CN105451391A - LED driving circuit and lamp - Google Patents
LED driving circuit and lamp Download PDFInfo
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- CN105451391A CN105451391A CN201510952395.XA CN201510952395A CN105451391A CN 105451391 A CN105451391 A CN 105451391A CN 201510952395 A CN201510952395 A CN 201510952395A CN 105451391 A CN105451391 A CN 105451391A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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Abstract
The invention discloses an LED driving circuit. The LED driving circuit comprises mains supply, a rectification filtering circuit, a driving circuit, an output circuit and a feedback circuit, wherein a regulating circuit is arranged between the mains supply and the rectification filtering circuit; the rectification filtering circuit is connected with the driving circuit; and the other end of the driving circuit is connected with the feedback circuit. According to the LED driving circuit, the regulating circuit is added between the rectification filtering circuit and the driving circuit, so that the output voltage and output current are stable, and stroboflash caused in LED driving is eliminated.
Description
Technical field
The present invention relates to lighting technical field, particularly a kind of LED drive circuit and light fixture.
Background technology
Along with the development of science and technology, LED is as new type light source, there is the advantages such as volume is little, power consumption is low, optical efficiency is high, the life-span is long, environmental protection, be widely used in lighting field, also there is LED drive circuit miscellaneous thereupon, in actual applications, different LED drive circuits is adopted all will to have an impact to luminous efficiency and life-span.
At present in the mode of numerous driving LED, some employing current rectifying and wave filtering circuits and LED drive circuit are directly connected the high efficiency drive realizing LED, but its exist LED load glimmer, fragile, have the defects such as stronger High-frequency Interference, bring inconvenience to user.In the application, LED drive circuit needs to eliminate the stroboscopic problem caused when LED drives as far as possible.
Summary of the invention
For solving the above problem existed in prior art, the invention discloses a kind of LED drive circuit, comprise civil power, current rectifying and wave filtering circuit, drive circuit, output circuit and feedback circuit, wherein be provided with regulating circuit between civil power and current rectifying and wave filtering circuit, current rectifying and wave filtering circuit is connected with drive circuit, and the drive circuit other end is connected with output circuit and feedback circuit.
Further, described current rectifying and wave filtering circuit comprises piezo-resistance R1, inductance L 1, inductance L 2, resistance R2, resistance R3, electric capacity C1 and rectification circuit, one end of inductance L 1 is connected with the live wire L of civil power, one end of inductance L 2 is connected with the zero line N of civil power, inductance L 1 is connected with the input of rectification circuit with the other end of inductance L 2, resistance R2 two ends connect respectively at the two ends of inductance L 1, and the two ends of resistance R3 connect respectively at the two ends of inductance L 2.
Further, the rectification circuit in described current rectifying and wave filtering circuit is full bridge rectifier.
Further, described drive circuit comprises inductance L 3, diode D2, voltage stabilizing didoe D3, diode D4, voltage stabilizing didoe D5, diode D6, diode D7, transformer T, triode Q3, metal-oxide-semiconductor Q4 and driving chip U1, wherein one end of inductance L 3 is connected with the positive output end of rectification circuit, the other end of inductance L 3 is connected with the voltage input end VCC of driving chip U1 after resistance R14 through diode D4, the other end of inductance L 3 is connected with the output DRV of driving chip U1 after diode D7 through the armature winding of transformer T, after resistance R8 and resistance R9 connect, one end is connected the other end with inductance L 3 and is connected with the collector electrode of triode Q3, the collector electrode of triode Q3 is connected with the negative output terminal of current rectifying and wave filtering circuit after regulating circuit, resistance R8 is connected with the base stage of the tie point of resistance R9 with the positive pole of diode D2 and triode Q3, the other end of diode D2 respectively with the emitting stage of triode Q3, one end of electric capacity C2 is connected with one end of resistance R10, the other end of electric capacity C2 is connected with the collector electrode of triode Q3, the other end of resistance R10 is connected with the grid of metal-oxide-semiconductor Q4, the source electrode of metal-oxide-semiconductor Q4 is connected with the collector electrode of triode Q3, the drain electrode of metal-oxide-semiconductor Q4 is connected with the collector electrode of triode Q3 after resistance R11, the anode of voltage stabilizing didoe D5 is connected with the other end of inductance L 3, the negative electrode of voltage stabilizing didoe D5 is connected with the negative electrode of diode D6, the anode of diode D6 connects in the output DRV of driving chip U1 after diode D7,
Further, described driving chip U1 comprises field effect transistor, and wherein the drain electrode of field effect transistor is as the output of driving chip U1, and the source electrode of field effect transistor is connected with the drain electrode of metal-oxide-semiconductor Q4.
Further, described output circuit comprises voltage stabilizing didoe D8, electric capacity C6 and resistance R19, the anode of voltage stabilizing didoe D8 is connected with the anode of transformer T secondary winding, and the negative electrode of voltage stabilizing didoe D8 is connected with the negative terminal of transformer T secondary winding after the LED string that multiple LED etc. are serially connected.
Further, described feedback circuit comprises diode D9, diode D10, voltage stabilizing didoe D11 and triode Q5, wherein the anode of diode D9 assists the anode of winding to be connected through resistance R18 and transformer T, the negative electrode of diode D9 is connected with the feedback end FB of the collector electrode of triode Q5 and driving chip U1 after resistance R15, anode and the transformer T of diode D10 assist the anode of winding to be connected, the negative electrode of diode D10 is connected with one end of the negative electrode of voltage stabilizing didoe D11 and electric capacity C9, the other end of electric capacity C9 is connected with the emitting stage of triode Q5, the anode of voltage stabilizing didoe D11 is connected with the base stage of triode Q5.
Further, described regulating circuit comprises metal-oxide-semiconductor Q1, resistance R4, resistance R5, resistance R6 and triode Q2, wherein the drain electrode of metal-oxide-semiconductor Q1 is connected with the positive output end of rectification circuit, the source electrode of metal-oxide-semiconductor Q1 is connected with the negative output terminal of rectification circuit after resistance R4, one end of resistance R5 is connected with the positive output end of rectification circuit, the other end of resistance R5 is connected with the collector electrode of the grid of metal-oxide-semiconductor Q1 and triode Q2, the emitting stage of triode Q2 is connected with the negative output terminal of rectification circuit, the base stage of triode Q2 is through resistance R6, be connected with the negative output terminal of rectification circuit after resistance R7, voltage-stabiliser tube D1 one end is connected the other end with the grid of metal-oxide-semiconductor Q1 and is connected with the negative output terminal of rectification circuit, resistance R6 is connected with triode Q3 collector electrode in drive circuit with the tie point of resistance R7.
A kind of light fixture, comprises LED drive circuit as above.
Compared with prior art, the invention has the advantages that: the present invention, by increasing regulating circuit between current rectifying and wave filtering circuit and drive circuit, makes output voltage and current stabilization, thus eliminate the stroboscopic caused when LED drives.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is a kind of circuit structure diagram of LED drive circuit of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further.
The present embodiment provides a kind of LED drive circuit, and as shown in Figure 1, civil power 1, current rectifying and wave filtering circuit 2, drive circuit 3, output circuit 4 and feedback circuit 5, characterized by further comprising regulating circuit 6, and it is connected between current rectifying and wave filtering circuit 2 and drive circuit 3.
Fig. 2 illustrates LED control circuit 3 structure of LED drive circuit of the present invention, is specially:
Current rectifying and wave filtering circuit 2 comprises piezo-resistance R1, inductance L 1, inductance L 2, resistance R2, resistance R3, electric capacity C1, rectification circuit, one end of inductance L 1, one end of inductance L 2 connect live wire L and the zero line N of civil power 1 respectively, the input of the other end of inductance L 1, another termination rectification circuit of inductance L 2, resistance R2 and resistance R3 is connected to the two ends of inductance L 1 and inductance L 2 respectively, and rectification circuit is full bridge rectifier.
Regulating circuit 6 comprises metal-oxide-semiconductor Q1, resistance R4, resistance R5, resistance R6, triode Q2, wherein the drain electrode of metal-oxide-semiconductor Q1 connects the positive output end of rectification circuit, the source electrode of metal-oxide-semiconductor Q1 connects the positive output end negative output terminal of rectification circuit after resistance R4, the positive output end of the one termination rectification circuit of resistance R5, the grid of another termination metal-oxide-semiconductor Q1 of resistance R5 and the collector electrode of triode Q2, the emitting stage of triode Q2 connects the negative output terminal of rectification circuit, the base stage of triode Q2 is through resistance R6, the negative output terminal of rectification circuit is connect after resistance R7, between the grid that voltage-stabiliser tube D1 is connected to metal-oxide-semiconductor Q1 and the negative output terminal of rectification circuit, resistance R6, the tie point of resistance R7 is connected with triode Q3 collector electrode in drive circuit (3).
