CN201315691Y - Power control circuit of high-power LED lamp - Google Patents
Power control circuit of high-power LED lamp Download PDFInfo
- Publication number
- CN201315691Y CN201315691Y CNU2009201310103U CN200920131010U CN201315691Y CN 201315691 Y CN201315691 Y CN 201315691Y CN U2009201310103 U CNU2009201310103 U CN U2009201310103U CN 200920131010 U CN200920131010 U CN 200920131010U CN 201315691 Y CN201315691 Y CN 201315691Y
- Authority
- CN
- China
- Prior art keywords
- transformer
- led lamp
- control circuit
- modulation drive
- rectifier bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The utility model discloses a power control circuit of a high-power LED lamp, which comprises a rectifier bridge, a pulsing driving IC, an MOS tube and a transformer. An input power corrects a passive power factor through the rectifier bridge, and then the passive power factor is input to the pulsing driving IC; the pulsing driving IC generates a switching frequency on the MOS tube to control the switching-on and switching-off of the MOS tube; and the transformer is charged during the switching-on process, and the transformer outputs voltage to lighten LEDs. Compared with the prior art, the LED lamp has constant current in the whole circuit loop, the luminescence brightness of the LEDs is identical, and the problems of twinkling or uneven brightness can be avoided.
Description
Technical field:
The utility model belongs to the normal lighting field, specifically is a kind of LED fluorescent lamp, further is a kind of high-powered LED lamp power control circuit.
Background technology:
The LED fluorescent lamp is applied in lighting field and has extra long life as a kind of new type light source, and is energy-efficient, safe and reliable, characteristics such as environmental protection; Economize on electricity can be mated in 3.3～265 volts of combined-voltage scopes more than 80%.
The supply power mode of LED fluorescent lamp adopts direct current mostly at present, the power supply of adopting all is to pass through civil power, and then convert interchange to direct current by rectifier bridge, because the difference of lamp onboard led quantity, need make voltage control on each LED lamp in certain scope, otherwise will cause LED lamp luminosity to differ, also can occur flicker sometimes.
Summary of the invention:
For addressing the above problem, the purpose of this utility model is to provide a kind of high-powered LED lamp power control circuit.
For achieving the above object, the utility model is mainly by the following technical solutions:
A kind of high-powered LED lamp power control circuit, include rectifier bridge heap, pulse modulation drive IC, metal-oxide-semiconductor and transformer, the input power supply is undertaken being input to the pulse modulation drive IC after the PPFC (Passive Power Factor Correction) by the rectifier bridge heap, the pulse modulation drive IC produces the conducting of a switching frequency control metal-oxide-semiconductor and closes on metal-oxide-semiconductor, in conduction period transformer is charged, and LED is discharged by the transformer output voltage.
Described input power supply carries out electronic jamming denoising by this inductance to the input power supply by being provided with inductance between the rectifier bridge heap.
Be connected by fast recovery diode between described transformer and the LED, transformer discharges to LED by fast recovery diode.
Described pulse modulation drive IC is connected with transformer by sample resistance, by sample resistance paired pulses modulation drive IC input voltage is taken a sample.
The utility model by the pulse modulation drive IC on metal-oxide-semiconductor, produce a switching frequency with the conducting of control metal-oxide-semiconductor with close, the transformer output voltage carries out LED discharge through fast recovery diode, thereby realizes that whole loop reaches the constant current effect.Compared with prior art, the LED lamp current is constant in the whole loop of the utility model, and the LED luminosity is the same, can not occur glimmering or problem that brightness differs.
Description of drawings:
Fig. 1 is that the utility model pulse modulation drive IC power supply is to LED discharge principle figure.
Fig. 2 is the utility model input power supply passive power factor correcting circuit figure.
Embodiment:
Core concept of the present utility model is: at first import mains supply and undertaken being input to the pulse modulation drive IC after the PPFC (Passive Power Factor Correction) by the rectifier bridge heap, the pulse modulation drive IC produces the conducting of a switching frequency control metal-oxide-semiconductor and closes on metal-oxide-semiconductor, in conduction period transformer is charged, when being charged to the certain voltage threshold values, MOS detects the voltage valve in resistance upper end over the ground and starts, this moment, metal-oxide-semiconductor was not worked, carry out the discharge to LED by the transformer output voltage through fast recovery diode, metal-oxide-semiconductor is started working again when waiting following one-period to begin.Two parallel resistor of having connected in the output loop are passed through the voltage sampling of optocoupler to whole output loop then, and the threshold current that converts optocoupler to comes the output driving force of control IC, thereby reach the effect of constant current.
For setting forth thought of the present utility model and purpose, the utility model is described further below in conjunction with the drawings and specific embodiments.
See also Fig. 1～shown in Figure 2, the utility model is a kind of high-powered LED lamp power control circuit, it mainly is made up of importation and output, wherein the importation is the utility model input power supply passive power factor correcting circuit figure (see figure 2), mainly comprise capacitor C 1, inductance L 1 and rectifier bridge heap D1MBBS, wherein inductance L 1 is connected with the AC end of rectifier bridge heap D1MBBS, and 2, the 4 pin inputs of rectifier bridge heap D1MBBS are connected with C2, D2 and D4, C3;
At first the AC220V electric main carries out EMI (electronic jamming) denoising sound by fuse F1 through capacitor C 1, inductance L 1, be input to rectifier bridge heap D1MBBS then and carry out rectification and carry out PPFC (Passive Power Factor Correction), output to the pulse modulation drive IC by 2,4 pin afterwards.
As shown in Figure 1, output includes pulse modulation drive IC U1, metal-oxide-semiconductor Q1 and sample resistance R6, R7, transformer T1, resistance R 8, R9, R11, wherein 2 pin of U1,5 pin insert the signal of telecommunication, 6 pin then are connected with metal-oxide-semiconductor Q1 by D7, metal-oxide-semiconductor Q1 one end is connected with No. 5 pin of U1 by detection resistance R 4, diode D8, the other end then is connected with transformer T1 by sample resistance R7, and transformer T1 then discharges to LED by fast recovery diode.
Wherein the circuit theory of output is: AC voltage carries out passive PFC correction after piling rectification through the D1 bridge, then close in the switching frequency control metal-oxide-semiconductor conducting that produces on the metal-oxide-semiconductor about a 50K afterwards through the drive IC of PWM, in conduction period transformer is charged, when being charged to the certain voltage threshold values, MOS detects the voltage valve in resistance upper end over the ground and starts, this moment, metal-oxide-semiconductor was not worked, carry out the discharge to LED by the transformer output voltage through fast recovery diode, metal-oxide-semiconductor is started working again when waiting following one-period to begin.Two parallel resistor of having connected in the output loop are passed through the voltage sampling of optocoupler to whole output loop then, and the threshold current that converts optocoupler to comes the output driving force of control IC, thereby reach the effect of constant current.
More than a kind of high-powered LED lamp power control circuit provided by the utility model is described in detail, used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (4)
1, a kind of high-powered LED lamp power control circuit, it is characterized in that including rectifier bridge heap, pulse modulation drive IC, metal-oxide-semiconductor and transformer, the input power supply is undertaken being input to the pulse modulation drive IC after the PPFC (Passive Power Factor Correction) by the rectifier bridge heap, the pulse modulation drive IC produces the conducting of a switching frequency control metal-oxide-semiconductor and closes on metal-oxide-semiconductor, in conduction period transformer is charged, and LED is discharged by the transformer output voltage.
2, high-powered LED lamp power control circuit according to claim 1 is characterized in that described input power supply by being provided with inductance between the rectifier bridge heap, carries out the electronic jamming denoising by this inductance to the input power supply.
3, high-powered LED lamp power control circuit according to claim 1 is characterized in that being connected by fast recovery diode between described transformer and the LED, and transformer discharges to LED by fast recovery diode.
4, high-powered LED lamp power control circuit according to claim 1 is characterized in that described pulse modulation drive IC is connected with transformer by sample resistance, by sample resistance paired pulses modulation drive IC input voltage is taken a sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201310103U CN201315691Y (en) | 2009-04-18 | 2009-04-18 | Power control circuit of high-power LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201310103U CN201315691Y (en) | 2009-04-18 | 2009-04-18 | Power control circuit of high-power LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201315691Y true CN201315691Y (en) | 2009-09-23 |
Family
ID=41127495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201310103U Expired - Fee Related CN201315691Y (en) | 2009-04-18 | 2009-04-18 | Power control circuit of high-power LED lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201315691Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI450636B (en) * | 2011-10-26 | 2014-08-21 | Hon Hai Prec Ind Co Ltd | Luminance adjusting circuit of led |
| CN106856640A (en) * | 2015-12-08 | 2017-06-16 | 池州学院 | A kind of LED drive power |
-
2009
- 2009-04-18 CN CNU2009201310103U patent/CN201315691Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI450636B (en) * | 2011-10-26 | 2014-08-21 | Hon Hai Prec Ind Co Ltd | Luminance adjusting circuit of led |
| CN106856640A (en) * | 2015-12-08 | 2017-06-16 | 池州学院 | A kind of LED drive power |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103442501B (en) | Forced constant flow source dimming LED (Light Emitting Diode) lamp | |
| CN103079320B (en) | LED (Light Emitting Diode) constant current controller and LED constant current drive circuit | |
| CN103945616B (en) | A kind of light fixture and LED drive device thereof | |
| CN105491723B (en) | A kind of light adjusting circuit system | |
| CN201860494U (en) | Light-emitting diode driving circuit with light modulating sequential control | |
| CN201550315U (en) | LED driving circuit | |
| CN203896538U (en) | LED driving power source employing single switch tube and two Buck-Boost circuits in cascade connection | |
| CN202282885U (en) | LED road lamp driving power supply | |
| CN201315691Y (en) | Power control circuit of high-power LED lamp | |
| CN202425146U (en) | Drive circuit of LED (Light-Emitting Diode) lighting device | |
| CN104023445A (en) | LED driving circuit | |
| CN204119604U (en) | The Multi-channel high-frequency impulse circuit of LED lamp | |
| CN202172506U (en) | Light emitting diode (LED) drive circuit and constant current feedback circuit in same | |
| CN204836732U (en) | LED way lamp module group | |
| CN204559957U (en) | The light modulation driver circuit of a kind of LED | |
| CN203814005U (en) | LED light modulation circuit with power-on trigger lock memory function | |
| CN102510608A (en) | High-power LED (light emitting diode) driving circuit | |
| CN202101074U (en) | Composite LED (light emitting diode) voice-controlled lighting lamp | |
| CN202135359U (en) | LED energy saving lamp control circuit possessing over-voltage protection function | |
| CN202310223U (en) | Stable-sampling-voltage LED (light-emitting diode) constant-current drive power source | |
| CN206237643U (en) | A kind of linear constant current controls LED | |
| CN104797044A (en) | LED dimming driving circuit and LED dimming driving method | |
| CN205142616U (en) | LED constant current driving circuit | |
| CN204836733U (en) | No electrolytic capacitor driver | |
| CN203645889U (en) | LED lamp driving power supply adopting PFC functional chip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN PUGUANG ENERGY SAVING TECHNOLOGY CO., LTD Free format text: FORMER OWNER: SHENZHEN FENGTAIJING ELECTRONIC TECHNOLOGY CO., LTD. Effective date: 20141217 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141217 Address after: 518000, No. 2, No. 401, industrial zone, deep Feng Road, Henggang street, Longgang District, Guangdong, Shenzhen Patentee after: Shenzhen Puguang Energy Saving Technology Co., Ltd. Address before: 5, 2 floor, No. six, Macheng street, Henggang, Longgang District, Shenzhen, Guangdong, 518000 Patentee before: Shenzhen Fengtaijing Optoelectronics Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090923 Termination date: 20150418 |
|
| EXPY | Termination of patent right or utility model |