CN204482096U - A kind of LED drive circuit without the need to compensating - Google Patents
A kind of LED drive circuit without the need to compensating Download PDFInfo
- Publication number
- CN204482096U CN204482096U CN201520171643.2U CN201520171643U CN204482096U CN 204482096 U CN204482096 U CN 204482096U CN 201520171643 U CN201520171643 U CN 201520171643U CN 204482096 U CN204482096 U CN 204482096U
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- Prior art keywords
- need
- drive circuit
- led drive
- compensating
- direct voltage
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- Expired - Fee Related
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- 230000000087 stabilizing effect Effects 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a kind of LED drive circuit without the need to compensating, comprise direct voltage, multiple LED, driving chip, self-oscillating circuit, described driving chip pin comprises VIN, LX, ADJ, ISNS, GND, described self-oscillating circuit comprises resistance, inductance, described direct voltage is connected with VIN, direct voltage is connected with resistance, multiple LED, inductance and is connected with LX, and described ADJ is connected with dim signal, described GND ground connection.A kind of LED drive circuit without the need to compensating that the utility model provides, can realize constant current by the design of self-oscillating circuit without the need to compensating circuit, save system cost and volume greatly.Excellent line regulation and load regulation can be reached.
Description
Technical field
The utility model relates to a kind of LED drive circuit without the need to compensating, and belongs to LED Driving technique field.
Background technology
At present, great power LED development is very fast, synthesize main flow lighting source at various illuminated field, LED drive power will directly determine reliability and the life-span of LED, but thundering or under city's surge, be easy to cause the electric current of drive circuit unstable, thus affect the safety of LED drive power.
Utility model content
Object: in order to overcome the deficiencies in the prior art, the utility model provides a kind of LED drive circuit without the need to compensating.
Technical scheme: for solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of LED drive circuit without the need to compensating, comprise direct voltage, multiple LED, driving chip, self-oscillating circuit, described driving chip pin comprises VIN, LX, ADJ, ISNS, GND, described self-oscillating circuit comprises resistance, inductance, described direct voltage is connected with VIN, direct voltage is connected with resistance, multiple LED, inductance and is connected with LX, and described ADJ is connected with dim signal, described GND ground connection.
Described resistance input is also connected with ISNS, for current sample.
Also comprise voltage stabilizing didoe, described inductance output end is connected with voltage stabilizing didoe positive pole, and voltage stabilizing didoe negative pole is connected with VIN.
Also comprise protection electric capacity, described protection electric capacity and way circuit are in parallel.
Described direct voltage is set to 24V-35V.
Preferably, described driving chip is set to CL6808.
Beneficial effect: a kind of LED drive circuit without the need to compensating that the utility model provides, can realize constant current by the design of self-oscillating circuit without the need to compensating circuit, save system cost and volume greatly.Excellent line regulation and load regulation can be reached.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, a kind of LED drive circuit without the need to compensating, comprise direct voltage 1, multiple LED 2, driving chip 3, self-oscillating circuit, described driving chip 3 pin comprises VIN, LX, ADJ, ISNS, GND, described self-oscillating circuit comprises resistance 4, inductance 5, and described direct voltage 1 is connected with VIN, and direct voltage 1 is connected be connected with LX with resistance 4, multiple LED 2, inductance 5, described ADJ is connected with dim signal 8, described GND ground connection.
Described resistance 4 input is also connected with ISNS, for current sample.
Also comprise voltage stabilizing didoe 6, described inductance 5 output is connected with voltage stabilizing didoe 6 positive pole, and voltage stabilizing didoe 6 negative pole is connected with VIN.
Also comprise protection electric capacity 7, described protection electric capacity 7 is in parallel with way circuit.
Described direct voltage 1 is set to 24V-35V.
Preferably, described driving chip 3 is set to CL6808.
Driving chip pin: VIN: voltage input end, LX: output switching terminal, ADJ: dim signal input, ISNS: current sense input, GND: earth terminal.
The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (6)
1. the LED drive circuit without the need to compensating, comprise direct voltage, multiple LED, it is characterized in that: also comprise driving chip, self-oscillating circuit, described driving chip pin comprises VIN, LX, ADJ, ISNS, GND, described self-oscillating circuit comprises resistance, inductance, and described direct voltage is connected with VIN, and direct voltage is connected with resistance, multiple LED, inductance and is connected with LX, described ADJ is connected with dim signal, described GND ground connection.
2. a kind of LED drive circuit without the need to compensating according to claim 1, is characterized in that: described resistance input is also connected with ISNS.
3. a kind of LED drive circuit without the need to compensating according to claim 1, it is characterized in that: also comprise voltage stabilizing didoe, described inductance output end is connected with voltage stabilizing didoe positive pole, and voltage stabilizing didoe negative pole is connected with VIN.
4. a kind of LED drive circuit without the need to compensating according to claim 1, it is characterized in that: also comprise protection electric capacity, described protection electric capacity and way circuit are in parallel.
5. a kind of LED drive circuit without the need to compensating according to claim 1, is characterized in that: described direct voltage is set to 24V.
6. a kind of LED drive circuit without the need to compensating according to claim 1, is characterized in that: described driving chip is set to CL6808.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520171643.2U CN204482096U (en) | 2015-03-26 | 2015-03-26 | A kind of LED drive circuit without the need to compensating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520171643.2U CN204482096U (en) | 2015-03-26 | 2015-03-26 | A kind of LED drive circuit without the need to compensating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204482096U true CN204482096U (en) | 2015-07-15 |
Family
ID=53637866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520171643.2U Expired - Fee Related CN204482096U (en) | 2015-03-26 | 2015-03-26 | A kind of LED drive circuit without the need to compensating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204482096U (en) |
-
2015
- 2015-03-26 CN CN201520171643.2U patent/CN204482096U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161011 Address after: 528434 Fu Fu town, Guangdong City, Zhongshan province Fu West Road Patentee after: Zhongshan technetium photoelectric Co., Ltd. Address before: Zhenjiang City, Jiangsu Province, 212000 Jingkou District Road No. 301, building 206, room 2141 Patentee before: Li Zhe |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20170326 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |