CN102594126A - Zero-loss common-grounded auxiliary and standby power supply - Google Patents
Zero-loss common-grounded auxiliary and standby power supply Download PDFInfo
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- CN102594126A CN102594126A CN2011100089990A CN201110008999A CN102594126A CN 102594126 A CN102594126 A CN 102594126A CN 2011100089990 A CN2011100089990 A CN 2011100089990A CN 201110008999 A CN201110008999 A CN 201110008999A CN 102594126 A CN102594126 A CN 102594126A
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Abstract
The invention relates to a zero-loss common-grounded auxiliary and standby power supply which is widely applied to all electronic equipment and household appliances containing switching power supplies. The zero-loss common-grounded auxiliary and standby power supply has the beneficial effect that outputs of main and auxiliary power supply systems are perfectly common-grounded because a double voltage-reducing capacitance structure is adopted in the capacitance voltage-reducing process. The defect of inherent energy consumption caused by starting the resistance voltage reducing is overcome, and the capacitance voltage reducing and the output of the main power supply system are common-grounded. The practical application in the switching power supply shows an obvious energy-saving effect. The standby energy consumption, which is to be far less than 1 watt, of the electronic equipment and household appliances is easily realized.
Description
Affiliated technical field
Patent of the present invention relates to a kind of zero loss, and (annotate: idle loss is zero; Do not comprise meritorious standby low-voltage power supply needs; This needs fully can be below 0.05W) assist double standby power (no starting resistance) altogether, this zero loss assists the standby power of holding concurrently can be widely used in all electronic equipments that contain Switching Power Supply and household electrical appliance and electric ballast etc. altogether.
Background technology
Electronic equipment and household electrical appliance etc. provide low-tension supply by Switching Power Supply.The general off-line switch flyback switch circuit that adopts, 85V～275V alternating current that electrical network is provided converts the needed DC low-voltage of electronic equipment into.Under the normal operating conditions, the loss of inverse-excitation type switch power-supply mainly comprises conduction loss and switching loss, and the loss of control circuit.
The oneself power consumption such as electronic equipment and household electrical appliance and the stand-by power consumption that contain Switching Power Supply at present are difficult to reduce; Reason has with limit:
1. under holding state, the loss of control circuit mainly shows as the loss on the starting resistance, and the loss of starting resistance directly with rectification after DC bus-bar voltage relevant with the starting resistance value.Supply integrated circuit to start after the starting resistance step-down, low-tension supply of feedback is kept enough operating currents and is formed stable operate as normal again behind the circuit start to be transformed.The circuit structure of this extensive use, the power consumption of its starting resistance account for suitable big of the oneself power consumption ratio of whole Switching Power Supply.The power consumption of general starting resistance is an example near 1 watt of .220v power-supply system: establishing starting resistance is 100 kilohms (100k), and low-tension supply is 15v., that starting resistance power consumption=UxU/R=(220x1.4-15) x (220x1.4-15)/general Switching Power Supply of 100K=0.949W. all has individual starting resistance.
Starting resistance is still continuing to participate in the energy that low-voltage power supply equates when also consumption is with startup when operate as normal or standby in addition.
For overcoming the intrinsic defective of starting resistance step-down, though a lot of new technologies are arranged for reducing the power consumption effort of Switching Power Supply, like up-to-date MC44608, AP384xG chip etc.The low idle function of batch (-type) only reduces the power consumption of starting resistance, still can't really remove starting resistance so far.
2. the power consumption of starting resistance has reduced; Under holding state, to keep stand-by circuit work (like infrared remote control and decoding circuit); Translation circuit must be worked, and switching losses such as its power tube switching loss, drive loss, magnetic core of transformer loss, output rectifying tube reverse recovery loss and buffer loss make translation circuit efficient much smaller than 0.8.
As everyone knows, its active power loss of capacitance decompression is near zero, and decompression capacitor also has power factor compensation and filter action to AC power, and capacitance decompression is the most desirable.But have fatal shortcoming capacitance decompression be can not with main power source system output common ground.The practical application of capacitance decompression in Switching Power Supply is zero.
Summary of the invention
Resistance drop pressure energy and main power source system output common ground, the power consumption of resistance is a defective.During capacitance decompression decompression capacitor and rectifier bridge operated in series connection (Fig. 1), rectifier bridge one end and AC power are straight-through, thus exchange ground can not with main power source direct current ground output common ground.Content of the present invention is to change the capacity voltage dropping circuit structure and solve the problem of removing with main power source system output common ground and voltage stabilizing didoe D3.(voltage stabilizing didoe D3 has power consumption)
The technical scheme that patent of the present invention adopted is:
(1) adopts two decompression capacitors during capacitance decompression; Two decompression capacitors and rectifier bridge ac input end be operated in series connection respectively; The power that the auxiliary standby power of holding concurrently requires is generally very little; Corresponding decompression capacitor capacity is also little (with respect to 50Hz; Have tens of kilohms between its impedance Xc=1/ ω c.Xc impedance 2x3.14x0.22u-2x3.14x1u) the rectifier bridge ac input end is no longer straight-through through decompression capacitor and AC power, rectifier bridge is exported and just is in suspended state like this, thus can with main power source system output common ground.Computer analog confirmation (Fig. 3) is feasible have been verified feasible with side circuit Fig. 2 application.
(2) decompression capacitor can be by multiplexing completion capacitance decompression of EMI power filtering capacitor and power filter.Because two decompression capacitors polyphone, its capacity of same output will double, but withstand voltage reduce to half the, so the circuit cost volume does not almost increase.(changing two 0.47u electric capacity into a filter capacitor 0.22u is example, and result of calculation can obtain the electric current of 14mA, and experimental result gets 13.8mA.The demand of enough electronic equipment accessory power supplys of this electric current and household electrical appliance standby power).The infrared remote control reception adds decoding circuit also only to be needed below several mA.
(3) the constant-current source characteristics of capacitance decompression, LED light can be contacted and do not consumed the auxiliary standby power energy of holding concurrently in the ac circuit of the auxiliary standby power of holding concurrently.
(4) capacitance decompression still is operated in 50Hz, does not have EMI to disturb.
(5) two decompression capacitors also connect two anti-phase diode D3D4, make decompression capacitor be in the work period half, and the result is that the decompression capacitor use is more safe and reliable, (side circuit tried also not hinder with two 1U/250v electrochemical capacitors, because only several mA of electric current).
(6) C3 replaces voltage stabilizing didoe D3 in ac circuit, not have the power consumption voltage stabilizing among Fig. 2.
The beneficial effect of patent of the present invention is, owing to adopt two two decompression capacitors and connect two anti-phase diode structures during capacitance decompression, can make the output perfection of primary and secondary power system altogether.Overcome the intrinsic power consumption defective of starting resistance step-down, capacitance decompression and main power source system output common ground are started the practical application of capacitance decompression in Switching Power Supply.Also reduce simultaneously electronic equipment and household electrical appliance operate as normal self power consumption (no starting resistance).Energy-saving effect is obvious.Electronic equipment and household electrical appliance standby energy consumption will become a thing that is easy to realize much smaller than one watt.And extend to national standard at present also not the restriction simple and easy power supply and small-power power such as electric ballast and charger etc.Cost is low and reliable and practical.
Description of drawings
Below in conjunction with accompanying drawing patent of the present invention is further specified.
Fig. 1 is the decompression capacitor circuit of using always
Two decompression capacitor structure auxiliary power circuits and the practical schematic diagram of main power source system with one power in Fig. 2 this patent, wherein 1.V1 is an AC power.2.D1-D9 be rectifier diode.3.C1C2 be decompression capacitor.4.C3 electric capacity of voltage regulation 5.C4C5 output filter capacitor.6.HW be three end infrared receiving terminals.7.JM decoding chip 8.R3R4 current-limiting resistance.9.HV be high pressure output.10.LV for starting low pressure source.11.CK be control signal.12.D10 be light-emitting diode.13.R1R2 be bleeder resistance.
Fig. 3 this patent is with Micro-Cap7.0 software computer analog service chart.Wherein 1.V1 is an AC power.2.D1-D8 be rectifier diode.3.C3C6 be decompression capacitor.4.C2 electric capacity of voltage regulation 5.C1C5 output filter capacitor.6.R1R4 be dummy resistance.
Claims (4)
1. double standby power (no starting resistance) is assisted in one kind zero loss (annotate: idle loss is zero, does not comprise meritorious standby low-voltage power supply needs, and these needs fully can be below 0.05W) altogether.Adopt two decompression capacitors during capacitance decompression; Operated in series connection rectifier bridge ac input end is no longer straight-through through decompression capacitor and AC power respectively for two decompression capacitors and rectifier bridge ac input end; Rectifier bridge output just is in suspended state like this, thus can with main power source system output common ground.。
2. double standby power is assisted in zero loss according to claim 1 altogether.It is characterized in that: adopt two decompression capacitors can with main power source system output common ground.
3. double standby power is assisted in zero loss according to claim 1 altogether.It is characterized in that: no starting resistance.
4. double standby power is assisted in zero loss according to claim 1 altogether.Lossless AC voltage-stabilizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100089990A CN102594126A (en) | 2011-01-17 | 2011-01-17 | Zero-loss common-grounded auxiliary and standby power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100089990A CN102594126A (en) | 2011-01-17 | 2011-01-17 | Zero-loss common-grounded auxiliary and standby power supply |
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| Publication Number | Publication Date |
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| CN102594126A true CN102594126A (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100089990A Pending CN102594126A (en) | 2011-01-17 | 2011-01-17 | Zero-loss common-grounded auxiliary and standby power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944353A (en) * | 2013-01-17 | 2014-07-23 | 常州隆辉照明科技有限公司 | High reliability bias power supply |
| CN106849700A (en) * | 2017-04-17 | 2017-06-13 | 刘明 | One kind realizes Zero-power-consumption standby switch power integrated circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88201179U (en) * | 1988-01-30 | 1988-09-07 | 全小勇 | Mini-charger |
| CN201336633Y (en) * | 2008-12-12 | 2009-10-28 | 美的集团有限公司 | Capacitor voltage reduction power supply circuit |
| CN201444619U (en) * | 2009-03-04 | 2010-04-28 | 陈勇 | Power supply unit of power-saving socket |
| CN201550034U (en) * | 2009-12-03 | 2010-08-11 | 深圳龙多电子科技有限公司 | Standby low-power-consumption capacitance voltage step-down circuit |
| CN101841951A (en) * | 2010-01-12 | 2010-09-22 | 北京星网锐捷网络技术有限公司 | LED driving circuit |
-
2011
- 2011-01-17 CN CN2011100089990A patent/CN102594126A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88201179U (en) * | 1988-01-30 | 1988-09-07 | 全小勇 | Mini-charger |
| CN201336633Y (en) * | 2008-12-12 | 2009-10-28 | 美的集团有限公司 | Capacitor voltage reduction power supply circuit |
| CN201444619U (en) * | 2009-03-04 | 2010-04-28 | 陈勇 | Power supply unit of power-saving socket |
| CN201550034U (en) * | 2009-12-03 | 2010-08-11 | 深圳龙多电子科技有限公司 | Standby low-power-consumption capacitance voltage step-down circuit |
| CN101841951A (en) * | 2010-01-12 | 2010-09-22 | 北京星网锐捷网络技术有限公司 | LED driving circuit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944353A (en) * | 2013-01-17 | 2014-07-23 | 常州隆辉照明科技有限公司 | High reliability bias power supply |
| CN106849700A (en) * | 2017-04-17 | 2017-06-13 | 刘明 | One kind realizes Zero-power-consumption standby switch power integrated circuit |
| WO2018192485A1 (en) * | 2017-04-17 | 2018-10-25 | 刘明 | Integrated circuit, for realizing zero power consumption standby, of switching power supply |
| US10897191B2 (en) | 2017-04-17 | 2021-01-19 | Ming Liu | Integrated circuit for realizing zero power consumption standby, of switching power supply |
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Application publication date: 20120718 |