CN105323925A - Power supply quick starting circuit - Google Patents
Power supply quick starting circuit Download PDFInfo
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- CN105323925A CN105323925A CN201510742005.6A CN201510742005A CN105323925A CN 105323925 A CN105323925 A CN 105323925A CN 201510742005 A CN201510742005 A CN 201510742005A CN 105323925 A CN105323925 A CN 105323925A
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Abstract
The invention discloses a power supply quick starting circuit with a simple structure, less components and parts, and low cost. The power supply quick starting circuit comprises a resistor R8, a resistor R9, a resistor R41, a capacitor C3, a capacitor C5, a voltage stabilizing diode ZD2, a diode D1, a diode D2, an NMOS tube Q1 and an electrolytic capacitor EC1; one end of the resistor R8 and the drain electrode of the NMOS tube are connected with rectified voltage VBUS; the other end of the resistor R8 is connected with one end of the resistor R9; the other end of the resistor R9 is connected with one end of the capacitor C3 and the grid electrode of the NMOS tube Q1; the source electrode of the NMOS tube Q1 is connected with one end of the capacitor C5 and the positive electrode of the diode D1; the negative electrode of the diode D1 is connected with one end of the resistor R10; the other end of the resistor R10, the positive electrode of the electrolytic capacitor EC1, the negative electrode of the voltage stabilizing diode ZD2 and the negative electrode of the diode D2 are connected with a power supply pin VCC of an IC; the positive electrode of the diode D2 is connected with one end of the resistor R41; and the other end of the resistor R41 is connected with the positive terminal VA of an auxiliary winding of a transformer.
Description
Technical field
The present invention relates to Power Generation Road field, particularly relate to the start-up circuit of LED power, specifically a kind of power supply fast start circuit.
Background technology
Along with the fast development of LED industry, market requires more and more faster to the start-up time of LED lamp, the light fixture having specified to enter Europe in present CE need to meet be less than 0.5S start-up time, the single-stage start-up circuit that LED power is traditional cannot meet this requirement, two-stage starts the limitation of circuit itself, it can not be made to meet whole LED power chips, and a lot of IC itself is not again containing internal high pressure start-up performance, and the new startup circuit of form active demand one meets the requirement of startup fast.
Summary of the invention
The present invention is to solve the problems referred to above that prior art exists, aim to provide a kind of structure simple, components and parts are few, the power supply fast start circuit that cost is low.
For solving the problem, the present invention by the following technical solutions: power supply starts circuit fast, comprises resistance R8, resistance R9, resistance R10, resistance R41, electric capacity C3, electric capacity C5, voltage stabilizing didoe ZD2, diode D1, diode D2, NMOS tube Q1 and electrochemical capacitor EC1, is characterized in that the drain electrode of described resistance R8 one end and NMOS tube is connected with rectified voltage VBUS, described resistance R8 other end connecting resistance R9 one end, the described resistance R9 other end with, the grid of described electric capacity C3 one end and NMOS tube Q1 connects, and the source electrode of described NMOS tube Q1 is connected with the positive pole of one end of electric capacity C5 and diode D1, and the negative pole of described diode D1 is connected with one end of resistance R10, the other end of described resistance R10, the positive pole of electrochemical capacitor EC1, the energization pins VCC that the negative pole of voltage-stabiliser tube diode ZD2 and the negative pole of diode D2 connect IC connects, the positive pole of described diode D2 is connected with resistance R41 one end, the other end and the transformer of described resistance R41 assist the anode VA of winding to be connected, the positive pole of described voltage stabilizing didoe ZD2, the other end of electric capacity C3, the other end of electric capacity C5, the negative pole of electrochemical capacitor EC1 and the equal ground connection of positive pole of voltage stabilizing didoe ZD2.
Power supply fast start circuit of the present invention, after mains switch is opened, the voltage VBUS of AC voltage after rectifier bridge is by resistance R8, resistance R9 charges to electric capacity C3, the Q1 conducting when the voltage on electric capacity C3 reaches the door capable of being opened voltage limit of NMOS tube Q1, VBUS voltage is charged to electrochemical capacitor EC1, when the voltage on electrochemical capacitor EC1 reaches the cut-in voltage of IC by NMOS tube Q1, diode D1 and resistance R10, IC starts, power work.When the voltage on electric capacity C5 be charged to make NMOS tube Q1VGS voltage lower than NMOS tube door capable of being opened voltage limit time, NMOS tube Q1 close.Electric capacity C3 is configured the very little patch capacitor of capacitance, and NMOS tube Q1 can transient switching, and design less by the resistance of resistance R10, the voltage VCC on EC1 can reach rapidly the cut-in voltage of IC simultaneously.
Visible, power supply fast start circuit of the present invention, structure is simple, and components and parts are few, with low cost, reliable, and reaches the moment quick effect started.
As improvement of the present invention, be also provided with voltage-stabiliser tube ZD1 between the grid source electrode of described NMOS tube Q1, and the described negative pole of voltage-stabiliser tube ZD1 is connected with the grid of NMOS tube Q1, the described positive pole of voltage-stabiliser tube ZD1 is connected with the source electrode of NMOS tube Q1.Voltage-stabiliser tube ZD1 can voltage on clamped electric capacity C3, prevents the voltage on electric capacity C3 from exceeding NMOS tube VGS maximum voltage thus puncturing NMOS tube.
As a further improvement on the present invention, described voltage-stabiliser tube ZD1 adopts BZT52C15 voltage-stabiliser tube.Described NMOS tube Q1 adopts TK4A60DBMOS pipe.Described voltage-stabiliser tube ZD2 adopts BZT52C20 voltage-stabiliser tube.Described diode D1 and diode D2 adopts 1N4148W diode.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Fig. 1 is the structural representation of power supply fast start circuit of the present invention.
Embodiment
With reference to Fig. 1, power supply of the present invention starts circuit fast, comprises resistance R8, resistance R9, resistance R10, resistance R41, electric capacity C3, electric capacity C5, voltage stabilizing didoe ZD1, voltage stabilizing didoe ZD2, diode D1, diode D2, NMOS tube Q1 and electrochemical capacitor EC1, the drain electrode of described resistance R8 one end and NMOS tube is connected with rectified voltage VBUS, described resistance R8 other end connecting resistance R9 one end, the described resistance R9 other end and voltage-stabiliser tube ZD1 negative pole, the grid of described electric capacity C3 one end and NMOS tube Q1 connects, and the source electrode of described NMOS tube Q1 is connected with the positive pole of one end of electric capacity C5 and diode D1, and the negative pole of described diode D1 is connected with one end of resistance R10, the other end of described resistance R10, the positive pole of electrochemical capacitor EC1, the energization pins VCC that the negative pole of voltage-stabiliser tube diode ZD2 and the negative pole of diode D2 connect IC connects, the positive pole of described diode D2 is connected with resistance R41 one end, the other end and the transformer of described resistance R41 assist the anode VA of winding to be connected, the positive pole of described voltage stabilizing didoe ZD1, the positive pole of voltage stabilizing didoe ZD2, the other end of electric capacity C3, the other end of electric capacity C5, the negative pole of electrochemical capacitor EC1 and the equal ground connection of positive pole of voltage stabilizing didoe ZD2.
Described voltage-stabiliser tube ZD1 adopts BZT52C15 voltage-stabiliser tube.Described NMOS tube Q1 adopts TK4A60DBMOS pipe.Described voltage-stabiliser tube ZD2 adopts BZT52C20 voltage-stabiliser tube.Described diode D1 and diode D2 adopts 1N4148W diode.
Operation principle of the present invention is as follows: after mains switch is opened, the voltage VBUS of AC voltage after rectifier bridge is by resistance R8, resistance R9 charges to electric capacity C3, the Q1 conducting when the voltage on electric capacity C3 reaches the door capable of being opened voltage limit of NMOS tube Q1, VBUS voltage is charged to electrochemical capacitor EC1 by NMOS tube Q1, diode D1 and resistance R10, when the voltage on electrochemical capacitor EC1 reaches the cut-in voltage of IC, IC starts, power work.When the voltage on electric capacity C5 be charged to make NMOS tube Q1VGS voltage lower than NMOS tube door capable of being opened voltage limit time, NMOS tube Q1 close.Electric capacity C3 is configured the very little patch capacitor of capacitance, and NMOS tube Q1 can transient switching, and design less by the resistance of resistance R10, the voltage VCC on EC1 can reach rapidly the cut-in voltage of IC simultaneously.Voltage-stabiliser tube ZD1 can voltage on clamped electric capacity C3, prevents the voltage on electric capacity C3 from exceeding NMOS tube VGS maximum voltage thus puncturing NMOS tube.Circuit of the present invention can accomplish that in full voltage input range being less than 0.2S opens, and easily can meet the requirement that 0.5S starts.
It is understood that above-described embodiment is just to explanation of the present invention, instead of limitation of the present invention, any innovation and creation do not exceeded in spirit of the present invention, all fall within protection scope of the present invention.
Claims (6)
1. power supply fast start circuit, comprises resistance R8, resistance R9, resistance R10, resistance R41, electric capacity C3, electric capacity C5, voltage stabilizing didoe ZD2, diode D1, diode D2, NMOS tube Q1 and electrochemical capacitor EC1, is characterized in that the drain electrode of described resistance R8 one end and NMOS tube is connected with rectified voltage VBUS, described resistance R8 other end connecting resistance R9 one end, the described resistance R9 other end with, the grid of described electric capacity C3 one end and NMOS tube Q1 connects, and the source electrode of described NMOS tube Q1 is connected with the positive pole of one end of electric capacity C5 and diode D1, and the negative pole of described diode D1 is connected with one end of resistance R10, the other end of described resistance R10, the positive pole of electrochemical capacitor EC1, the energization pins VCC that the negative pole of voltage-stabiliser tube diode ZD2 and the negative pole of diode D2 connect IC connects, the positive pole of described diode D2 is connected with resistance R41 one end, the other end and the transformer of described resistance R41 assist the anode VA of winding to be connected, the positive pole of described voltage stabilizing didoe ZD2, the other end of electric capacity C3, the other end of electric capacity C5, the negative pole of electrochemical capacitor EC1 and the equal ground connection of positive pole of voltage stabilizing didoe ZD2.
2. power supply fast start circuit as claimed in claim 1, it is characterized in that also being provided with voltage-stabiliser tube ZD1 between the grid source electrode of described NMOS tube Q1, further, the described negative pole of voltage-stabiliser tube ZD1 is connected with the grid of NMOS tube Q1, and the described positive pole of voltage-stabiliser tube ZD1 is connected with the source electrode of NMOS tube Q1.
3. power supply fast start circuit as claimed in claim 1, is characterized in that described voltage-stabiliser tube ZD1 adopts BZT52C15 voltage-stabiliser tube.
4. power supply fast start circuit as claimed in claim 1, is characterized in that described NMOS tube Q1 adopts TK4A60DBMOS pipe.
5. power supply fast start circuit as claimed in claim 1, is characterized in that described voltage-stabiliser tube ZD2 adopts BZT52C20 voltage-stabiliser tube.
6. power supply fast start circuit as claimed in claim 1, is characterized in that described diode D1 and diode D2 adopts 1N4148W diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510742005.6A CN105323925A (en) | 2015-11-04 | 2015-11-04 | Power supply quick starting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510742005.6A CN105323925A (en) | 2015-11-04 | 2015-11-04 | Power supply quick starting circuit |
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| Publication Number | Publication Date |
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| CN105323925A true CN105323925A (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510742005.6A Pending CN105323925A (en) | 2015-11-04 | 2015-11-04 | Power supply quick starting circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI622258B (en) * | 2016-10-28 | 2018-04-21 | System for quickly starting switching power supply |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102158067A (en) * | 2011-04-20 | 2011-08-17 | 广州金升阳科技有限公司 | Starting circuit for switching power supply |
| CN201956899U (en) * | 2010-11-08 | 2011-08-31 | 深圳茂硕电源科技股份有限公司 | Special circuit for accelerating start-up and LED drive circuit adopting same |
| CN102195462A (en) * | 2011-05-26 | 2011-09-21 | 广州金升阳科技有限公司 | Start-up circuit with high-tension power supply |
| CN102361402A (en) * | 2011-10-21 | 2012-02-22 | 广州金升阳科技有限公司 | Switching power supply circuit |
| CN102969782A (en) * | 2012-10-26 | 2013-03-13 | 深圳市英威腾电气股份有限公司 | Chip starting circuit |
| CN204216781U (en) * | 2014-11-29 | 2015-03-18 | 广东易事特电源股份有限公司 | A kind of Switching Power Supply start-up circuit |
| CN204425198U (en) * | 2015-02-12 | 2015-06-24 | 东莞理工学院 | A kind of power-supplying circuit |
| CN105006960A (en) * | 2015-07-29 | 2015-10-28 | 哈尔滨工业大学 | Low voltage start switch power supply |
| CN205082022U (en) * | 2015-11-04 | 2016-03-09 | 浙江榆阳电子有限公司 | Quick starting circuit of power |
-
2015
- 2015-11-04 CN CN201510742005.6A patent/CN105323925A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201956899U (en) * | 2010-11-08 | 2011-08-31 | 深圳茂硕电源科技股份有限公司 | Special circuit for accelerating start-up and LED drive circuit adopting same |
| CN102158067A (en) * | 2011-04-20 | 2011-08-17 | 广州金升阳科技有限公司 | Starting circuit for switching power supply |
| CN102195462A (en) * | 2011-05-26 | 2011-09-21 | 广州金升阳科技有限公司 | Start-up circuit with high-tension power supply |
| CN102361402A (en) * | 2011-10-21 | 2012-02-22 | 广州金升阳科技有限公司 | Switching power supply circuit |
| CN102969782A (en) * | 2012-10-26 | 2013-03-13 | 深圳市英威腾电气股份有限公司 | Chip starting circuit |
| CN204216781U (en) * | 2014-11-29 | 2015-03-18 | 广东易事特电源股份有限公司 | A kind of Switching Power Supply start-up circuit |
| CN204425198U (en) * | 2015-02-12 | 2015-06-24 | 东莞理工学院 | A kind of power-supplying circuit |
| CN105006960A (en) * | 2015-07-29 | 2015-10-28 | 哈尔滨工业大学 | Low voltage start switch power supply |
| CN205082022U (en) * | 2015-11-04 | 2016-03-09 | 浙江榆阳电子有限公司 | Quick starting circuit of power |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI622258B (en) * | 2016-10-28 | 2018-04-21 | System for quickly starting switching power supply |
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| CB03 | Change of inventor or designer information |
Inventor after: Wu Haiyan Inventor after: Yang Wu Inventor after: Yang Qingfeng Inventor after: Fang Jiemiao Inventor before: Ba Minglei Inventor before: Wu Haiyan Inventor before: Fang Jiemiao |
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Application publication date: 20160210 |
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