CN102510615B - 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 PDF

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Publication number
CN102510615B
CN102510615B CN201110327049.4A CN201110327049A CN102510615B CN 102510615 B CN102510615 B CN 102510615B CN 201110327049 A CN201110327049 A CN 201110327049A CN 102510615 B CN102510615 B CN 102510615B
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China
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voltage
circuit
resistance
current
constant current
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Expired - Fee Related
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CN201110327049.4A
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CN102510615A (en
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罗正华
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HANGZHOU HONGDE LIGHTING TECHNOLOGY Co Ltd
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HANGZHOU HONGDE LIGHTING TECHNOLOGY Co Ltd
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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

The series LED constant-current drive circuit of voltage multiplying rectifier high voltage supply
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 needs to increase AC/DC module, can not directly with 220V civil power, directly drive, so just increased the cost of LED lighting, in energy-conservation requirement more and more higher today, 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 220V AC-input voltage.
Summary of the invention
For there is the problem that cost is high in 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 greatly reducing costs.
The series LED constant-current drive circuit of described voltage multiplying rectifier high voltage supply, it is characterized in that comprising exchanging and input over-voltage over-current protection circuit, voltage doubling rectifing circuit, voltage adjustment constant-current drive circuit, Current Feedback Control Circuit, exchanging input over-voltage over-current protection circuit is connected with voltage doubling rectifing circuit, voltage doubling rectifing circuit is adjusted constant-current drive circuit with voltage and is connected, voltage is adjusted constant-current drive circuit and is connected with series LED array, Current Feedback Control Circuit respectively, and series LED array is connected with Current Feedback Control Circuit; Described interchange input over-voltage over-current protection circuit is comprised of the piezo-resistance MY of overcurrent protection resettable fuse WHPTC and overvoltage protection; voltage doubling rectifing circuit is comprised of diode D1, diode D2 and capacitor C 1, capacitor C 2; voltage is adjusted constant-current drive circuit and is comprised of resistance R 1, resistance R 2 and triode Q1, capacitor C 3, current regulator diode D3; series LED array is comprised of at least 80 LED that arrange that connect, and Current Feedback Control Circuit is comprised 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 is connected with 220V alternating current one end, the other end of overcurrent protection resettable fuse WHPTC and piezo-resistance MY one end, the positive pole of diode D1, the negative pole of diode D2 is connected, one end of the negative pole of diode D1 and capacitor C 1, one end of resistance R 1, the collector electrode of triode Q1 is connected, the other end of piezo-resistance MY and the 220V alternating current other end, capacitor C 1 other end, capacitor C 2 one end are connected, the other end of the positive pole of diode D2 and capacitor C 2, the collector electrode of triode Q2, the negative pole of capacitor C 3, one end of resistance R 4 is connected, the emitter of the other end of resistance R 1 and triode Q2, one end of resistance R 2 is connected, and the other end of resistance R 2 is connected with the base stage of triode Q1, the positive pole of the emitter of triode Q1 and capacitor C 3, the input of current regulator diode D3 is connected, and the base stage of triode Q2 is connected with one end of resistance R 3, the other end of the other end of resistance R 3 and resistance R 4, the negative pole of series LED array is connected, and the positive pole of series LED array is connected with the output of current regulator diode D3.
On-line operation of the present invention is under 220V AC-input voltage, and circuit is comprised 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 applied in any combination of any LED lighting, can directly be powered by civil power 220V, be the circuit that a kind of high voltage and constant current drives, than the low pressure constant-current drive technology of current LED illumination extensive use, reduced the power unit of AC/DC, reach the object that has reduced cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is circuit theory diagrams of the present invention;
In figure: 1-exchanges input over-voltage over-current protection circuit, 2-voltage doubling rectifing circuit, 3-voltage is adjusted constant-current drive circuit, 4-series LED array, 5-Current Feedback Control Circuit.
Embodiment
Below in conjunction with Figure of description, the present invention will be further described:
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 is connected with voltage doubling rectifing circuit 2; voltage doubling rectifing circuit 2 is adjusted constant-current drive circuit 3 with voltage and is connected; voltage is adjusted constant-current drive circuit 3 and is connected with series LED array 4, Current Feedback Control Circuit 5 respectively, and series LED array 4 is connected with Current Feedback Control Circuit 5.Wherein, interchange input over-voltage over-current protection circuit 1 is comprised of the piezo-resistance MY of overcurrent protection resettable fuse WHPTC and overvoltage protection; voltage doubling rectifing circuit 2 is comprised of diode D1, diode D2 and capacitor C 1, capacitor C 2; voltage is adjusted constant-current drive circuit 3 and is comprised of resistance R 1, resistance R 2 and triode Q1, capacitor C 3, current regulator diode D3; the at least n LED that series LED array 4 is arranged by series connection forms; n >=80, Current Feedback Control Circuit 5 is comprised of resistance R 3, resistance R 4 and triode Q2.
The syndeton of circuit: overcurrent protection resettable fuse WHPTC one end is connected with 220V alternating current input one end, the other end of overcurrent protection resettable fuse WHPTC and piezo-resistance MY one end, the positive pole of diode D1, the negative pole of diode D2 is connected, one end of the negative pole of diode D1 and capacitor C 1, one end of resistance R 1, the collector electrode of triode Q1 is connected, the other end of piezo-resistance MY and the 220V alternating current input other end, capacitor C 1 other end, capacitor C 2 one end are connected, the other end of the positive pole of diode D2 and capacitor C 2, the collector electrode of triode Q2, the negative pole of capacitor C 3, one end of resistance R 4 is connected, the emitter of the other end of resistance R 1 and triode Q2, one end of resistance R 2 is connected, and the other end of resistance R 2 is connected with the base stage of triode Q1, the positive pole of the emitter of triode Q1 and capacitor C 3, the input of current regulator diode D3 is connected, and the base stage of triode Q2 is connected with one end of resistance R 3, the other end of the other end of resistance R 3 and resistance R 4, the negative pole end of series LED array is connected, and the positive terminal of series LED array is connected 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 220V AC-input voltage, this circuit is suitable for the applied in any combination of any LED lighting, can directly be powered by civil power 220V, it is the circuit that a kind of high voltage and constant current drives, the power unit that has reduced AC/DC than the low pressure constant-current drive technology of current LED illumination extensive use, reaches and has reduced cost object.

Claims (1)

1. the series LED constant-current drive circuit of voltage multiplying rectifier high voltage supply, it is characterized in that comprising exchanging and input over-voltage over-current protection circuit, voltage doubling rectifing circuit, voltage adjustment constant-current drive circuit, Current Feedback Control Circuit, exchanging input over-voltage over-current protection circuit is connected with voltage doubling rectifing circuit, voltage doubling rectifing circuit is adjusted constant-current drive circuit with voltage and is connected, voltage is adjusted constant-current drive circuit and is connected with series LED array, Current Feedback Control Circuit respectively, and series LED array is connected with Current Feedback Control Circuit; Described interchange input over-voltage over-current protection circuit is comprised of the piezo-resistance MY of overcurrent protection resettable fuse WHPTC and overvoltage protection, voltage doubling rectifing circuit is comprised of diode D1, diode D2 and capacitor C 1, capacitor C 2, voltage is adjusted constant-current drive circuit and is comprised of resistance R 1, resistance R 2 and triode Q1, capacitor C 3, current regulator diode D3, series LED array is comprised of at least 80 LED that arrange that connect, and Current Feedback Control Circuit is comprised of resistance R 3, resistance R 4 and triode Q2;
Described overcurrent protection resettable fuse WHPTC one end is connected with 220V alternating current one end, the other end of overcurrent protection resettable fuse WHPTC and piezo-resistance MY one end, the positive pole of diode D1, the negative pole of diode D2 is connected, one end of the negative pole of diode D1 and capacitor C 1, one end of resistance R 1, the collector electrode of triode Q1 is connected, the other end of piezo-resistance MY and the 220V alternating current other end, capacitor C 1 other end, capacitor C 2 one end are connected, the other end of the positive pole of diode D2 and capacitor C 2, the collector electrode of triode Q2, the negative pole of capacitor C 3, one end of resistance R 4 is connected, the emitter of the other end of resistance R 1 and triode Q2, one end of resistance R 2 is connected, and the other end of resistance R 2 is connected with the base stage of triode Q1, the positive pole of the emitter of triode Q1 and capacitor C 3, the input of current regulator diode D3 is connected, and the base stage of triode Q2 is connected with one end of resistance R 3, the other end of the other end of resistance R 3 and resistance R 4, the negative pole of series LED array is connected, and the positive pole of series LED array is connected with the output of current regulator diode D3.
CN201110327049.4A 2011-10-25 2011-10-25 Voltage-multiplying rectifying high-voltage power-supplying constant current driving circuit for serially connected LEDs (Light Emitting Diodes) Expired - Fee Related CN102510615B (en)

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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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* Cited by examiner, † Cited by third party
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
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

Citations (5)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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

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