Drive circuit (3) comprises inductance L 3, diode D2, voltage stabilizing didoe D3, diode D4, voltage stabilizing didoe D5, diode D6, diode D7, transformer T, triode Q3, metal-oxide-semiconductor Q4, driving chip U1, the wherein positive output end of a termination rectification circuit of inductance L 3, the other end is through diode D4, the voltage input end VCC of driving chip U1 is met after resistance R4, the other end of inductance L 3 is through the armature winding of transformer T, the output DRV of driving chip U1 is met after diode D7, resistance R8 is connected to after connecting with resistance R9 between the other end of inductance L 3 and the collector electrode of triode Q3, the collector electrode of triode Q3 connects the negative output terminal of current rectifying and wave filtering circuit (2) after regulating circuit (6), the tie point of resistance R8 and resistance R9 connects the positive pole of diode D2 and the base stage of triode Q3, the other end of diode D2 connects the emitting stage of triode Q3 respectively, one end of electric capacity C2, one end of resistance R10, the collector electrode of another termination triode Q3 of electric capacity C2, the grid of another termination metal-oxide-semiconductor Q4 of resistance R10, the source electrode of metal-oxide-semiconductor Q4 connects the collector electrode of triode Q3, the drain electrode of metal-oxide-semiconductor Q4 connects the collector electrode of triode Q3 after resistance R11, the anode of voltage stabilizing didoe D5 connects the other end of inductance L 3, the negative electrode of voltage stabilizing didoe D5 connects the negative electrode of diode D6, the anode of diode D6 meets the output DRV of driving chip U1 after diode D7, described driving chip U1 comprises field effect transistor, wherein the drain electrode of field effect transistor is as the output of driving chip U1, the source electrode of field effect transistor connects the drain electrode of metal-oxide-semiconductor Q4.
Output circuit 4 comprises voltage stabilizing didoe D8, electric capacity C6 and resistance R19, the anode of voltage stabilizing didoe D8 connects the anode of transformer T secondary winding, and the negative electrode of voltage stabilizing didoe D8 connects the negative terminal of transformer T secondary winding after the LED string that multiple LED is serially connected.
Feedback circuit 5 comprises diode D9, diode D10, voltage stabilizing didoe D11, triode Q5, wherein the anode of diode D9 connects through resistance R18 the anode that transformer T assists winding, the negative electrode of diode D9 meets the collector electrode of triode Q5 and the feedback end FB of driving chip U1 after resistance R15, the anode of diode D10 connects the anode that transformer T assists winding, its negative electrode connects the negative electrode of voltage stabilizing didoe D11 and one end of electric capacity C9, the emitting stage of another termination triode Q5 of electric capacity C9, the anode of voltage stabilizing didoe D11 connects the base stage of triode Q5.
Owing to increasing regulating circuit 6 between current rectifying and wave filtering circuit 2 and drive circuit 3; regulating circuit 6 senses output voltage by resistance R6; thus control conducting and the shutoff of triode Q2; the conducting of triode Q2 and shutoff and then control conducting and the shutoff of metal-oxide-semiconductor Q1; by the conducting of metal-oxide-semiconductor with turn off with the output of regulating circuit, voltage stabilizing didoe R4 shields to metal-oxide-semiconductor Q1.The increase of regulating circuit 6 can eliminate the LED load stroboscopic problem caused when current rectifying and wave filtering circuit 2 is directly connected with drive circuit 3.
The present invention provides a kind of light fixture in addition, comprises the LED drive circuit in LED string and Fig. 1-2, and wherein LED string at least comprises two LED.
The foregoing is only the preferred embodiments of the present invention; be not limited to the present invention, to those skilled in the art, the present invention can have various modifications and variations; within the spirit and principles in the present invention all, the amendment done all should be included within protection scope of the present invention.
Claims (9)
1. a LED drive circuit, comprise civil power, current rectifying and wave filtering circuit, drive circuit, output circuit and feedback circuit, it is characterized in that: between civil power and current rectifying and wave filtering circuit, be provided with regulating circuit, current rectifying and wave filtering circuit is connected with drive circuit, and the drive circuit other end is connected with output circuit and feedback circuit.
