CN207732414U - The short-circuit protection circuit of boosting LED drivings for solar controller - Google Patents
The short-circuit protection circuit of boosting LED drivings for solar controller Download PDFInfo
- Publication number
- CN207732414U CN207732414U CN201820149848.4U CN201820149848U CN207732414U CN 207732414 U CN207732414 U CN 207732414U CN 201820149848 U CN201820149848 U CN 201820149848U CN 207732414 U CN207732414 U CN 207732414U
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- circuit
- short
- led
- pmos
- diode
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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]
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Abstract
The utility model discloses a kind of short-circuit protection circuits of the boosting LED drivings for solar controller, including LED driving major loop switches, ON-OFF control circuit and output short-circuit detection circuit, LED driving major loop switches are PMOS and are controlled by ON-OFF control circuit, output short-circuit detection circuit measures output voltage in real time by diode, when output short-circuit occurs, the anode voltage trigger switch control circuit of the diode turns off PMOS, main circuit power supply stops, LED is driven into protected mode, after short-circuit condition is cancelled, the anode voltage of the diode restores, PMOS is connected again, LED driving normal works.It solves the problems, such as booster circuit output short circuit protection, greatly improves the operation precision of such product short-circuit protection and the reliability of product, reduce crash rate of the product in installation and use.
Description
Technical field
The utility model is related to controller technology fields, more particularly, to a kind of boosting LED for solar controller
The short-circuit protection circuit of driving.
Background technology
Boosting output solar streetlight controller on the market mostly uses liter to make output voltage be higher than cell voltage
Volt circuit (boost circuits), still, due to the design feature of booster circuit, output short circuit protection is always asking for this kind of circuit
Topic point.Or booster type solar controller on the market is that do not have output short circuit protection function, cause to control when installing and using
Device failure processed.Have plenty of using self-recovery fuse as output short circuit protection, the protection precision of this kind of period is not high, often has
Protective effect may not be had, or action is too sensitive to lead to false triggering, to influence to work normally.
Utility model content
The utility model in view of the deficiencies of the prior art, provide it is a kind of for solar controller boosting LED driving
The problem of short-circuit protection circuit, which solve booster circuit output short circuit protections.
The utility model is so that above-mentioned technical problem is addressed by the following technical programs.
The short-circuit protection circuit of boosting LED drivings for solar controller, it is characterized in that：It is led back including LED drivings
Way switch, ON-OFF control circuit and output short-circuit detection circuit, it is PMOS and by switching control electricity that LED, which drives major loop switch,
Road controls, and output short-circuit detection circuit measures output voltage in real time by diode, when output short-circuit occurs, the diode
Anode voltage trigger switch control circuit turn off PMOS, main circuit power supply stops, and LED is driven into protected mode, works as short circuit
After state is cancelled, the anode voltage of the diode restores, and PMOS is connected again, LED driving normal works.
The beneficial effects of the utility model：Compared with booster type solar lamp controller conventional on the market, the present invention is very
Good solves the problems, such as booster circuit output short circuit protection, greatly improves the operation precision of such product short-circuit protection,
And the reliability of product, reduce crash rate of the product in installation and use.
Description of the drawings
It is intended to, convenient for description preferred embodiment, not constitute the limit to scope of protection of the utility model in conjunction with the following drawings
System.
Fig. 1 is the electrical block diagram of the utility model embodiment.
Specific implementation mode
In order to facilitate the utility model is understood, below in conjunction with the accompanying drawings in the preferred embodiment pair of the utility model that provides
The utility model is described in detail.
The short-circuit protection circuit of the boosting LED drivings for solar controller of the utility model embodiment, including LED
Major loop switch, ON-OFF control circuit and output short-circuit detection circuit are driven, it is PMOS and by opening that LED, which drives major loop switch,
Control circuit control is closed, output short-circuit detection circuit measures output voltage in real time by diode, when output short-circuit occurs, institute
The anode voltage trigger switch control circuit shutdown PMOS of diode is stated, main circuit power supply stops, and LED is driven into protection mould
Formula, after short-circuit condition is cancelled, the anode voltage of the diode restores, and PMOS is connected again, LED driving normal works.
As shown in Figure 1, when MCU draws high LIGHT_EN signals (5V), the BE voltages of Q7 are in ON-OFF control circuit at this time
0.7V, PMOSQ4 are connected.The normal output of LED drivings.The detecting element D7 of output short-circuit detection circuit to measure output electricity in real time
Pressure.The cathode voltage of D7 at this time>10V, anode voltage (LIGHT_EN) level are 5V.PMOS constant conductions.
When output short-circuit occurs, the cathode of D7 is pulled low as 0V, and anode (LIGHT_EN) signal of D7 is clamped to
0.7V.At this time Q7 ends, and PMOS Q4 cut-offs, main circuit power supply stops, and LED is driven into protected mode.When short-circuit condition takes
After disappearing, LIGHT_EN signals are restored to 5V, and PMOS is connected again at this time, LED driving normal works.
Several technical terms used in the utility model are intended merely to facilitate description, do not constitute to the utility model
Limitation, the utility model is not limited to above-described preferable embodiment, is based on those skilled in the art institute
The known technology or use that can be known are capable of the various modifications of equivalence replacement and the embodiment of change in the prior art,
Every spirit or technical concept based on the utility model, should be included within the scope of protection of this utility model.
Claims (1)
1. the short-circuit protection circuit of the boosting LED drivings for solar controller, it is characterized in that：Major loop is driven including LED
Switch, ON-OFF control circuit and output short-circuit detection circuit, LED driving major loop switches are PMOS and pass through ON-OFF control circuit
Control, output short-circuit detection circuit measures output voltage in real time by diode, when output short-circuit occurs, the diode
Anode voltage trigger switch control circuit turns off PMOS, and main circuit power supply stops, and LED is driven into protected mode, when short-circuit shape
After state is cancelled, the anode voltage of the diode restores, and PMOS is connected again, LED driving normal works.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820149848.4U CN207732414U (en) | 2018-01-30 | 2018-01-30 | The short-circuit protection circuit of boosting LED drivings for solar controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820149848.4U CN207732414U (en) | 2018-01-30 | 2018-01-30 | The short-circuit protection circuit of boosting LED drivings for solar controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207732414U true CN207732414U (en) | 2018-08-14 |
Family
ID=63080976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820149848.4U Active CN207732414U (en) | 2018-01-30 | 2018-01-30 | The short-circuit protection circuit of boosting LED drivings for solar controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207732414U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020108509A1 (en) * | 2018-11-27 | 2020-06-04 | Foshan Ichikoh Valeo Auto Lighting Systems Co., Ltd. | Protection circuit, circuit and operation method therefor, and corresponding vehicle light and vehicle |
-
2018
- 2018-01-30 CN CN201820149848.4U patent/CN207732414U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020108509A1 (en) * | 2018-11-27 | 2020-06-04 | Foshan Ichikoh Valeo Auto Lighting Systems Co., Ltd. | Protection circuit, circuit and operation method therefor, and corresponding vehicle light and vehicle |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |