CN202524616U - Off-line constant current driver for high-power LED energy-saving lamp - Google Patents
Off-line constant current driver for high-power LED energy-saving lamp Download PDFInfo
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- CN202524616U CN202524616U CN2012201352273U CN201220135227U CN202524616U CN 202524616 U CN202524616 U CN 202524616U CN 2012201352273 U CN2012201352273 U CN 2012201352273U CN 201220135227 U CN201220135227 U CN 201220135227U CN 202524616 U CN202524616 U CN 202524616U
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Abstract
The utility model relates to an off-line constant current driver for high-power LED energy-saving lamp, effectively solving the problems of narrow wide-voltage adaptation range, imperfect protection function, vulnerability to the influence of power network fluctuations, and high production cost of the conventional drivers. The technical scheme of the driver is that, a housing and a circuit in the housing are included, and the circuit is designed in a manner that, an alternating-current power supply passes through an electromagnetic interference filter composed of a capacitor C1 and mutual inductors L1-1 and L1-2, a bridge direct-current rectifier circuit composed of diodes D1, D2, D3 and D4, a switching power supply chip IC1, a precision feedback circuit composed of a resistor R2, a resistor R3, a photoelectric coupler IC2, and a feedback integration chip IC3, a three-terminal voltage regulator IC4 and an output LED formwork U0. The off-line constant current driver is advantageous in that, the structure is simple and unique, the conversion efficiency is high, the circuit is simply and flexibly designed with high integration, the operation is convenient and the cost is low, thereby being suitable for applications in the field of light emitting device driver and providing good social and economic benefits.
Description
Technical field
The utility model relates to light source drive, particularly a kind of off-line type constant current high-power LED energy-saving lamp driver.
Background technology
In recent years; Low-carbon (LC), energy-saving and environmental protection more and more receive the attention of people's height; LED compares characteristics such as have energy-saving and environmental protection, long service life, response time are short with conventional light source, be a kind of efficient green lighting source of compliance with environmental protection requirements, is the desirable substitute of following conventional light source; The market large power white light LED is narrow as the driver adaptation wide-voltage range of luminous element at present; Defencive function is unsound and influenced by power network fluctuation bigger, adopt special integrated circuit can satisfy the LED performance requirement, but cost is higher; Because above-mentioned shortcoming causes the performance of high-power LED illuminating lamp can't satisfy the demand in market, and high performance product price costliness is difficult to promote.
Summary of the invention
To above-mentioned situation; For overcoming the defective of prior art; The purpose of the utility model just provides a kind of off-line type constant current high-power LED energy-saving lamp driver; Can effectively solving existing driver, to adapt to wide-voltage range narrow, and defencive function is unsound and influenced by power network fluctuation bigger, the problem that cost of manufacture is high.
The technical scheme of its solution is; Comprise the circuit in housing and the housing, circuit comprises switching power source chip IC1, photoelectrical coupler IC2 and transformer T, and the AC85-265V power supply connects capacitor C 1; The two ends of capacitor C 1 meet mutual inductor L1-1 respectively; L1-2, mutual inductor L1-1 connect the positive pole of diode D1 and the negative pole of diode D3 respectively, and mutual inductor L1-2 connects the anodal and diode D4 negative pole of diode D2 respectively; The negative pole of diode D1 is connected with the negative pole of diode D2; 1 pin of capacitor C 2 one ends, resistance R 1 one ends, diode VD1 one end and transformer T links to each other, and the positive pole of the positive pole of diode D3 and diode D4 connects S pin, F pin, an end of capacitor C 8, an end of capacitor C 4 and 3 pin of transformer T of the other end of capacitor C 2, switching power source chip IC1, and meets 1 pin and the adjustable resistance R of feedback integrated chip IC3 through capacitor C 7
WAn end; The other end of resistance R 1 links to each other with the M pin of switching power source chip IC1; 2 pin of diode VD1 and diode VD2 series connection transformer T and the D pin of switching power source chip IC1; The C pin of switching power source chip IC1 links to each other with an end of 2 pin of photoelectrical coupler IC2, resistance R 6, and resistance R 6 is connected with capacitor C 8, and 4 pin of transformer T link to each other with the other end of capacitor C 4 and 1 pin of photoelectrical coupler IC2 through diode D6; 3 pin of photoelectrical coupler IC2 link to each other with 2 pin of feedback integrated chip IC3, an end of capacitor C 6, an end of resistance R 3, and through the end of capacitor C 6 connecting resistance R5,3 pin, the adjustable resistance R of feedback integrated chip IC3
WThe other end, a termination LED template U of resistance R 4
0Positive pole; 3 pin of another termination three terminal regulator IC4 of resistance R 4, an end of capacitor C 5, the other end of biasing resistor R3, the other end of resistance R 5,5 pin of transformer T meet the other end, 2 pin of three terminal regulator IC4, the LED template U of an end of capacitor C 3, capacitor C 5
0Negative pole, 6 pin of transformer T connect the other end of capacitor C 3, an end of resistance R 2 and 1 pin of three terminal regulator IC4 through diode D5,4 pin of resistance R 2 another termination photoelectrical coupler IC2.