2.
according to claima kind of LED drive circuit described in 1, it is characterized in that: described current rectifying and wave filtering circuit comprises piezo-resistance R1, inductance L 1, inductance L 2, resistance R2, resistance R3, electric capacity C1 and rectification circuit, one end of inductance L 1 is connected with the live wire L of civil power, one end of inductance L 2 is connected with the zero line N of civil power, inductance L 1 is connected with the input of rectification circuit with the other end of inductance L 2, resistance R2 two ends connect respectively at the two ends of inductance L 1, and the two ends of resistance R3 connect respectively at the two ends of inductance L 2.
3.
according to claima kind of LED drive circuit described in 2, is characterized in that: the rectification circuit in described current rectifying and wave filtering circuit is full bridge rectifier.
4.
according to claima kind of LED drive circuit described in 1, it is characterized in that: described drive circuit comprises inductance L 3, diode D2, voltage stabilizing didoe D3, diode D4, voltage stabilizing didoe D5, diode D6, diode D7, transformer T, triode Q3, metal-oxide-semiconductor Q4 and driving chip U1, wherein one end of inductance L 3 is connected with the positive output end of rectification circuit, the other end of inductance L 3 is connected with the voltage input end VCC of driving chip U1 after resistance R14 through diode D4, the other end of inductance L 3 is connected with the output DRV of driving chip U1 after diode D7 through the armature winding of transformer T, after resistance R8 and resistance R9 connect, one end is connected the other end with inductance L 3 and is connected with the collector electrode of triode Q3, the collector electrode of triode Q3 is connected with the negative output terminal of current rectifying and wave filtering circuit after regulating circuit, resistance R8 is connected with the base stage of the tie point of resistance R9 with the positive pole of diode D2 and triode Q3, the other end of diode D2 respectively with the emitting stage of triode Q3, one end of electric capacity C2 is connected with one end of resistance R10, the other end of electric capacity C2 is connected with the collector electrode of triode Q3, the other end of resistance R10 is connected with the grid of metal-oxide-semiconductor Q4, the source electrode of metal-oxide-semiconductor Q4 is connected with the collector electrode of triode Q3, the drain electrode of metal-oxide-semiconductor Q4 is connected with the collector electrode of triode Q3 after resistance R11, the anode of voltage stabilizing didoe D5 is connected with the other end of inductance L 3, the negative electrode of voltage stabilizing didoe D5 is connected with the negative electrode of diode D6, the anode of diode D6 connects in the output DRV of driving chip U1 after diode D7.
5.
according to claima kind of LED drive circuit described in 1, is characterized in that: described driving chip U1 comprises field effect transistor, and wherein the drain electrode of field effect transistor is as the output of driving chip U1, and the source electrode of field effect transistor is connected with the drain electrode of metal-oxide-semiconductor Q4.
6.
according to claima kind of LED drive circuit described in 1, it is characterized in that: described output circuit comprises voltage stabilizing didoe D8, electric capacity C6 and resistance R19, the anode of voltage stabilizing didoe D8 is connected with the anode of transformer T secondary winding, and the negative electrode of voltage stabilizing didoe D8 is connected with the negative terminal of transformer T secondary winding after the LED string that multiple LED is serially connected.
7.
according to claima kind of LED drive circuit described in 1, it is characterized in that: described feedback circuit comprises diode D9, diode D10, voltage stabilizing didoe D11 and triode Q5, wherein the anode of diode D9 assists the anode of winding to be connected through resistance R18 and transformer T, the negative electrode of diode D9 is connected with the feedback end FB of the collector electrode of triode Q5 and driving chip U1 after resistance R15, anode and the transformer T of diode D10 assist the anode of winding to be connected, the negative electrode of diode D10 is connected with one end of the negative electrode of voltage stabilizing didoe D11 and electric capacity C9, the other end of electric capacity C9 is connected with the emitting stage of triode Q5, the anode of voltage stabilizing didoe D11 is connected with the base stage of triode Q5.
