CN102510615A - Voltage-multiplying rectifying high-voltage power-supplying constant current driving circuit for serially connected LEDs (Light Emitting Diodes) - Google Patents
Voltage-multiplying rectifying high-voltage power-supplying constant current driving circuit for serially connected LEDs (Light Emitting Diodes) Download PDFInfo
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- CN102510615A CN102510615A CN2011103270494A CN201110327049A CN102510615A CN 102510615 A CN102510615 A CN 102510615A CN 2011103270494 A CN2011103270494 A CN 2011103270494A CN 201110327049 A CN201110327049 A CN 201110327049A CN 102510615 A CN102510615 A CN 102510615A
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Abstract
The invention relates to a constant current driving circuit, in particular to a voltage-multiplying rectifying high-voltage power-supplying constant current driving circuit for serially connected LEDs (Light Emitting Diodes). The constant current driving circuit is characterized by comprising an alternating-current input overvoltage over-current protection circuit, a voltage-multiplying rectifying circuit, a voltage adjusting constant current driving circuit and a current feedback control circuit, wherein the alternating-current input overvoltage over-current protection circuit is connected with the voltage-multiplying rectifying circuit; the voltage-multiplying rectifying circuit is connected with the voltage adjusting constant current driving circuit; the voltage adjusting constant current driving circuit is respectively connected with a serially connected LED array and the current feedback control circuit; and the serially connected LED array is connected with the current feedback control circuit. The constant current driving circuit provided by the invention can directly work under 220V alternating-current input voltage; the constant current driving circuit is suitable for the combined application of any LED illuminating lamps; the constant current driving circuit can be supplied with power through 220V mains supply and is a high-voltage constant current driving circuit; and compared with the present low-voltage constant current driving technology widely applied to LED illumination, the high-voltage constant current driving circuit has the advantage that an AC/DC power supply part is omitted, so that the purpose of lowering the cost is achieved.
Description
Technical field
The present invention relates to a kind of constant-current drive circuit, be specially a kind of series LED constant-current drive circuit of voltage multiplying rectifier high voltage supply.
Background technology
The low pressure constant-current drive technology of the extensive use of LED illumination at present all need increase the AC/DC module; Can not directly directly drive with the 220V civil power; So just increased the cost of LED lighting; Design a kind of can being very important by on-line operation series LED constant-current drive circuit of voltage multiplying rectifier high voltage supply under the 220V AC-input voltage increasingly high today energy-conservation the requirement.
Summary of the invention
To there being the high problem of cost in the prior art, the object of the present invention is to provide a kind of technical scheme of series LED constant-current drive circuit of the voltage multiplying rectifier high voltage supply that greatly reduces cost.
The series LED constant-current drive circuit of described voltage multiplying rectifier high voltage supply; It is characterized in that comprising exchanging and import over-voltage over-current protection circuit, voltage doubling rectifing circuit, voltage adjustment constant-current drive circuit, Current Feedback Control circuit; Exchanging the input over-voltage over-current protection circuit links to each other with voltage doubling rectifing circuit; Voltage doubling rectifing circuit links to each other with voltage adjustment constant-current drive circuit; Voltage adjustment constant-current drive circuit links to each other with series LED array, Current Feedback Control circuit respectively, and the series LED array links to each other with the Current Feedback Control circuit; Described interchange input over-voltage over-current protection circuit is made up of the piezo-resistance MY of overcurrent protection resettable fuse WHPTC and overvoltage protection; Voltage doubling rectifing circuit is made up of diode D1, diode D2 and capacitor C 1, capacitor C 2; Voltage adjustment constant-current drive circuit is made up of resistance R 1, resistance R 2 and triode Q1, capacitor C 3, current regulator diode D3; The series LED array is made up of 80 LED that series connection is provided with at least, and the Current Feedback Control circuit is made up of resistance R 3, resistance R 4 and triode Q2.
The series LED constant-current drive circuit of described voltage multiplying rectifier high voltage supply; It is characterized in that described overcurrent protection resettable fuse WHPTC one end links to each other with 220V alternating current one end; The other end of overcurrent protection resettable fuse WHPTC links to each other with the positive pole of piezo-resistance MY one end, diode D1, the negative pole of diode D2; The negative pole of diode D1 links to each other with an end of capacitor C 1, an end of resistance R 1, the collector electrode of triode Q1; The other end of piezo-resistance MY links to each other with the 220V alternating current other end, capacitor C 1 other end, capacitor C 2 one ends; The positive pole of diode D2 links to each other with the other end of capacitor C 2, the collector electrode of triode Q2, the negative pole of capacitor C 3, an end of resistance R 4, and the other end of resistance R 1 links to each other with the emitter of triode Q2, an end of resistance R 2, and the other end of resistance R 2 links to each other with the base stage of triode Q1; The emitter of triode Q1 links to each other with the positive pole of capacitor C 3, the input of current regulator diode D3; The base stage of triode Q2 links to each other with an end of resistance R 3, and the other end of resistance R 3 links to each other with the other end of resistance R 4, the negative pole of series LED array, and the positive pole of series LED array links to each other with the output of current regulator diode D3.
On-line operation of the present invention is under the 220V AC-input voltage, and circuit is made up of parts such as exchanging input over-voltage over-current protection circuit, voltage doubling rectifing circuit, voltage adjustment constant-current drive circuit, Current Feedback Control circuit; This circuit is suitable for the Combination application of any LED lighting; Can directly supply power by civil power 220V; Be the circuit that a kind of high voltage and constant current drives, reduced the power unit of AC/DC, reach the purpose that has reduced cost than the low pressure constant-current drive technology of present LED illumination extensive use.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is circuit theory diagrams of the present invention;
Among the figure: 1-exchanges the input over-voltage over-current protection circuit, 2-voltage doubling rectifing circuit, 3-voltage adjustment constant-current drive circuit, 4-series LED array, 5-Current Feedback Control circuit.
Embodiment
Below in conjunction with Figure of description the present invention is further specified:
The series LED constant-current drive circuit of voltage multiplying rectifier high voltage supply; Comprise and exchange input over-voltage over-current protection circuit 1, voltage doubling rectifing circuit 2, voltage adjustment constant-current drive circuit 3, Current Feedback Control circuit 5; Exchanging input over-voltage over-current protection circuit 1 links to each other with voltage doubling rectifing circuit 2; Voltage doubling rectifing circuit 2 links to each other with voltage adjustment constant-current drive circuit 3; Voltage adjustment constant-current drive circuit 3 links to each other with series LED array 4, Current Feedback Control circuit 5 respectively, and series LED array 4 links to each other with Current Feedback Control circuit 5.Wherein, Interchange input over-voltage over-current protection circuit 1 is made up of the piezo-resistance MY of overcurrent protection resettable fuse WHPTC and overvoltage protection; Voltage doubling rectifing circuit 2 is made up of diode D1, diode D2 and capacitor C 1, capacitor C 2; Voltage adjustment constant-current drive circuit 3 is made up of resistance R 1, resistance R 2 and triode Q1, capacitor C 3, current regulator diode D3; Series LED array 4 is made up of the LED of n at least that series connection is provided with, n >=80, and Current Feedback Control circuit 5 is made up of resistance R 3, resistance R 4 and triode Q2.
The syndeton of circuit: overcurrent protection resettable fuse WHPTC one end is imported an end with the 220V alternating current and is linked to each other; The other end of overcurrent protection resettable fuse WHPTC links to each other with the positive pole of piezo-resistance MY one end, diode D1, the negative pole of diode D2; The negative pole of diode D1 links to each other with an end of capacitor C 1, an end of resistance R 1, the collector electrode of triode Q1; The other end of piezo-resistance MY links to each other with the 220V alternating current input other end, capacitor C 1 other end, capacitor C 2 one ends; The positive pole of diode D2 links to each other with the other end of capacitor C 2, the collector electrode of triode Q2, the negative pole of capacitor C 3, an end of resistance R 4; The other end of resistance R 1 links to each other with the emitter of triode Q2, an end of resistance R 2; The other end of resistance R 2 links to each other with the base stage of triode Q1, and the emitter of triode Q1 links to each other with the positive pole of capacitor C 3, the input of current regulator diode D3, and the base stage of triode Q2 links to each other with an end of resistance R 3; The other end of resistance R 3 links to each other with the other end of resistance R 4, the negative pole end of series LED array, and the positive terminal of series LED array links to each other with the output of current regulator diode D3.
The series LED constant-current drive circuit of on-line operation of the present invention voltage multiplying rectifier high voltage supply under the 220V AC-input voltage; This circuit is suitable for the Combination application of any LED lighting; Can directly supply power by civil power 220V; Be the circuit that a kind of high voltage and constant current drives, reduced the power unit of AC/DC, reach and reduced the cost purpose than the low pressure constant-current drive technology of present LED illumination extensive use.
Claims (2)
1. the series LED constant-current drive circuit of voltage multiplying rectifier high voltage supply; It is characterized in that comprising exchanging and import over-voltage over-current protection circuit, voltage doubling rectifing circuit, voltage adjustment constant-current drive circuit, Current Feedback Control circuit; Exchanging the input over-voltage over-current protection circuit links to each other with voltage doubling rectifing circuit; Voltage doubling rectifing circuit links to each other with voltage adjustment constant-current drive circuit; Voltage adjustment constant-current drive circuit links to each other with series LED array, Current Feedback Control circuit respectively, and the series LED array links to each other with the Current Feedback Control circuit; Described interchange input over-voltage over-current protection circuit is made up of the piezo-resistance MY of overcurrent protection resettable fuse WHPTC and overvoltage protection; Voltage doubling rectifing circuit is made up of diode D1, diode D2 and capacitor C 1, capacitor C 2; Voltage adjustment constant-current drive circuit is made up of resistance R 1, resistance R 2 and triode Q1, capacitor C 3, current regulator diode D3; The series LED array is made up of 80 LED that series connection is provided with at least, and the Current Feedback Control circuit is made up of resistance R 3, resistance R 4 and triode Q2.
2. the series LED constant-current drive circuit of voltage multiplying rectifier high voltage supply according to claim 1; It is characterized in that described overcurrent protection resettable fuse WHPTC one end links to each other with 220V alternating current one end; The other end of overcurrent protection resettable fuse WHPTC links to each other with the positive pole of piezo-resistance MY one end, diode D1, the negative pole of diode D2; The negative pole of diode D1 links to each other with an end of capacitor C 1, an end of resistance R 1, the collector electrode of triode Q1; The other end of piezo-resistance MY links to each other with the 220V alternating current other end, capacitor C 1 other end, capacitor C 2 one ends; The positive pole of diode D2 links to each other with the other end of capacitor C 2, the collector electrode of triode Q2, the negative pole of capacitor C 3, an end of resistance R 4, and the other end of resistance R 1 links to each other with the emitter of triode Q2, an end of resistance R 2, and the other end of resistance R 2 links to each other with the base stage of triode Q1; The emitter of triode Q1 links to each other with the positive pole of capacitor C 3, the input of current regulator diode D3; The base stage of triode Q2 links to each other with an end of resistance R 3, and the other end of resistance R 3 links to each other with the other end of resistance R 4, the negative pole of series LED array, and the positive pole of series LED array links to each other with the output of current regulator diode D3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110327049.4A CN102510615B (en) | 2011-10-25 | 2011-10-25 | Voltage-multiplying rectifying high-voltage power-supplying constant current driving circuit for serially connected LEDs (Light Emitting Diodes) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110327049.4A CN102510615B (en) | 2011-10-25 | 2011-10-25 | Voltage-multiplying rectifying high-voltage power-supplying constant current driving circuit for serially connected LEDs (Light Emitting Diodes) |
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| Publication Number | Publication Date |
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| CN102510615A true CN102510615A (en) | 2012-06-20 |
| CN102510615B CN102510615B (en) | 2014-04-02 |
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| CN201110327049.4A Expired - Fee Related CN102510615B (en) | 2011-10-25 | 2011-10-25 | Voltage-multiplying rectifying high-voltage power-supplying constant current driving circuit for serially connected LEDs (Light Emitting Diodes) |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103874263A (en) * | 2012-12-10 | 2014-06-18 | 江苏施诺照明有限公司 | Novel LED drive power supply |
| CN107666742A (en) * | 2017-10-23 | 2018-02-06 | 江西美的贵雅照明有限公司 | LED drive circuit and light fixture |
| CN107750074A (en) * | 2017-11-06 | 2018-03-02 | 江西美的贵雅照明有限公司 | Linear constant current LED drive circuit and light fixture |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6100645A (en) * | 1998-06-23 | 2000-08-08 | Electro-Mag International, Inc. | Ballast having a reactive feedback circuit |
| CN2924996Y (en) * | 2005-11-13 | 2007-07-18 | 曾祥云 | Low-cost high-performance LED lighting circuit |
| CN201042098Y (en) * | 2006-10-27 | 2008-03-26 | 马士科技有限公司 | A current excitation and no magnetic loop feedback rectifier |
| CN201898450U (en) * | 2009-02-20 | 2011-07-13 | 黄斌 | Power converter and light-emitting diode (LED) lamp |
| CN202310211U (en) * | 2011-10-25 | 2012-07-04 | 杭州鸿德照明科技有限公司 | Series LED (light-emitting diode) constant current driving circuit of voltage-multiplying rectification high-voltage power supply |
-
2011
- 2011-10-25 CN CN201110327049.4A patent/CN102510615B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6100645A (en) * | 1998-06-23 | 2000-08-08 | Electro-Mag International, Inc. | Ballast having a reactive feedback circuit |
| CN2924996Y (en) * | 2005-11-13 | 2007-07-18 | 曾祥云 | Low-cost high-performance LED lighting circuit |
| CN201042098Y (en) * | 2006-10-27 | 2008-03-26 | 马士科技有限公司 | A current excitation and no magnetic loop feedback rectifier |
| CN201898450U (en) * | 2009-02-20 | 2011-07-13 | 黄斌 | Power converter and light-emitting diode (LED) lamp |
| CN202310211U (en) * | 2011-10-25 | 2012-07-04 | 杭州鸿德照明科技有限公司 | Series LED (light-emitting diode) constant current driving circuit of voltage-multiplying rectification high-voltage power supply |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103874263A (en) * | 2012-12-10 | 2014-06-18 | 江苏施诺照明有限公司 | Novel LED drive power supply |
| CN107666742A (en) * | 2017-10-23 | 2018-02-06 | 江西美的贵雅照明有限公司 | LED drive circuit and light fixture |
| CN107750074A (en) * | 2017-11-06 | 2018-03-02 | 江西美的贵雅照明有限公司 | Linear constant current LED drive circuit and light fixture |
| CN107750074B (en) * | 2017-11-06 | 2024-01-09 | 美智光电科技股份有限公司 | Linear constant-current LED driving circuit and lamp |
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| CN102510615B (en) | 2014-04-02 |
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