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High-power LED control circuit

A control circuit and high-power technology, which is applied in the use of electrical components and semiconductor lamps, etc., can solve the problems of core shortage, cost reduction, failure to guarantee normal delivery time and project development nodes, etc., and achieve the effect of cheap price and cost reduction

Pending Publication Date: 2022-03-25
SUZHOU YAOTENG PHOTOELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Recently, due to various reasons, the delivery date of chips suitable for automobiles is relatively tight, resulting in a shortage of chips in many mass-produced projects or new projects to be developed, which cannot guarantee normal delivery dates and project development nodes; on the other hand, with the automotive market With the continuous development in China, the configuration is becoming more and more abundant, and the price of new cars is getting cheaper and cheaper. This requires that the cost of accessories should be gradually reduced without reducing functions and regulations.

Method used

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Embodiment Construction

[0074] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0075] Such as Figure 1 to Figure 8 As shown, a high-power LED control circuit includes a power supply circuit 1, an LDO circuit 2, a triangular wave generating circuit 3, a chopping circuit 4, a voltage feedback circuit 5, a self-locking protection circuit 6, an overcurrent monitoring circuit 7, and a driving circuit 8 , the VIN terminal of the power supply circuit 1, the VIN terminal of the LDO circuit 2, and the VIN terminal of the drive circuit 8 are connected together, the VCC terminal of the LDO circuit 2 and the VCC terminal of the triangular wave generating circuit 3, the VCC terminal of the chopper circuit 4, and the self-locking protection The VCC end of the circuit 6 and the VCC end of the drive circuit 8 are connected in common, the T-wave end of the triangular wave generating circuit 3 is connected in common with the T-...

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Abstract

The invention relates to a high-power LED control circuit, which comprises a power supply circuit, an LDO circuit, a triangular wave generation circuit, a chopper circuit, a voltage feedback circuit, a self-locking protection circuit, an overcurrent monitoring circuit and a driving circuit, and has the beneficial effects that the control circuit adopts conventional electronic components with sufficient capacity, the price is low, and the cost can be reduced; electronic components such as a field-effect tube and a Schottky diode which are high in heat productivity do not need to be sealed in a chip, the size of the electronic components is not limited by chip packaging, the power of the electronic components can be selected freely according to requirements, and the power requirement can be met while the cost is controlled; power, under-voltage protection, soft start and PWM frequency can be flexibly adjusted according to requirements.

Description

technical field [0001] The invention relates to the field of LED control circuits, in particular to a high-power LED control circuit. Background technique [0002] Recently, due to various reasons, the delivery date of chips suitable for automobiles is relatively tight, resulting in a shortage of chips in many mass-produced projects or new projects to be developed, which cannot guarantee normal delivery dates and project development nodes; on the other hand, with the automotive market With the continuous development in the country, the configuration is becoming more and more abundant, but the price of new cars is getting cheaper and cheaper. This requires that the cost of accessories should be gradually reduced without reducing functions and regulations. Contents of the invention [0003] The purpose of the present invention is to overcome the above problems in the prior art and provide a high-power LED control circuit. [0004] In order to achieve the above-mentioned tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B45/50H05B45/34H05B45/345H05B47/24H05B47/25
CPCH05B45/50H05B45/34H05B45/345H05B47/24H05B47/25Y02B20/30
Inventor 傅森赵雷
Owner SUZHOU YAOTENG PHOTOELECTRIC
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