CN201226608Y - Wide-voltage high-power LED drive circuit - Google Patents
Wide-voltage high-power LED drive circuit Download PDFInfo
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- CN201226608Y CN201226608Y CNU2008200489111U CN200820048911U CN201226608Y CN 201226608 Y CN201226608 Y CN 201226608Y CN U2008200489111 U CNU2008200489111 U CN U2008200489111U CN 200820048911 U CN200820048911 U CN 200820048911U CN 201226608 Y CN201226608 Y CN 201226608Y
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- 239000003990 capacitor Substances 0.000 claims abstract description 39
- 239000013078 crystal Substances 0.000 claims abstract description 26
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 13
- 230000005669 field effect Effects 0.000 claims description 16
- AQSOTOUQTVJNMY-UHFFFAOYSA-N 7-(dimethylamino)-4-hydroxy-3-oxophenoxazin-10-ium-1-carboxylic acid;chloride Chemical compound [Cl-].OC(=O)C1=CC(=O)C(O)=C2OC3=CC(N(C)C)=CC=C3[NH+]=C21 AQSOTOUQTVJNMY-UHFFFAOYSA-N 0.000 abstract 1
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 230000006978 adaptation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 108010041986 DNA Vaccines Proteins 0.000 description 1
- 229940021995 DNA vaccine Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000003053 immunization Effects 0.000 description 1
- 238000002649 immunization Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a wide-range voltage and large power LED drive circuit, and is to provide an LED driving circuit which has wide application scope of voltage, basically stable current, large drive power and does not damage LED and converters. The drive circuit comprises a load LED, a DC-DC constant current boosting chip U1, a transistor Q1, an FET Q2, a crystal diode ID1, a crystal diode IID2, a voltage stabilizing diode IIID3, an inductance coil L, a resistor IR1, a resistor IIR2, a resistor IIIR3, a resistor IVR4, a resistor VR5, a thermosensitive resistor RT, a capacitor IC1, a capacitor IIC2 and a capacitor IIIC3 which are corresponding, adaptive and electrically connected. The utility model relates to a wide-range voltage large power LED drive circuit which has very wide scope of application and can be widely applied to all LED driving application fields.
Description
Technical field
The utility model relates to wide voltage high-power LED drive circuit.
Background technology
Existing a lot of years of the application of LED, along with the progress of state-of-the-art technology, they become strong competitor in the illumination market just gradually.New high-brightness LED has the very long life-span (about 100,000 hours) and very high efficient (about 30 lumens/watt).Past three during the last ten years, the light output brightness of LED just can be doubled in per 18～24 months, and this growth also can continue, it is inexorable trend that LED is just becoming a kind of of following main body light source, therefore the drive circuit that adapts to LED also requires corresponding raising and perfect, when output voltage may be higher than also may be lower than input voltage the time, the discontinuous type of voltage step-up of peak-current mode control is a good selection of led driver.But present widely used type of voltage step-up is that peak current is controlled and adopt the type of voltage step-up of discontinuous current-mode, is a kind of transducer of power invariability, and therefore, any variation of LED voltage all can cause the corresponding change of LED electric current; Another problem is that the LED open-circuit condition can produce the high voltage that damages transducer in circuit; In addition, also need extra circuit to change the firm power transducer into the constant current transducer, and under immunization with gD DNA vaccine, protect transducer.The high-power LED drive circuit also relates to the big problem of electric current, how to address the above problem, and does not still have optional product at present on the market.
In sum, exist at present that electric current changes greatly, driving power is little in the Driving technique of LED and damage the defective of LED and transducer easily.
The utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of voltage adaptation wide ranges, electric current is basicly stable, driving power damages LED and transducer greatly and not led drive circuit are provided.
The technical scheme that the utility model adopted is: the utility model comprises load LED, the DC-DC constant current chip U1 that boosts, transistor triode Q1, field effect transistor Q2, crystal diode I D1, crystal diode II D2, voltage stabilizing didoe III D3, inductance coil L, resistance I R1, resistance II R2, resistance III R3, resistance IV R4, resistance V R5, thermistor RT, capacitor I C1, capacitor I I C2, capacitor I II C3, the boost pin one of chip U1 of described DC-DC constant current is connected with the grid of described field effect transistor Q2, the boost pin 6 of chip U1 of described DC-DC constant current is connected with described resistance II R2 with the source electrode of described field effect transistor, the boost pin two of chip U1 of described DC-DC constant current connects the other end of described resistance I R1 and described resistance II R2 and altogether, the other end of described resistance I R1 is connected with the base stage of described transistor Q1, described resistance II R2 is connected in parallel on described DC-DC constant current and boosts on the pin 6 and pin two of chip U, the emitter of described transistor Q1 is connected with the positive pole of described crystal diode I D1, the negative pole of described crystal diode I D1 is connected with the collector electrode of described transistor Q1, the collector electrode of described transistor Q1 also is connected with the negative pole of described inductance coil L and described load LED, the other end of described inductance coil L is connected with the positive pole of described crystal diode II D2 and the drain electrode of described field effect transistor Q2, the negative pole of described crystal diode II D2 is connected with described capacitor I II C3, the positive pole of resistance III R3 and described load LED, the boost pin 3 of chip U of described DC-DC constant current connects described thermistor RT, resistance IVR4, the other end of described thermistor RT connects altogether, the other end of described resistance IVR4 is connected with described resistance V R5, the other end of resistance V R3, described capacitor I C1, described voltage stabilizing didoe III D3 negative pole, the boost pin 4 of chip U of described DC-DC constant current, the other end of described resistance V R5 connects the boost pin 5 of chip U1 of described DC-DC constant current, described capacitor I I C2, the other end of described capacitor I I C2 are connected with the other end of described voltage stabilizing didoe III D3, the other end of described capacitor I C1, the other end of described capacitor I II C3 and altogether.
The beneficial effects of the utility model are: because the utility model comprises load LED, the DC-DC constant current chip U1 that boosts, transistor triode Q1, field effect transistor Q2, crystal diode I D1, crystal diode II D2, voltage stabilizing didoe III D3, inductance coil L, resistance I R1, resistance II R2, resistance III R3, resistance IV R4, resistance V R5, thermistor RT, capacitor I C1, capacitor I I C2, capacitor I II C3, the boost pin one of chip U1 of described DC-DC constant current is connected with the grid of described field effect transistor Q2, the boost pin 6 of chip U1 of described DC-DC constant current is connected with described resistance II R2 with the source electrode of described field effect transistor, the boost pin two of chip U1 of described DC-DC constant current connects the other end of described resistance I R1 and described resistance II R2 and altogether, the other end of described resistance I R1 is connected with the base stage of described transistor Q1, described resistance II R2 is connected in parallel on described DC-DC constant current and boosts on the pin 6 and pin two of chip U, the emitter of described transistor Q1 is connected with the positive pole of described crystal diode I D1, the negative pole of described crystal diode I D1 is connected with the collector electrode of described transistor Q1, the collector electrode of described transistor Q1 also is connected with the negative pole of described inductance coil L and described load LED, the other end of described inductance coil L is connected with the positive pole of described crystal diode II D2 and the drain electrode of described field effect transistor Q2, the negative pole of described crystal diode II D2 is connected with described capacitor I II C3, the positive pole of resistance III R3 and described load LED, the boost pin 3 of chip U of described DC-DC constant current connects described thermistor RT, resistance IV R4, the other end of described thermistor RT connects altogether, the other end of described resistance IV R4 is connected with described resistance V R5, the other end of resistance V R3, described capacitor I C1, described voltage stabilizing didoe III D3 negative pole, the boost pin 4 of chip U of described DC-DC constant current, the other end of described resistance V R5 connects the boost pin 5 of chip U1 of described DC-DC constant current, described capacitor I I C2, the other end of described capacitor I I C2 are connected with the other end of described voltage stabilizing didoe III D3, the other end of described capacitor I C1, the other end of described capacitor I II C3 and altogether.So the utility model is the led drive circuit that a kind of voltage adaptation wide ranges, electric current are basicly stable, driving power damages LED and transducer greatly and not.
Description of drawings
Fig. 1 is the utility model circuit diagram.
Embodiment
As shown in Figure 1, the utility model comprises load LED, the DC-DC constant current chip U1 that boosts, transistor triode Q1, field effect transistor Q2, crystal diode I D1, crystal diode II D2, voltage stabilizing didoe III D3, inductance coil L, resistance I R1, resistance II R2, resistance III R3, resistance IV R4, resistance V R5, thermistor RT, capacitor I C1, capacitor I I C2, capacitor I II C3, the boost pin one of chip U1 of described DC-DC constant current is connected with the grid of described field effect transistor Q2, the boost pin 6 of chip U1 of described DC-DC constant current is connected with described resistance II R2 with the source electrode of described field effect transistor, the boost pin two of chip U1 of described DC-DC constant current connects the other end of described resistance I R1 and described resistance II R2 and altogether, the other end of described resistance I R1 is connected with the base stage of described transistor Q1, described resistance II R2 is connected in parallel on described DC-DC constant current and boosts on the pin 6 and pin two of chip U, the emitter of described transistor Q1 is connected with the positive pole of described crystal diode I D1, the negative pole of described crystal diode I D1 is connected with the collector electrode of described transistor Q1, the collector electrode of described transistor Q1 also is connected with the negative pole of described inductance coil L and described load LED, the other end of described inductance coil L is connected with the positive pole of described crystal diode II D2 and the drain electrode of described field effect transistor Q2, the negative pole of described crystal diode II D2 is connected with described capacitor I II C3, the positive pole of resistance III R3 and described load LED, the boost pin 3 of chip U of described DC-DC constant current connects described thermistor RT, resistance IVR4, the other end of described thermistor RT connects altogether, the other end of described resistance IV R4 is connected with described resistance V R5, the other end of resistance V R3, described capacitor I C1, described voltage stabilizing didoe III D3 negative pole, the boost pin 4 of chip U of described DC-DC constant current, the other end of described resistance V R5 connects the boost pin 5 of chip U1 of described DC-DC constant current, described capacitor I I C2, the other end of described capacitor I I C2 are connected with the other end of described voltage stabilizing didoe III D3, the other end of described capacitor I C1, the other end of described capacitor I II C3 and altogether.
Claims (1)
1, a kind of wide voltage high-power LED drive circuit, it comprises load LED, the DC-DC constant current chip U1 that boosts, transistor triode Q1, field effect transistor Q2, crystal diode I D1, crystal diode II D2, voltage stabilizing didoe III D3, inductance coil L, resistance I R1, resistance II R2, resistance III R3, resistance IV R4, resistance V R5, thermistor RT, capacitor I C1, capacitor I I C2, capacitor I II C3, it is characterized in that: the boost pin one of chip U1 of described DC-DC constant current is connected with the grid of described field effect transistor Q2, the boost pin 6 of chip U1 of described DC-DC constant current is connected with described resistance II R2 with the source electrode of described field effect transistor, the boost pin two of chip U1 of described DC-DC constant current connects the other end of described resistance I R1 and described resistance II R2 and altogether, the other end of described resistance I R1 is connected with the base stage of described transistor Q1, described resistance IIR2 is connected in parallel on described DC-DC constant current and boosts on the pin 6 and pin two of chip U, the emitter of described transistor Q1 is connected with the positive pole of described crystal diode I D1, the negative pole of described crystal diode I D1 is connected with the collector electrode of described transistor Q1, the collector electrode of described transistor Q1 also is connected with the negative pole of described inductance coil L and described load LED, the other end of described inductance coil L is connected with the positive pole of described crystal diode II D2 and the drain electrode of described field effect transistor Q2, the negative pole of described crystal diode II D2 is connected with described capacitor I II C3, the positive pole of resistance III R3 and described load LED, the boost pin 3 of chip U of described DC-DC constant current connects described thermistor RT, resistance IV R4, the other end of described thermistor RT connects altogether, the other end of described resistance IVR4 is connected with described resistance V R5, the other end of resistance V R3, described capacitor I C1, described voltage stabilizing didoe III D3 negative pole, the boost pin 4 of chip U of described DC-DC constant current, the other end of described resistance V R5 connects the boost pin 5 of chip U1 of described DC-DC constant current, described capacitor I I C2, the other end of described capacitor I I C2 are connected with the other end of described voltage stabilizing didoe III D3, the other end of described capacitor I C1, the other end of described capacitor I IIC3 and altogether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200489111U CN201226608Y (en) | 2008-06-06 | 2008-06-06 | Wide-voltage high-power LED drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200489111U CN201226608Y (en) | 2008-06-06 | 2008-06-06 | Wide-voltage high-power LED drive circuit |
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| Publication Number | Publication Date |
|---|---|
| CN201226608Y true CN201226608Y (en) | 2009-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200489111U Expired - Fee Related CN201226608Y (en) | 2008-06-06 | 2008-06-06 | Wide-voltage high-power LED drive circuit |
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| CN (1) | CN201226608Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101909376A (en) * | 2009-06-08 | 2010-12-08 | 海洋王照明科技股份有限公司 | High-power LED drive circuit |
| WO2012051753A1 (en) * | 2010-10-20 | 2012-04-26 | 上海东进装饰品有限公司 | Led lamp device integrated with boost control module |
| CN107120550A (en) * | 2017-06-22 | 2017-09-01 | 佛山市南海亮明电器有限公司 | The general low-voltage LED bulb of one kind exchange |
-
2008
- 2008-06-06 CN CNU2008200489111U patent/CN201226608Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101909376A (en) * | 2009-06-08 | 2010-12-08 | 海洋王照明科技股份有限公司 | High-power LED drive circuit |
| CN101909376B (en) * | 2009-06-08 | 2013-04-17 | 海洋王照明科技股份有限公司 | High-power LED drive circuit |
| WO2012051753A1 (en) * | 2010-10-20 | 2012-04-26 | 上海东进装饰品有限公司 | Led lamp device integrated with boost control module |
| US8502466B2 (en) | 2010-10-20 | 2013-08-06 | Shanghai Ori-Adv Decoration Co., Ltd | Apparatus for LED lights which integrates a boost converter control module |
| CN107120550A (en) * | 2017-06-22 | 2017-09-01 | 佛山市南海亮明电器有限公司 | The general low-voltage LED bulb of one kind exchange |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090422 Termination date: 20110606 |