CN202396059U - Led driving power supply - Google Patents
Led driving power supply Download PDFInfo
- Publication number
- CN202396059U CN202396059U CN2012200040378U CN201220004037U CN202396059U CN 202396059 U CN202396059 U CN 202396059U CN 2012200040378 U CN2012200040378 U CN 2012200040378U CN 201220004037 U CN201220004037 U CN 201220004037U CN 202396059 U CN202396059 U CN 202396059U
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- Prior art keywords
- led driving
- power supply
- driving power
- led
- rectifier bridges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses an LED driving power supply comprising a direct-current power supply module and an LED driving module which are connected with each other, wherein the direct-current power supply module comprises two rectifier bridges; the alternating-current input ends of the two rectifier bridges are connected with the electric supply; inductance is connected between the positive alternating-current input end of the first rectifier bridge and the electric supply; the negative direct-current output end is connected with the negative direct-current output end through a first diode; and the positive direct-current output ends of the two rectifier bridges are connected with the input end of the LED driving module. The LED driving power supply solves the problems that in the prior arts, for the chronic leakage of the electrolytic capacitor in the LED driving power supply, the more time passes, the more capacitance reduces until the capacitance is invalid, thus influencing the service life of the LED lamp. And by means of the new design idea, the other component with long service life replaces the electrolytic capacitor so as to significantly prolonging the service life of the LED lamp.
Description
Technical field
The utility model has related to a kind of LED driving power, belongs to electronic technology field.
Background technology
Along with the development of LED technology, the LED lamp is because it has environmental protection and energy saving, and power consumption bench advantage in little useful life obtains application more and more widely in low-light level illumination even daily life illumination.The LED lamp need be operated in the low-voltage direct state, when adopting mains-supplied, must be rectified into DC power supply, yet according to the number of LED, best bet is to adopt the switching regulator stabilized current power supply.
And the voltage ripple factor after the rectification is bigger, comes filtering so will add electrolysis electric capacity in actual use, but after adding electrochemical capacitor, ripple factor has improved, but power factor has reduced.
And electrochemical capacitor is least stable from entire circuit, and the chronic leakage of the electrolyte in the electrochemical capacitor is that inevitably the time, long more capacitance can slowly diminish, until invalid.Compare with the LED life-span and to differ greatly, thereby influence life-span of LED light fixture.
The utility model content
The utility model technical problem to be solved provides a kind of LED driving power, does not adopt any electrochemical capacitor to realize to LED driving power being provided, and has prolonged LED light fixture working life greatly.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopted is:
A kind of LED driving power; Comprise the DC power supplier and the LED driver module that are connected; Said DC power supplier comprises two rectifier bridges that ac input end is electrically connected with the city; Wherein be connected with inductance between the forward ac input end of first rectifier bridge and the civil power, the negative sense dc output end is connected with the negative sense dc output end of second rectifier bridge through first diode, and the forward dc output of said two rectifier bridges is connected with the input of LED driver module.
Aforementioned LED driving power is characterized in that: be connected with protective resistance between the forward ac input end of said two rectifier bridges and the civil power.
Aforesaid LED driving power is characterized in that: the forward dc output of said two rectifier bridges is connected with high-frequency filter capacitor.
Aforesaid LED driving power is characterized in that: the forward dc output of said two rectifier bridges is connected with said LED driver module through second diode.
The beneficial effect of the utility model is: replaced electrochemical capacitor through two rectifier bridges, avoided causing because of the chronic leakage of the electrolyte in the electrochemical capacitor problem of the LED lamp lost of life, prolonged LED light fixture working life greatly.
Description of drawings
Fig. 1 is that the circuit of the utility model LED driving power connects sketch map.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.Following examples only are used for more clearly explaining the technical scheme of the utility model, and can not limit the protection range of the utility model with this.
As shown in Figure 1; A kind of LED driving power; Comprise the DC power supplier 1 and LED driver module 2 that are connected; Said DC power supplier 1 comprises two rectifier bridges that ac input end is electrically connected with the city; Wherein be connected with inductance L 1 between the forward ac input end of the first rectifier bridge D1 and the civil power, the negative sense dc output end is connected with the negative sense dc output end of the second rectifier bridge D2 through the first diode D3, and the forward dc output of said two rectifier bridges is connected with the input of LED driver module 2; Be connected with protective resistance FS between the forward ac input end of two rectifier bridges and the civil power, the forward dc output of two rectifier bridges is connected with high-frequency filter capacitor C1.
L1 is the magnetic core inductance, and the sensibility reciprocal size is decided by the alternating current size, has played the power factor compensation effect.Protective resistance FS, magnetic core inductance L 1, the first rectification D1, the second rectification D2, the first diode D3, high-frequency filter capacitor C1 have formed power circuit; Export through the direct current of forming behind the C1 High frequency filter after the D2 of D1 rectification and no process phase shift and the D3 rectification stack after the process L1 phase shift, IC1 provides DC power supply for integrated chip.
The forward dc output of said two rectifier bridges is connected with said LED driver module through the second diode D4; The output of second diode is connected with; Capacitor C 2, the second diode D4 and capacitor C 2 have been formed integrated chip IC1 power supply circuits, and these power supply circuits have guaranteed the IC1 steady operation.
The PWM_D pin of integrated chip IC1, VDD pin, LD pin are connected with capacitor C 3, and C3 is the 1UF ROHS, R
OscPin connects resistance R 1, and R1 adopts 200K resistance, and the operating frequency that makes IC1 is in 100KHz operate as normal under high ripple.
The GATA pin of integrated chip IC1 connects the grid of FET Q1, and the CS pin connects sampling resistor R2, and sampling resistor R2 has determined the LED operating current.Be connected with electric capacity L2 between the drain electrode of FET Q1 and the LED lamp.
Work as L2=1.2mH, during R2=1 Ω; Output voltage 72V, operating current are 120mA;
Work as L2=1.2mH, during R2=0.667 Ω; Output voltage 62V, operating current are 240mA;
Work as L2=0.6mH, during R2=0.667 Ω; Output voltage 16V, operating current are 350mA;
LED fluorescent lamp (60cm, 120cm) and the requirement of great power LED bulb lamp have been satisfied.
In sum, a kind of LED driving power that the utility model provides, owing to do not adopted electrochemical capacitor, other components and parts working lives and LED are same magnitudes, have prolonged LED light fixture working life greatly.
More than show and described basic principle, principal character and the advantage of the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection range by appending claims and equivalent circle thereof.
Claims (4)
1. LED driving power; Comprise the DC power supplier (1) and the LED driver module (2) that are connected; It is characterized in that: said DC power supplier (1) comprises two rectifier bridges that ac input end is electrically connected with the city; Wherein be connected with inductance (L1) between the forward ac input end of first rectifier bridge (D1) and the civil power; The negative sense dc output end is connected through the negative sense dc output end of first diode (D3) with second rectifier bridge (D2), and the forward dc output of said two rectifier bridges is connected with the input of LED driver module (2).
2. according to the said LED driving power of claim 1, it is characterized in that: be connected with protective resistance (FS) between the forward ac input end of said two rectifier bridges and the civil power.
3. LED driving power according to claim 1 and 2 is characterized in that: the forward dc output of said two rectifier bridges is connected with high-frequency filter capacitor (C1).
4. LED driving power according to claim 3 is characterized in that: the forward dc output of said two rectifier bridges is connected with said LED driver module (2) through second diode (D4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200040378U CN202396059U (en) | 2012-01-06 | 2012-01-06 | Led driving power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200040378U CN202396059U (en) | 2012-01-06 | 2012-01-06 | Led driving power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202396059U true CN202396059U (en) | 2012-08-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200040378U Expired - Fee Related CN202396059U (en) | 2012-01-06 | 2012-01-06 | Led driving power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202396059U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102438379A (en) * | 2012-01-06 | 2012-05-02 | 昆山市华英精密模具工业有限公司 | LED (Light Emitting Diode) driving power supply |
| CN103619093A (en) * | 2013-10-29 | 2014-03-05 | 汤志新 | A LED integrated light source |
| CN105230126A (en) * | 2013-03-21 | 2016-01-06 | 首尔半导体株式会社 | Use the LED drive circuit of doube bridge diode and comprise its LED light device |
-
2012
- 2012-01-06 CN CN2012200040378U patent/CN202396059U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102438379A (en) * | 2012-01-06 | 2012-05-02 | 昆山市华英精密模具工业有限公司 | LED (Light Emitting Diode) driving power supply |
| CN105230126A (en) * | 2013-03-21 | 2016-01-06 | 首尔半导体株式会社 | Use the LED drive circuit of doube bridge diode and comprise its LED light device |
| US9848470B2 (en) | 2013-03-21 | 2017-12-19 | Seoul Semiconductor Co., Ltd. | LED driving circuit using double bridge diode and LED illumination device comprising same |
| CN105230126B (en) * | 2013-03-21 | 2018-01-02 | 首尔半导体株式会社 | LED drive circuit using doube bridge diode and the LED light device including it |
| CN103619093A (en) * | 2013-10-29 | 2014-03-05 | 汤志新 | A LED integrated light source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU K-LED TECHNOLOGY CO., LTD. Free format text: FORMER NAME: KUNSHAN HUAYING PREC DIE INDUSTRIAL CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 215316 No. 239 South hope road, Suzhou, Jiangsu, Kunshan Patentee after: Jiangsu Huaying Guangbao Technology Co., Ltd. Address before: 215316 No. 239 South hope road, Suzhou, Jiangsu, Kunshan Patentee before: Kunshan Haying Precision Tool Industry Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20210106 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |