end capacitor R322, OFF lead, wake-up switch one end terminals D and the IC20 connection of photosynthetic coupling device, electricity
Hinder the R349 other end, the capacitor R321 other end, the capacitor R322 other end, OFF lead, wake-up switch other end terminals E and
The third pin of photosynthetic coupling device IC20 is grounded terminals DC_N.
The terminals F is connect with the first pin of photosynthetic coupling device IC20.
Terminals A, terminals B in Fig. 2 are connected with terminals A, the terminals B in Fig. 3；Terminals P+ in Fig. 3
It is connected with the terminals P+ in Fig. 4, the terminals F in Fig. 5 is connected with the terminals F in Fig. 6.
Fig. 2 is conventional EMC filter circuit, and inductance L4 is that common mode inductance inhibits common mode interference, capacitor C8 and capacitor C9
Inhibit DM EMI for X capacitor；
As shown in figure 3, alternating current is processing by diode D6, diode D7 and resistance R321 in normal work amount
Chip IC 3 provides small operating current, when power-off, passes through diode D6, diode D7, resistance R321 and processing chip
IC3 is that X capacitor discharges, and ensures compliance with the safety requirement of X capacitor discharge；X capacitor discharge resistance can be saved, is reduced unloaded
Power consumption；
As shown in figure 4, power-up time delay circuit includes resistance R322, resistance R34 9 and capacitor C322 in figure, guarantee charging
Device can be exported normally when powering on, and when powering on, chip interior is charged by resistance R322 to capacitor C322（OFF lead
Voltage enters standby mode when reaching 1.27V）, adjustable by adjusting the time constant of resistance R322 and capacitor C322
Delay time；
SW is manual wake-up switch, when circuit enters standby mode, by touching this pass, by force by the electricity of OFF lead
Pressure drags down, and circuit carries out normal mode of operation；
Terminals F point is that charging current detects signal, when charging current is greater than 65mA, is exported as high level, photosynthetic coupling
Clutch IC20 conducting, the voltage of OFF lead are low level at this time, and circuit works normally；When charging current is less than 65mA, output
For low level, photosynthetic coupling device IC20 cut-off, the voltage of OFF lead is high level, and circuit carries out standby mode；
The utility model is provided with X capacitor discharge circuit, and the utility model does not need to reduce using X capacitor discharge resistance
Loss due to having used X capacitor discharge resistance, energy conservation and environmental protection；
It is provided with charging current detecting circuit, real-time detection charging current, when charging current is less than 65mA（Mobile phone is at this time
Charging has reached 98% or more）, high level is exported, charging circuit enters standby mode；When charging current is greater than 65mA, output
Low level, charging circuit enter normal operating conditions.
Output has delay circuit, and when powering on for the first time, no matter whether output end has catcher machine to charge, output is normal,
Whether charger intelligent measurement output end has mobile phone to charge, and when there is mobile phone access, charger normal work is filled for mobile phone
Electricity such as detects no mobile phone access（Or detection mobile phone has been filled with electricity）, charger delay 2-5S be output and then enter low standby mode；
The utility model is provided with wake-up switch, for connecing one in OFF pin and touching out as the effect for waking up output
GND pin is closed, low level triggering, when pressing touch-switch, the work of forced charge device is normal to export.
The utility model is not needed using X capacitor, and X capacitor is chiefly used at the both ends L, N of power supply, for filtering out differential mode
Interference, but must be in the both ends of an X capacitor safe Resistance in parallel（Discharge resistance）, when for preventing power supply line plug, by
In the capacitor charge and discharge process and cause power-line plug long charged.Safety standard regulation, the machine among working
When device power supply line is unplugged, in two seconds, the voltage (or above earth potential) of power-line plug both ends electrification is necessarily less than originally
The 30% of rated operational voltage.The resistance value size of discharge resistance is inversely proportional according to the size of X capacitor（Time constant need to be less than
1S）, such as capacitor of common 0.47uF, resistance value is approximately equal to the Europe 1/0.47Uf=2127k, under 220V alternating current, the damage of this resistance
Consumption is 220*220/2127K=0.023W.
Common charger is always held at standby mode after fully charged, and stand-by power consumption is about 0.15W;This is practical new
Type can detect charged state during the charging process automatically, and when charging is complete, charger is transferred to low standby mode automatically（It is standby
Power consumption is 5mW）, it does not need to pull charger, and low standby work is completed, it is easy to operate, it is easy to use；
When needing to charge next time, after connecting mobile phone, it is only necessary to press wake-up switch, trigger low to enter normal work in electromechanics
Operation mode, charger work normally, and charge for mobile phone.
The utility model specific workflow：
Mode 1：The utility model is powered on, the utility model 2-5S that can be delayed normally is exported, this is practical new at this time
Type can judge automatically whether output has catcher machine or mobile phone whether fully charged,
1）If not taking over machine or mobile phone having been filled with electricity, enter low standby mode after the utility model delay 2-5S；
2）If connecting not fully charged mobile phone, the utility model is determined as normal mode, the utility model bio-occlusion
Mobile phone charging；
Mode 2：The utility model bio-occlusion when the mobile phone is charging, when mobile phone charging to a certain extent, charging current can be by
It is decrescence small, when charging current is reduced to 60-120mA（Electric current can charge according to mobile phone to be determined to be finely adjusted）, this is practical new
Type can determine that mobile phone has been filled with, and the utility model circuit enters low standby mode at this time, and the standby 5mW that is lower than of complete machine is (in this reality
It applies in example, it is preferred that the utility model can determine that mobile phone has been filled with when charging current is reduced to 65mA, at this time the utility model electricity
Road enters low standby mode, and complete machine is standby lower than 5mW）；
Mode 3：When second of charging（The utility model has connected power supply）, user needs to press wake-up switch, wakes up low
Stand-by circuit is transferred to normal operating conditions, returns to mode 1.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations all should belong to the protection scope of the appended claims for the utility model.
Illustrative description is carried out to the utility model patent above in conjunction with attached drawing, it is clear that the reality of the utility model patent
It is now not subject to the restrictions described above, as long as being carried out using the method concept and technical solution of the utility model patent various
Improve, or it is not improved the conception and technical scheme of the utility model patent are directly applied into other occasions, in this reality
With in novel protection scope.
Claims (7)
1. a kind of circuit structure of low standby power loss charger, including charging circuit, which is characterized in that set on the charging circuit
It is equipped with X capacitor discharge circuit, current detection circuit and delay circuit, is additionally provided with wake-up switch on the charging circuit,
The charging circuit includes power supply input circuit, EMC circuit, rectification circuit, filter circuit, pwm control circuit, transformer
Circuit and DC output circuit, the power supply input circuit, the EMC circuit, the rectification circuit, the filter circuit, institute
Pwm control circuit, the transformer circuit and the DC output circuit is stated to be sequentially connected,
The X capacitor discharge circuit, the X capacitor discharge electricity are provided between the power supply input circuit and the EMC circuit
Road is connect with the delay circuit and wake-up switch respectively, and the wake-up switch is connect with the delay circuit,
The delay circuit is connect with the current detection circuit and the pwm control circuit respectively, the current detecting electricity
Road is connect with the DC output circuit.
2. the circuit structure of low standby power loss charger according to claim 1, which is characterized in that the charging circuit packet
Processing chip IC 3 is included, the processing chip IC 3 is provided with VCC lead, CL lead, GND lead, OUT lead, VGD lead, IS
Lead, VDD1 lead, LS lead, VIN lead, NONE lead, NOEN lead, GND lead, VDD2 lead, OFF lead, SO draw
Line and FB lead,
The X capacitor discharge circuit includes resistance R300, resistance R301, resistance R302, resistance R320, resistance R321；Diode
D7 and diode D6；Capacitor C320, terminals A and terminals B are connect with the power supply input circuit,
The terminals A is connect with the one end resistance R300 and diode D6 anode respectively, and the resistance R300 other end successively passes through
Connect after the resistance R301, the resistance R302 with the one end capacitor C320, the capacitor C320 other end respectively with ground line wiring
DC_N and GND lead connection are held,
320 other end of resistance is connect with the LS lead,
The terminals B connects diode D7 anode, diode D7 cathode respectively with diode D6 cathode and the one end resistance R321
Connection, the resistance R321 other end are connect with the VIN lead.
3. the circuit structure of low standby power loss charger according to claim 2, which is characterized in that the current detecting electricity
Road includes amplifier IC34B and resistance RF3, resistance R325 and resistance RFB；Resistance RB, resistance RF1, resistance RF2, capacitor
E321, pressure stabilizing IC17,
The positive input of the amplifier IC34B is connect with the one end the resistance RF3, the resistance RF3 other end respectively with power supply power supply
The end VOUT- and the connection of the one end resistance RFB, the resistance RFB other end are connect with ground terminal,
The negative input of the amplifier IC34B is connect with 0.012V voltage,
The output end of the amplifier IC34B is connect by the resistance R325 with terminals F,
Resistance RB mono- terminate supply voltage VOUT+, the resistance RB other end respectively with pressure stabilizing IC17,2.5V voltage, the one end resistance RF1
And the anode connection of capacitor E321,
The resistance RF1 other end is connect with 0.012V voltage and the one end resistance RF2 respectively, and the resistance RF2 other end, capacitor E321 are negative
Pole and pressure stabilizing IC17 grounding terminal.
4. the circuit structure of low standby power loss charger according to claim 3, which is characterized in that the delay circuit packet
Resistance R322, resistance R34 9, capacitor C321, capacitor C322 and photosynthetic coupling device IC20 are included,
VDD2 lead is connect with the one end resistance R322 and the one end capacitor C321 respectively, the resistance R322 other end respectively with resistance
The one end R349, the one end capacitor R322, OFF lead, wake-up switch one end terminals D and the IC20 connection of photosynthetic coupling device, resistance
The R349 other end, the capacitor R321 other end, the capacitor R322 other end, the OFF lead, wake-up switch other end terminals E with
And the third pin of photosynthetic coupling device IC20 is grounded terminals DC_N.
5. the circuit structure of low standby power loss charger according to claim 4, which is characterized in that the terminals F with
The first pin of photosynthetic coupling device IC20 connects.
6. the circuit structure of low standby power loss charger according to claim 1, which is characterized in that the DC output circuit
On be additionally provided with voltage detecting circuit.
7. the circuit structure of low standby power loss charger according to claim 6, which is characterized in that the voltage detecting electricity
Road is connect by feedback control with the pwm control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820599252.4U CN208158209U (en) | 2018-04-25 | 2018-04-25 | A kind of circuit structure of low standby power loss charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820599252.4U CN208158209U (en) | 2018-04-25 | 2018-04-25 | A kind of circuit structure of low standby power loss charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208158209U true CN208158209U (en) | 2018-11-27 |
Family
ID=64376416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820599252.4U Active CN208158209U (en) | 2018-04-25 | 2018-04-25 | A kind of circuit structure of low standby power loss charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208158209U (en) |
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2018
- 2018-04-25 CN CN201820599252.4U patent/CN208158209U/en active Active
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Effective date of registration: 20210730 Address after: 518000 floor 5, building B, industrial park, No. 42 north of East Industrial Road, Yousong community, Longhua street, Longhua District, Shenzhen, Guangdong Patentee after: Shenzhen Xincheng Zhiye Technology Co.,Ltd. Address before: 518000 1510, block a, bairuida building, the intersection of banxuegang Avenue and Beier Road, Bantian street, Longgang District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN XINCHENG ZHIYE ELECTRONIC Co.,Ltd. |