8.
according to claima kind of LED drive circuit described in 3, it is characterized in that: described regulating circuit comprises metal-oxide-semiconductor Q1, resistance R4, resistance R5, resistance R6 and triode Q2, wherein the drain electrode of metal-oxide-semiconductor Q1 is connected with the positive output end of rectification circuit, the source electrode of metal-oxide-semiconductor Q1 is connected with the negative output terminal of rectification circuit after resistance R4, one end of resistance R5 is connected with the positive output end of rectification circuit, the other end of resistance R5 is connected with the collector electrode of the grid of metal-oxide-semiconductor Q1 and triode Q2, the emitting stage of triode Q2 is connected with the negative output terminal of rectification circuit, the base stage of triode Q2 is through resistance R6, be connected with the negative output terminal of rectification circuit after resistance R7, voltage-stabiliser tube D1 one end is connected the other end with the grid of metal-oxide-semiconductor Q1 and is connected with the negative output terminal of rectification circuit, resistance R6 is connected with triode Q3 collector electrode in drive circuit with the tie point of resistance R7.
9. a light fixture, is characterized in that: described light fixture comprises
as claimlED drive circuit described in any one of 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510952395.XA CN105451391B (en) | 2015-12-17 | 2015-12-17 | A kind of LED drive circuit and light fixture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510952395.XA CN105451391B (en) | 2015-12-17 | 2015-12-17 | A kind of LED drive circuit and light fixture |
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| CN105451391A true CN105451391A (en) | 2016-03-30 |
| CN105451391B CN105451391B (en) | 2017-11-17 |
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| CN201510952395.XA Expired - Fee Related CN105451391B (en) | 2015-12-17 | 2015-12-17 | A kind of LED drive circuit and light fixture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211468A (en) * | 2016-08-19 | 2016-12-07 | 盐城工学院 | A kind of LED drive circuit |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010257718A (en) * | 2009-04-23 | 2010-11-11 | Toshiba Lighting & Technology Corp | Led lighting device and marker lamp system |
| CN102098855A (en) * | 2011-02-20 | 2011-06-15 | 苏州达方电子有限公司 | Light-emitting diode (LED) driving device |
| CN102300371A (en) * | 2011-08-02 | 2011-12-28 | 李光男 | Light source driving circuit and long tube lamp comprising same |
| CN203206508U (en) * | 2013-03-25 | 2013-09-18 | 福建省卓珏光电科技有限公司 | Novel LED lamp driving circuit |
| CN104105258A (en) * | 2013-04-04 | 2014-10-15 | 立锜科技股份有限公司 | Light emitting device power supply circuit and damping circuit therein and driving method thereof |
| CN104780695A (en) * | 2015-05-05 | 2015-07-15 | 卫斌鹏 | LED stepless dimming constant current drive power source |
| US20150289341A1 (en) * | 2014-04-07 | 2015-10-08 | Dongbu Hitek Co., Ltd. | Light Emitting Device Driving Apparatus and Illumination System Including the Same |
| CN205430668U (en) * | 2015-12-17 | 2016-08-03 | 盐城工学院 | LED drive circuit and lighting apparatus |
-
2015
- 2015-12-17 CN CN201510952395.XA patent/CN105451391B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010257718A (en) * | 2009-04-23 | 2010-11-11 | Toshiba Lighting & Technology Corp | Led lighting device and marker lamp system |
| CN102098855A (en) * | 2011-02-20 | 2011-06-15 | 苏州达方电子有限公司 | Light-emitting diode (LED) driving device |
| CN102300371A (en) * | 2011-08-02 | 2011-12-28 | 李光男 | Light source driving circuit and long tube lamp comprising same |
| CN203206508U (en) * | 2013-03-25 | 2013-09-18 | 福建省卓珏光电科技有限公司 | Novel LED lamp driving circuit |
| CN104105258A (en) * | 2013-04-04 | 2014-10-15 | 立锜科技股份有限公司 | Light emitting device power supply circuit and damping circuit therein and driving method thereof |
| US20150289341A1 (en) * | 2014-04-07 | 2015-10-08 | Dongbu Hitek Co., Ltd. | Light Emitting Device Driving Apparatus and Illumination System Including the Same |
| CN104780695A (en) * | 2015-05-05 | 2015-07-15 | 卫斌鹏 | LED stepless dimming constant current drive power source |
| CN205430668U (en) * | 2015-12-17 | 2016-08-03 | 盐城工学院 | LED drive circuit and lighting apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106211468A (en) * | 2016-08-19 | 2016-12-07 | 盐城工学院 | A kind of LED drive circuit |
| CN106211468B (en) * | 2016-08-19 | 2018-02-02 | 盐城工学院 | A kind of LED drive circuit |
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| CN105451391B (en) | 2017-11-17 |
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