CN206077741U - A kind of high-power LED drive circuit for MR16 - Google Patents
A kind of high-power LED drive circuit for MR16 Download PDFInfo
- Publication number
- CN206077741U CN206077741U CN201620812739.7U CN201620812739U CN206077741U CN 206077741 U CN206077741 U CN 206077741U CN 201620812739 U CN201620812739 U CN 201620812739U CN 206077741 U CN206077741 U CN 206077741U
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- China
- Prior art keywords
- pin
- light group
- led light
- resistance
- drive circuit
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- 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
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Abstract
A kind of high-power LED drive circuit for MR16, which includes LED light group, control chip CF5807, resistance Rs, inductance L1 and Schottky diode, the pin VIN of the control chip CF5807 is voltage input end, which is connected with voltage source, pin LX is output switching terminal, its Jing inductance L1 successively, LED light group and resistance Rs are connected with voltage source, the Schottky diode is connected between pin VIN and pin LX, inductance L1, LED light group and resistance Rs constitute a high side output current sensing circuit, the running of the device is between 6V to 35V, there is provided the adjustable up to output current of 1.2A in outside.According to the voltage and outer member of supply of electric power, up to 32 watts of output can be provided, apply to the LED light group that high efficiency drive is made up of the single or multiple series connection light emitting diodes that the power supply higher than LED forward conduction voltages is powered.
Description
Technical field
This utility model is related to mechanical field, and in particular to a kind of high-power LED drive circuit for MR16.
Background technology
LED is existing to have a good development prospect due to energy-saving and environmental protection, but LED need drive circuit to make which is shinny,
It is luminous, when LED is in LED replacement low-voltage halogen lamp application, automotive lighting, low-voltage lighting industry, LED standby illumination, shinny mark
During the scene application such as will, emergency lighting system, LCD TV backlight, need great power LED, its to drive circuit need it is defeated
Go out high current.
Utility model content
In order to solve the above problems, this utility model provides a kind of high-power LED drive circuit for MR16：
A kind of high-power LED drive circuit for MR16, which includes LED light group, control chip, resistance Rs, inductance L1
And Schottky diode, the pin VIN of the control chip is voltage input end, and which is connected with voltage source, and pin LX is switch
Outfan, its successively Jing inductance L1, LED light group and resistance Rs be connected with voltage source, the Schottky diode is connected on pin
Between VIN and pin LX.
The pin ISNS of the control chip and the connection of the node between resistance Rs and LED light group.
The pin ADJ of the control chip is adjustable side.
Electric capacity C1 is provided with, which is connected between voltage source and ground GND.
This utility model has the advantages that：Inductance L1, LED light group and resistance Rs constitute a high side output current
Sensing circuit, the running of the device is between 6V to 35V voltage sources, there is provided the adjustable up to output of 1.2A in outside
Electric current.According to the voltage and outer member of supply of electric power, up to 32 watts of output can be provided, apply to high efficiency drive by
The LED light group of the single or multiple series connection light emitting diode compositions powered higher than the power supply of LED forward conduction voltages.
Description of the drawings
Accompanying drawing 1 is circuit theory diagrams of the present utility model.
Accompanying drawing 2 is control chip internal circuit diagram of the present utility model.
Specific embodiment
This utility model is further described with embodiment below in conjunction with the accompanying drawings.
A kind of high-power LED drive circuit for MR16, it include LED light group, control chip CF5807, resistance Rs,
Inductance L1 and Schottky diode, the pin VIN of the control chip CF5807 is voltage input end, and which is connected with voltage source,
Pin LX be output switching terminal, its successively Jing inductance L1, LED light group and resistance Rs be connected with voltage source, two pole of the Schottky
Pipe is connected between pin VIN and pin LX, and inductance L1, LED light group and resistance Rs constitute a high side output current sensing electricity
Road, the running of the device is between 6V to 35V voltage sources, there is provided the adjustable up to output current of 1.2A in outside.
According to the voltage and outer member of supply of electric power, up to 32 watts of output can be provided, apply to high efficiency drive by being higher than
The LED light group of the single or multiple series connection light emitting diode compositions that the power supply of LED forward conduction voltages is powered.
The pin ISNS of the control chip CF5807 and the connection of the node between resistance Rs and LED light group, carry out reality
When current detecting.
The pin ADJ of the control chip CF5807 is adjustable side, is added in by pwm signal on pin ADJ, is adjusted
Output current, certainly also can on the branch road of LED light group series resistance setting average output current；Pin ADJ is simultaneously
It is high level Enable Pin, the voltage on pin ADJ plus less than 0.4V will turn off output current and switch motion, make the control core
Piece enters low-power consumption standby state.
Electric capacity C1 is provided with, as shunt capacitance, which is connected between voltage source and ground GND.
Obviously, above-described embodiment of the present utility model is merely to illustrate that this utility model example, and not
Restriction to embodiment of the present utility model.For those of ordinary skill in the field, on the basis of described above
On can also make the change or variation of other multi-forms.There is no need to give poor example to all of embodiment.
And these belong to connotation of the present utility model it is amplified obvious change or variation still fall within this utility model
Protection domain.
Claims (4)
1. a kind of high-power LED drive circuit for MR16, it is characterised in that：Which includes LED light group, control chip, resistance
Rs, inductance L1 and Schottky diode, the pin VIN of the control chip is voltage input end, and which is connected with voltage source, pin
LX is output switching terminal, its successively Jing inductance L1, LED light group and resistance Rs be connected with voltage source, the Schottky diode string
It is associated between pin VIN and pin LX.
2. a kind of high-power LED drive circuit for MR16 according to claim 1, it is characterised in that：The control
The pin ISNS of chip and the connection of the node between resistance Rs and LED light group.
3. a kind of high-power LED drive circuit for MR16 according to claim 1, it is characterised in that：The control
The pin ADJ of chip is adjustable side.
4. a kind of high-power LED drive circuit for MR16 according to claim 1, it is characterised in that：It is provided with electric capacity
C1, which is connected between voltage source and ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620812739.7U CN206077741U (en) | 2016-07-18 | 2016-07-18 | A kind of high-power LED drive circuit for MR16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620812739.7U CN206077741U (en) | 2016-07-18 | 2016-07-18 | A kind of high-power LED drive circuit for MR16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206077741U true CN206077741U (en) | 2017-04-05 |
Family
ID=58425322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620812739.7U Expired - Fee Related CN206077741U (en) | 2016-07-18 | 2016-07-18 | A kind of high-power LED drive circuit for MR16 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206077741U (en) |
-
2016
- 2016-07-18 CN CN201620812739.7U patent/CN206077741U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170405 Termination date: 20180718 |