The utility model uniqueness simple in structure, conversion efficiency height, circuit design is simple, flexible, and integrated degree is high, and easy to use, cost is low, can be widely used in the illumination driver field, and good society and economic benefit are arranged.
Description of drawings
Fig. 1 is the circuit diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done further explain.
Provide by Fig. 1; The utility model comprises the circuit in housing and the housing, and circuit comprises switching power source chip IC1, photoelectrical coupler IC2 and transformer T, and the AC85-265V power supply connects capacitor C 1; The two ends of capacitor C 1 meet mutual inductor L1-1 respectively; L1-2, mutual inductor L1-1 connect the positive pole of diode D1 and the negative pole of diode D3 respectively, and mutual inductor L1-2 connects the anodal and diode D4 negative pole of diode D2 respectively; The negative pole of diode D1 is connected with the negative pole of diode D2; 1 pin of capacitor C 2 one ends, resistance R 1 one ends, diode VD1 one end and transformer T links to each other, and the positive pole of the positive pole of diode D3 and diode D4 connects S pin, F pin, an end of capacitor C 8, an end of capacitor C 4 and 3 pin of transformer T of the other end of capacitor C 2, switching power source chip IC1, and meets 1 pin and the adjustable resistance R of feedback integrated chip IC3 through capacitor C 7
WAn end; The other end of resistance R 1 links to each other with the M pin of switching power source chip IC1; 2 pin of diode VD1 and diode VD2 series connection transformer T and the D pin of switching power source chip IC1; The C pin of switching power source chip IC1 links to each other with an end of 2 pin of photoelectrical coupler IC2, resistance R 6, and resistance R 6 is connected with capacitor C 8, and 4 pin of transformer T link to each other with the other end of capacitor C 4 and 1 pin of photoelectrical coupler IC2 through diode D6; 3 pin of photoelectrical coupler IC2 link to each other with 2 pin of feedback integrated chip IC3, an end of capacitor C 6, an end of resistance R 3, and through the end of capacitor C 6 connecting resistance R5,3 pin, the adjustable resistance R of feedback integrated chip IC3
WThe other end, a termination LED template U of resistance R 4
0Positive pole; 3 pin of another termination three terminal regulator IC4 of resistance R 4, an end of capacitor C 5, the other end of biasing resistor R3, the other end of resistance R 5,5 pin of transformer T meet the other end, 2 pin of three terminal regulator IC4, the LED template U of an end of capacitor C 3, capacitor C 5
0Negative pole, 6 pin of transformer T connect the other end of capacitor C 3, an end of resistance R 2 and 1 pin of three terminal regulator IC4 through diode D5,4 pin of resistance R 2 another termination photoelectrical coupler IC2.
Described capacitor C 1, mutual inductor L1-1, L1-2 form EMI FILTER; Its input termination AC85-265V power supply; The bridge-type direct current rectification input that the output termination is made up of diode D1, D2, D3, D4, diode D1, D2 are FR106, diode D3, D4 are 1N4007.
Described resistance R 2, resistance R 3, photoelectrical coupler IC2, feedback integrated chip IC3 constitute accurate feedback circuit, and photoelectrical coupler IC2 adopts PC817, feedback integrated chip IC3 employing TL431.
Described capacitor C 6, shunt capacitance C8 and resistance R 6 constitute loop compensation circuits.
Described three terminal regulator IC4 has two, forms the expansion flow structure of parallel connection, and IC4 adopts LM7815.
Described switching power source chip IC1 adopts the TOPswitch-Fx chip.
When the utility model used, the alternating current input suppressed the electromagnetic interference and the noise signal of electrical network through the EMI FILTER that is made up of capacitor C 1, mutual inductor L1-1, L1-2, got into rectifier diode D1, D2, D3, D4 then and carried out rectifying and wave-filtering; Form rectifier bridge like this and effectively reduce the conducted noise below the 500KHz, electric current flows into the outflow of 2 pin from 1 pin of transformer T then, gets into the D end drain electrode of switching power source chip IC1; The drain electrode clamping protective circuit is made up of diode VD1 and VD2, VD1 and VD2 conducting when the D terminal voltage surpasses clamp voltage, and the D end drain electrode of playing protection switch power supply chip IC1 is not breakdown; Electric current behind over commutation is through resistance R 1 step-down in addition; Electric current flows into the M end of switching power source chip IC1, detects input voltage, realizes overvoltage and under-voltage protection; When outage; Under-voltage detection can prevent to restart automatically after the power supply output imbalance, can prevent that also filtering capacitor from slowly discharging and the interference of generation, is connecting electrical network during moment; Force when peak voltage occurring to turn-off chip, to avoid that power consumption equipment is caused breaking-up.Behind the electric current process transformer T, secondary 6 pin output process Schottky diode D5 rectification, the filtering of capacitor C 3,1 pin of entering three terminal regulator IC4,5 filtering of 3 pin output process capacitor C, resistance R 4 current limlitings, the positive pole of output led module.The output of feedback winding 4 pin is through D6 rectification and C4 filtering; For the 1 pin collector electrode of photoelectrical coupler IC2 provides bias voltage, R2 is the current-limiting resistance among the photoelectrical coupler IC2, and R3 is the biasing resistor of feedback integrated chip IC3; Make it that suitable operating current, output voltage U arranged
0Through resistance R 4, R5 dividing potential drop, the 2.5V reference voltage that obtains among sampling voltage and the feedback integrated chip IC3 compares; Produce error voltage, change output current through photoelectrical coupler IC2 again, this moment, electric current flowed into the C end of switching power source chip IC1; The time duty ratio change, and then regulate U
0Remain unchanged, C8 is the shunt capacitance of control end, the peak voltage of the C of filtering switching power source chip IC1 end, decision-making circuit restart frequency automatically, C7 is the isolation capacitance of input ground with output ground.
The utility model uniqueness simple in structure, conversion efficiency height, circuit design is simple, flexible, and integrated degree is high, and easy to use, cost is low, can be widely used in the illumination driver field, and good society and economic benefit are arranged.
Claims (5)
1. off-line type constant current high-power LED energy-saving lamp driver; Comprise the circuit in housing and the housing; It is characterized in that circuit comprises switching power source chip IC1, photoelectrical coupler IC2 and transformer T, the AC85-265V power supply connects capacitor C 1; The two ends of capacitor C 1 meet mutual inductor L1-1 respectively; L1-2, mutual inductor L1-1 connect the positive pole of diode D1 and the negative pole of diode D3 respectively, and mutual inductor L1-2 connects the anodal and diode D4 negative pole of diode D2 respectively; The negative pole of diode D1 is connected with the negative pole of diode D2; 1 pin of capacitor C 2 one ends, resistance R 1 one ends, diode VD1 one end and transformer T links to each other, and the positive pole of the positive pole of diode D3 and diode D4 connects S pin, F pin, an end of capacitor C 8, an end of capacitor C 4 and 3 pin of transformer T of the other end of capacitor C 2, switching power source chip IC1, and meets 1 pin and the adjustable resistance R of feedback integrated chip IC3 through capacitor C 7
WAn end; The other end of resistance R 1 links to each other with the M pin of switching power source chip IC1; 2 pin of diode VD1 and diode VD2 series connection transformer T and the D pin of switching power source chip IC1; The C pin of switching power source chip IC1 links to each other with an end of 2 pin of photoelectrical coupler IC2, resistance R 6, and resistance R 6 is connected with capacitor C 8, and 4 pin of transformer T link to each other with the other end of capacitor C 4 and 1 pin of photoelectrical coupler IC2 through diode D6; 3 pin of photoelectrical coupler IC2 link to each other with 2 pin of feedback integrated chip IC3, an end of capacitor C 6, an end of resistance R 3, and through the end of capacitor C 6 connecting resistance R5,3 pin, the adjustable resistance R of feedback integrated chip IC3
WThe other end, a termination LED template U of resistance R 4
0Positive pole; 3 pin of another termination three terminal regulator IC4 of resistance R 4, an end of capacitor C 5, the other end of biasing resistor R3, the other end of resistance R 5,5 pin of transformer T meet the other end, 2 pin of three terminal regulator IC4, the LED template U of an end of capacitor C 3, capacitor C 5
0Negative pole, 6 pin of transformer T connect the other end of capacitor C 3, an end of resistance R 2 and 1 pin of three terminal regulator IC4 through diode D5,4 pin of resistance R 2 another termination photoelectrical coupler IC2.
2. off-line type constant current high-power LED energy-saving lamp driver according to claim 1; It is characterized in that; Described capacitor C 1, mutual inductor L1-1, L1-2 form EMI FILTER; Its input termination AC85-265V power supply, the bridge-type direct current rectification input that the output termination is made up of diode D1, D2, D3, D4.
3. off-line type constant current high-power LED energy-saving lamp driver according to claim 1 is characterized in that, described resistance R 2, resistance R 3, photoelectrical coupler IC2, feedback integrated chip IC3 constitute accurate feedback circuit.
4. off-line type constant current high-power LED energy-saving lamp driver according to claim 1 is characterized in that, described capacitor C 6, shunt capacitance C8 and resistance R 6 constitute loop compensation circuits.
5. off-line type constant current high-power LED energy-saving lamp driver according to claim 1 is characterized in that described three terminal regulator IC4 has two, forms the expansion flow structure of parallel connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201352273U CN202524616U (en) | 2012-04-01 | 2012-04-01 | Off-line constant current driver for high-power LED energy-saving lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201352273U CN202524616U (en) | 2012-04-01 | 2012-04-01 | Off-line constant current driver for high-power LED energy-saving lamp |
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| CN202524616U true CN202524616U (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201352273U Expired - Fee Related CN202524616U (en) | 2012-04-01 | 2012-04-01 | Off-line constant current driver for high-power LED energy-saving lamp |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104602421A (en) * | 2015-02-15 | 2015-05-06 | 黄焕珠 | Multifunctional efficient power-saving long-life LED street lamp driver |
| CN104812124A (en) * | 2015-02-15 | 2015-07-29 | 黄焕珠 | Multifunctional high-efficiency power-saving LED street lamp with long service life |
| CN106655833A (en) * | 2017-03-15 | 2017-05-10 | 成都金广通科技有限公司 | Power supply filtering circuit of urban and rural cadastral information integration device on the basis of GIS (Geographic Information System) |
| TWI715350B (en) * | 2019-12-13 | 2021-01-01 | 宏碁股份有限公司 | Driving device |
-
2012
- 2012-04-01 CN CN2012201352273U patent/CN202524616U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104602421A (en) * | 2015-02-15 | 2015-05-06 | 黄焕珠 | Multifunctional efficient power-saving long-life LED street lamp driver |
| CN104812124A (en) * | 2015-02-15 | 2015-07-29 | 黄焕珠 | Multifunctional high-efficiency power-saving LED street lamp with long service life |
| CN104602421B (en) * | 2015-02-15 | 2019-03-15 | 黄焕珠 | A kind of LED street lamp driver of multifunctional efficient electricity-saving rate long-life |
| CN106655833A (en) * | 2017-03-15 | 2017-05-10 | 成都金广通科技有限公司 | Power supply filtering circuit of urban and rural cadastral information integration device on the basis of GIS (Geographic Information System) |
| TWI715350B (en) * | 2019-12-13 | 2021-01-01 | 宏碁股份有限公司 | Driving device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20150401 |
|
| EXPY | Termination of patent right or utility model |