CN204761765U - Big power drive circuit of white light LED - Google Patents
Big power drive circuit of white light LED Download PDFInfo
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- CN204761765U CN204761765U CN201520350827.5U CN201520350827U CN204761765U CN 204761765 U CN204761765 U CN 204761765U CN 201520350827 U CN201520350827 U CN 201520350827U CN 204761765 U CN204761765 U CN 204761765U
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Abstract
The utility model discloses a big power drive circuit of white light LED, including electric capacity C1, resistance R1 and LED banks H, electric capacity C1's one end connecting resistance R1 and 220V alternating current, electric capacity C1's the other end and rectifier bridge T's port 1 are connected to resistance R1's the other end. The utility model discloses big power drive circuit of white light LED has not only abandoned complicated transformer structure, has reduced drive circuit's volume, has reduced the cost of manufacture, uses the special driver chip of HV9910 type LED as control module moreover, and its input voltage range is big, and the drive current scope of output is wide, therefore the circuit has simple structure, stable, the application scope advantage extensively of output.
Description
Technical field
The utility model relates to a kind of drive circuit, specifically a kind of white light LEDs high-power drive circuit.
Background technology
Along with developing rapidly of LED.The conventional light source that present white LED light source is compared has that the life-span is long, solid state lighting is not fragile, specular removal, without advantages such as mercury environmental protection, antidetonations, followingly will become third generation light source, will bring another revolution of lighting field.LED is used lighting field, need the drive circuit of applicable LED, current most of LED drive circuit many uses transformer pressure-reducing structure, not only complex structure, volume is large but also export unstable, and most of LED drive chip requires strict to input voltage, narrow application range, therefore hinders the development of LED industry.
Utility model content
The purpose of this utility model is the white light LEDs high-power drive circuit providing a kind of structure simple, applied widely, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of white light LEDs high-power drive circuit, comprises electric capacity C1, resistance R1 and LED group H, one end contact resistance R1 of described electric capacity C1 and 220V alternating current, the other end of resistance R1 connects the other end of electric capacity C1 and the port one of rectifier bridge T, and the port 2 of rectifier bridge T connects electric capacity C2, electric capacity C4, the negative electrode of diode D1, the negative electrode of diode D2, a stiff end of potentiometer RP1, the anode of the sliding end of potentiometer RP1 and the pin VIN of chip IC 1, diode D2 connects the other end of electric capacity C2, electric capacity C3, resistance R2, resistance R3, the port 4 of rectifier bridge T and the pin GND of chip IC 1 ground connection, the other end of electric capacity C3 connects the pin VDD of chip IC 1, the pin PWMD of the chip IC 1 and pin LD of chip IC 1, the other end of the pin RT contact resistance R2 of chip IC 1, the pin GAME of chip IC 1 connects the grid of metal-oxide-semiconductor Q1, the other end of pin CS contact resistance R3 of chip IC 1 and the source electrode of metal-oxide-semiconductor Q1, the anode of diode D1 connects the other end of electric capacity C4, the drain electrode of inductance L 1 and metal-oxide-semiconductor Q1, another stiff end of potentiometer RP1 connects LED group H, and the other end of inductance L 1 connects the other end of LED group H.
As preferred version of the present utility model: the model of described chip IC 1 is HV9910.
As preferred version of the present utility model: described diode D2 is voltage stabilizing didoe.
Compared with prior art, the beneficial effects of the utility model are: the utility model white light LEDs high-power drive circuit has not only abandoned complicated transformer device structure, decrease the volume of drive circuit, reduce cost of manufacture, and use HV9910 type LED special driving chip as control module, its input voltage range is large, and the drive current range of output is wide, and therefore circuit has that structure is simple, stable output, advantage applied widely.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of white light LEDs high-power drive circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of white light LEDs high-power drive circuit, comprises electric capacity C1, resistance R1 and LED group H, one end contact resistance R1 of described electric capacity C1 and 220V alternating current, the other end of resistance R1 connects the other end of electric capacity C1 and the port one of rectifier bridge T, and the port 2 of rectifier bridge T connects electric capacity C2, electric capacity C4, the negative electrode of diode D1, the negative electrode of diode D2, a stiff end of potentiometer RP1, the anode of the sliding end of potentiometer RP1 and the pin VIN of chip IC 1, diode D2 connects the other end of electric capacity C2, electric capacity C3, resistance R2, resistance R3, the port 4 of rectifier bridge T and the pin GND of chip IC 1 ground connection, the other end of electric capacity C3 connects the pin VDD of chip IC 1, the pin PWMD of the chip IC 1 and pin LD of chip IC 1, the other end of the pin RT contact resistance R2 of chip IC 1, the pin GAME of chip IC 1 connects the grid of metal-oxide-semiconductor Q1, the other end of pin CS contact resistance R3 of chip IC 1 and the source electrode of metal-oxide-semiconductor Q1, the anode of diode D1 connects the other end of electric capacity C4, the drain electrode of inductance L 1 and metal-oxide-semiconductor Q1, another stiff end of potentiometer RP1 connects LED group H, and the other end of inductance L 1 connects the other end of LED group H.
The model of chip IC 1 is HV9910.Diode D2 is voltage stabilizing didoe.
Operation principle of the present utility model is: circuit input stage is made up of full-wave rectification bridge T, reduction voltage circuit, voltage stabilizing circuit, filter circuit, wherein voltage stabilizing circuit is voltage stabilizing didoe D2, filter circuit is electric capacity C2, reduction voltage circuit is resistance R1 and resistance R2, jointly completes the conversion process to alternating current.Controlled stage is built by HV9910 chip, be input to the VIN of chip through the filtered voltage of input stage, as the input voltage V of circuit, its peak value is 310V, average is that 190V.VDD, LD, PWMD end connects GND end by capacitor, with voltage in the sheet maintaining respective pins.The square-wave pulse signal holding output frequency certain by GATE is as switching signal control switch pipe, and its frequency holds connect resistance to set by RT, and the LED group H current signal that pulse duration holds sampling resistor RCS to feed back by CS controls.Inductance L 1 provides filtering and energy storage and afterflow to power for drive circuit in circuit, and to keep the harmony of electric current in load, recovery diode completes the effect building freewheeling path.Open in half cycle in switching signal, directly powered to LED group H by the filtered electromotive force of prime, and charge to L1; Turn off in half cycle in switching signal, the loop energy supply be made up of to fast recovery diode D1, LED group H the L1 being full of energy, realize in one-period, complete the lasting driving to LED, potentiometer RP1 can regulate the brightness of H easily.
Claims (3)
1. a white light LEDs high-power drive circuit, comprises electric capacity C1, resistance R1 and LED group H, it is characterized in that, one end contact resistance R1 of described electric capacity C1 and 220V alternating current, the other end of resistance R1 connects the other end of electric capacity C1 and the port one of rectifier bridge T, and the port 2 of rectifier bridge T connects electric capacity C2, electric capacity C4, the negative electrode of diode D1, the negative electrode of diode D2, a stiff end of potentiometer RP1, the anode of the sliding end of potentiometer RP1 and the pin VIN of chip IC 1, diode D2 connects the other end of electric capacity C2, electric capacity C3, resistance R2, resistance R3, the port 4 of rectifier bridge T and the pin GND of chip IC 1 ground connection, the other end of electric capacity C3 connects the pin VDD of chip IC 1, the pin PWMD of the chip IC 1 and pin LD of chip IC 1, the other end of the pin RT contact resistance R2 of chip IC 1, the pin GAME of chip IC 1 connects the grid of metal-oxide-semiconductor Q1, the other end of pin CS contact resistance R3 of chip IC 1 and the source electrode of metal-oxide-semiconductor Q1, the anode of diode D1 connects the other end of electric capacity C4, the drain electrode of inductance L 1 and metal-oxide-semiconductor Q1, another stiff end of potentiometer RP1 connects LED group H, and the other end of inductance L 1 connects the other end of LED group H.
2. a kind of white light LEDs high-power drive circuit according to claim 1, is characterized in that, the model of described chip IC 1 is HV9910.
3. a kind of white light LEDs high-power drive circuit according to claim 1, is characterized in that, described diode D2 is voltage stabilizing didoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520350827.5U CN204761765U (en) | 2015-05-26 | 2015-05-26 | Big power drive circuit of white light LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520350827.5U CN204761765U (en) | 2015-05-26 | 2015-05-26 | Big power drive circuit of white light LED |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204761765U true CN204761765U (en) | 2015-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520350827.5U Expired - Fee Related CN204761765U (en) | 2015-05-26 | 2015-05-26 | Big power drive circuit of white light LED |
Country Status (1)
| Country | Link |
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| CN (1) | CN204761765U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108012378A (en) * | 2017-12-22 | 2018-05-08 | 深圳市晟腾企业管理有限公司 | A kind of construction site highlight illumination controller |
-
2015
- 2015-05-26 CN CN201520350827.5U patent/CN204761765U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108012378A (en) * | 2017-12-22 | 2018-05-08 | 深圳市晟腾企业管理有限公司 | A kind of construction site highlight illumination controller |
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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: 20151111 Termination date: 20190526 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |