CN206422955U - A kind of linear LED drive circuit - Google Patents
A kind of linear LED drive circuit Download PDFInfo
- Publication number
- CN206422955U CN206422955U CN201720141760.3U CN201720141760U CN206422955U CN 206422955 U CN206422955 U CN 206422955U CN 201720141760 U CN201720141760 U CN 201720141760U CN 206422955 U CN206422955 U CN 206422955U
- Authority
- CN
- China
- Prior art keywords
- lamp module
- led lamp
- control chip
- circuit
- led
- 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
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Classifications
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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
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a kind of linear LED drive circuit, including rectifier circuit, LED lamp module, limit detection circuit, drive control chip；It could be used without the scheme of inductance, electrochemical capacitor, the life-span of LED can be caused to greatly prolong, application scheme is simple but performance is still excellent, using high-voltage linear constant current technology, compared with existing buck circuits, peripheral circuit is simplified, and whole BOM costs are low, the high standard such as America and Europe market can be met, is the optimal selection of room lighting power supply.
Description
Technical field
The utility model is related to integrated circuit fields, more particularly to a kind of linear LED drive circuit.
Background technology
Existing LED drivings use BUCK circuits, and periphery needs inductance, electrochemical capacitor etc., and driving cost is of a relatively high.
In view of this, the present inventor specially devises a kind of linear LED drive circuit, and thus this case produces.
Utility model content
The purpose of this utility model is a kind of linear LED drive circuit of offer, could be used without the side of inductance, electrochemical capacitor
Case, can cause the life-span of LED to greatly prolong, and application scheme is simple but performance is still excellent, can meet American-European contour rule
Lattice market, is the optimal selection of room lighting power supply.
To achieve these goals, the technical solution adopted in the utility model is as follows：
Including rectifier circuit, LED lamp module, limit detection circuit, drive control chip；
The input of the rectifier circuit, is electrically connected with exchanging；The output end of the rectifier circuit, with the LED
Lamp module is connected with limit detection circuit, for being direct current by the AC rectification, and is sent to the LED lamp module
Input, is that the LED lamp module and limit detection circuit provide system voltage；
The output end of the LED lamp module, is connected with the input of the drive control chip, and by LED lamp module
Electric current is sent to the input of the drive control chip；
The output end of the limit detection circuit, the input with the drive control chip, for the system is electric
Pressure is converted to system power, and the system power is sent into the drive control chip；
The input of the drive control chip, output end respectively with the limit detection circuit, LED lamp module it is defeated
Go out end to be connected, for detecting electric current and system power with being compared the LED lamp module, adjust the voltage of the LED lamp module
And electric current.
Preferably, the limit detection circuit includes a resistance.
Preferably, the drive control chip is provided with metal-oxide-semiconductor.
The beneficial effects of the utility model are：
A kind of linear LED drive circuit that the utility model is provided, could be used without the scheme of inductance, electrochemical capacitor, can be with
So that the life-span of LED greatly prolongs, application scheme is simple but performance is still excellent, using high-voltage linear constant current technology, with showing
Some buck circuits are compared, and peripheral circuit is simplified, and whole BOM costs are low, can meet the high standard such as America and Europe market, are indoor photographs
The optimal selection of bright power supply.
Brief description of the drawings
Fig. 1 is system block diagram of the present utility model；
Fig. 2 is embodiment schematic diagram of the present utility model；
Embodiment
As shown in figure 1, a kind of linear LED drive circuit, including rectifier circuit, LED lamp module, limit detection circuit,
Drive control chip；
The input of rectifier circuit, is electrically connected with exchanging；The output end of rectifier circuit, with LED lamp module and current limliting
Detect that circuit is connected, for being direct current by AC rectification, and be sent to the input of LED lamp module, be LED lamp module and
Limit detection circuit provides system voltage；
The output end of LED lamp module, is connected with the input of drive control chip, and the electric current of LED lamp module is transmitted
To the input of drive control chip；
The output end of limit detection circuit, the input with drive control chip, for system voltage to be converted into system
Electric current, and system power is sent to drive control chip；
The input of drive control chip, output end, the output end phase of LED lamp module respectively with limit detection circuit
Even, for detecting electric current and system power with being compared LED lamp module, the voltage and current of LED lamp module is adjusted.
The scheme of inductance, electrochemical capacitor is could be used without, the life-span of LED can be caused to greatly prolong, application scheme is simple
But performance is still excellent, using high-voltage linear constant current technology, compared with existing buck circuits, peripheral circuit is simplified, whole BOM
Cost is low, can meet the high standard such as America and Europe market, is the optimal selection of room lighting power supply.
As shown in Fig. 2 limit detection circuit includes a resistance.
Drive control chip IC is provided with metal-oxide-semiconductor.
The present embodiment, the utility model circuit is driven using high-voltage linear constant current, and this circuit only needs to a rectifier bridge
Heap one drive control chip IC of collocation and current limliting detection resistance R1 can power to LED.
The operation principle of the present embodiment：
AC alternating currents are rectified into direct current by rectifier circuit DB1 bridge heaps, are powered to LED lamp module, drive control core
There is metal-oxide-semiconductor to carry out partial pressure inside piece IC, to ensure the voltage on different input voltage point LEDs all for constant, drive
Dynamic control chip IC REXT pin connecting resistances R1 carries out current limliting detection, to ensure the electric current of circuit as a steady state value.
Above-described embodiment and schema and non-limiting product form of the present utility model and style, any art
Appropriate change or modification that those of ordinary skill is done to it, all should be regarded as not departing from patent category of the present utility model.
Claims (3)
1. a kind of linear LED drive circuit, it is characterised in that：Including rectifier circuit, LED lamp module, limit detection circuit, drive
Dynamic control chip；
The input of the rectifier circuit, is electrically connected with exchanging；The output end of the rectifier circuit, with the LED mould
Block is connected with limit detection circuit, for being direct current by the AC rectification, and is sent to the input of the LED lamp module
End, is that the LED lamp module and limit detection circuit provide system voltage；
The output end of the LED lamp module, is connected with the input of the drive control chip, and by the electric current of LED lamp module
It is sent to the input of the drive control chip；
The output end of the limit detection circuit, the input with the drive control chip, for the system voltage to be turned
System power is changed to, and the system power is sent to the drive control chip；
The input of the drive control chip, output end, the output end of LED lamp module respectively with the limit detection circuit
It is connected, for detecting electric current and system power with being compared the LED lamp module, adjusts the voltage and electricity of the LED lamp module
Stream.
2. a kind of linear LED drive circuit according to claim 1, it is characterised in that：The limit detection circuit includes
One resistance.
3. a kind of linear LED drive circuit according to claim 2, it is characterised in that：The drive control chip is provided with
Metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720141760.3U CN206422955U (en) | 2017-02-16 | 2017-02-16 | A kind of linear LED drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720141760.3U CN206422955U (en) | 2017-02-16 | 2017-02-16 | A kind of linear LED drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206422955U true CN206422955U (en) | 2017-08-18 |
Family
ID=59570250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720141760.3U Expired - Fee Related CN206422955U (en) | 2017-02-16 | 2017-02-16 | A kind of linear LED drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206422955U (en) |
-
2017
- 2017-02-16 CN CN201720141760.3U patent/CN206422955U/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 |
Granted publication date: 20170818 Termination date: 20190216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |