CN201937927U - Constant current drive power supply for large-power light-emitting diode (LED) light - Google Patents
Constant current drive power supply for large-power light-emitting diode (LED) light Download PDFInfo
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- CN201937927U CN201937927U CN2011200422467U CN201120042246U CN201937927U CN 201937927 U CN201937927 U CN 201937927U CN 2011200422467 U CN2011200422467 U CN 2011200422467U CN 201120042246 U CN201120042246 U CN 201120042246U CN 201937927 U CN201937927 U CN 201937927U
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Abstract
The utility model discloses a constant current driving power supply for a large-power light-emitting diode (LED) light, which comprises a rectifying-filtering circuit, a high frequency high pressure pulse-width modulation (PWM) step-down controller, a reference power supply circuit, a high frequency high pressure switching tube, a switching tube drive circuit and a high-speed low resistance filtering circuit. The rectifying-filtering circuit, the high frequency high pressure PWM step-down controller, the high frequency high pressure switching tube and the high-speed low resistance filtering circuit are connected in sequence. The high frequency high pressure PWM step-down controller is also connected with the reference power supply circuit. The high frequency high pressure switching tube is connected with the switching tube drive circuit. Light-emitting diode light groups which are in series connection with each other are connected with the high-speed low resistance filtering circuit. The number of electrical elements utilized in the whole drive power supply circuit is greatly reduced. The damage probability and the cost are lowered. The heat generated by circuit loss is lower than that of the prior art. The working environment of the light-emitting diode is improved, thereby greatly increasing the working efficiency and the stability of the light-emitting diode.
Description
Technical field:
The utility model relates to a kind of constant-current driving power supply of high-powered LED lamp.
Background technology:
High-powered LED lamp on the market (LED street lamp for example, the LED projecting lamp, LED garden lamp etc.) be to assemble by a large amount of light-emitting diodes to form, the power circuit that drives these light-emitting diodes at present is to belong to constant voltage driving, its structure as shown in Figure 1, it is made of constant pressure source CV and constant-current source CC, voltage by constant pressure source CV output setting, a plurality of constant-current source CC in parallel then, many light-emitting diode L of each constant-current source CC serial or parallel connection (being generally below 12), drive the huge light-emitting diode of quantity like this and just need a large amount of constant-current source of configuration, because drive circuit and light-emitting diode are mounted in the idle narrow and small light fixture, so measuring big electronic devices and components can cause the lamp interior ambient temperature very high, the stable non-constant that causes light-emitting diode, operating efficiency is very low, and because the electric elements of configuration are more, and the damage probability of circuit is bigger, the life-span of whole lamp is short, cost is also expensive simultaneously, and this is the one of the main reasons that causes LED lamp fetch long price on the market.
Summary of the invention:
The purpose of this utility model is in order to overcome the shortcoming of above-mentioned prior art, provides that a kind of cost is low, good stability and the high high-powered LED lamp constant-current driving power supply of efficient.
For achieving the above object, the technical scheme that the utility model provides is: a kind of constant-current driving power supply of high-powered LED lamp, include current rectifying and wave filtering circuit, high-frequency and high-voltage PWM buck controller, the reference power source circuit, the high-frequency and high-voltage switching tube, switching tube drive circuit and High speed and low resistance filter circuit, current rectifying and wave filtering circuit, high-frequency and high-voltage PWM buck controller, the high-frequency and high-voltage switching tube is connected successively with the High speed and low resistance filter circuit, high-frequency and high-voltage PWM buck controller also is connected with the reference power source circuit, the high-frequency and high-voltage switching tube is connected with the switching tube drive circuit, and the LED light lamp group that is connected in series is connected with the High speed and low resistance filter circuit.
Also be connected with an EMC filter circuit and power factor between current rectifying and wave filtering circuit and the high-frequency and high-voltage PWM buck controller and adjust circuit.
High-frequency and high-voltage PWM buck controller is connected with overload protecting circuit and high tension protection circuit.
Be connected with the 2nd EMC filter circuit between high-frequency and high-voltage switching tube and the High speed and low resistance filter circuit.
After adopting technique scheme, the electric elements quantity that adopts on the whole driving power circuit significantly reduces, the probability and the cost that damage have been reduced, and the heat much less compared to existing technology that produces because of circuit loss, improve the operational environment of light-emitting diode, thereby improve the operating efficiency of LED light lamp, and the stability of light-emitting diode is greatly improved also.
Description of drawings:
Fig. 1 is the drive circuit figure of prior art high-powered LED lamp;
Fig. 2 is the structure chart of the utility model high-powered LED lamp constant-current driving power supply.
Embodiment:
Now 2 elaborate the utility model in conjunction with the accompanying drawings:
The constant-current driving power supply of the high-powered LED lamp of present embodiment includes current rectifying and wave filtering circuit 1; high-frequency and high-voltage PWM buck controller 2; reference power source circuit 3; high-frequency and high-voltage switching tube 4; switching tube drive circuit 5 and High speed and low resistance filter circuit 6; current rectifying and wave filtering circuit 1; high-frequency and high-voltage PWM buck controller 2; high-frequency and high-voltage switching tube 4 is connected successively with High speed and low resistance filter circuit 6; between current rectifying and wave filtering circuit 1 and high-frequency and high-voltage PWM buck controller 2, also be connected with an EMC filter circuit 7 and power factor and adjust circuit 8; be connected with the 2nd EMC filter circuit 9 between high-frequency and high-voltage switching tube 4 and the High speed and low resistance filter circuit 6; high-frequency and high-voltage PWM buck controller 2 also is connected with reference power source circuit 3; high-frequency and high-voltage switching tube 4 is connected with switching tube drive circuit 5; the LED light lamp group 10 that is connected in series is connected with High speed and low resistance filter circuit 6, and high-frequency and high-voltage PWM buck controller 2 is connected with overload protecting circuit 11 and high tension protection circuit 12.
Above-mentioned is illustrative rather than determinate with reference to embodiment to the description that this LED lamp constant-current driving power supply carries out, and therefore in the variation and the modification that do not break away under the utility model general plotting, should belong within the protection range of the present utility model.
Claims (4)
1. the constant-current driving power supply of a high-powered LED lamp, it is characterized in that: include current rectifying and wave filtering circuit, high-frequency and high-voltage PWM buck controller, the reference power source circuit, the high-frequency and high-voltage switching tube, switching tube drive circuit and High speed and low resistance filter circuit, current rectifying and wave filtering circuit, high-frequency and high-voltage PWM buck controller, the high-frequency and high-voltage switching tube is connected successively with the High speed and low resistance filter circuit, high-frequency and high-voltage PWM buck controller also is connected with the reference power source circuit, the high-frequency and high-voltage switching tube is connected with the switching tube drive circuit, and the LED light lamp group that is connected in series is connected with the High speed and low resistance filter circuit.
2. the constant-current driving power supply of a kind of high-powered LED lamp according to claim 1 is characterized in that: also be connected with an EMC filter circuit and power factor between current rectifying and wave filtering circuit and the high-frequency and high-voltage PWM buck controller and adjust circuit.
3. the constant-current driving power supply of a kind of high-powered LED lamp according to claim 1, it is characterized in that: high-frequency and high-voltage PWM buck controller is connected with overload protecting circuit and high tension protection circuit.
4. the constant-current driving power supply of a kind of high-powered LED lamp according to claim 1 is characterized in that: be connected with the 2nd EMC filter circuit between high-frequency and high-voltage switching tube and the High speed and low resistance filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200422467U CN201937927U (en) | 2011-02-18 | 2011-02-18 | Constant current drive power supply for large-power light-emitting diode (LED) light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200422467U CN201937927U (en) | 2011-02-18 | 2011-02-18 | Constant current drive power supply for large-power light-emitting diode (LED) light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201937927U true CN201937927U (en) | 2011-08-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200422467U Expired - Fee Related CN201937927U (en) | 2011-02-18 | 2011-02-18 | Constant current drive power supply for large-power light-emitting diode (LED) light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201937927U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9695993B2 (en) | 2013-04-26 | 2017-07-04 | Main Harbour International Limited | Long distance high intensity LED light with adjustable focus |
| CN108012370A (en) * | 2017-11-22 | 2018-05-08 | 中山市深力卓光电科技有限公司 | L ED driving power supply without electrolytic capacitor |
-
2011
- 2011-02-18 CN CN2011200422467U patent/CN201937927U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9695993B2 (en) | 2013-04-26 | 2017-07-04 | Main Harbour International Limited | Long distance high intensity LED light with adjustable focus |
| CN108012370A (en) * | 2017-11-22 | 2018-05-08 | 中山市深力卓光电科技有限公司 | L ED driving power supply without electrolytic capacitor |
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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: 20110817 Termination date: 20190218 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |