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A high voltage drive circuit

A high-voltage driving circuit and voltage stabilizing circuit technology, applied in the direction of electric light sources, electrical components, electroluminescent light sources, etc., can solve the problems of uneven component quality, lower circuit reliability, and prone to failure, so as to reduce circuit failure rate, reduce the number, and prolong the service life

Active Publication Date: 2017-11-14
江苏万邦微电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, LED light tubes also need to be equipped with a driving circuit. Due to the complex structure of the existing LED driving circuit, there are many design components, and the quality of these components is uneven, which is prone to failure and reduces the reliability of the long-term operation of the circuit.

Method used

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Embodiment Construction

[0012] like Figure 1-2 As shown, the present invention includes a low-voltage DC power supply, a boost conversion circuit, a bridge rectifier circuit and a voltage stabilizing circuit that are electrically connected in sequence; the input end of the low-voltage DC power supply is connected to an external AC mains, and the output end is connected to a boost conversion circuit. circuit; the boost conversion circuit includes a boost converter chip, an input capacitor Cin, a filter capacitor Cout, an inductor L1, a diode, a voltage dividing resistor R1, a voltage dividing resistor R2 and a load resistor R; the boost converter chip The vin pins are respectively connected to the positive pole of the input capacitor Cin and one end of the inductor L1, and the other end of the inductor L1 is respectively connected to the sw pin of the boost converter chip and the positive pole of the diode, and the negative pole of the diode is respectively connected to one end of the voltage dividing...

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Abstract

The invention discloses a high-voltage driving circuit, which comprises a low-voltage DC power supply, a boost conversion circuit, a rectifier circuit and a voltage stabilizing circuit electrically connected in sequence; Voltage conversion circuit; the input end of the boost conversion circuit is connected to the output end of the voltage stabilizing circuit, and the output end is connected to the input end of the rectification circuit; the output end of the rectification circuit is connected to the input end of the voltage stabilizing circuit, and the output of the voltage stabilizing circuit The terminal is connected to the LED light group to be driven. The invention has the advantages of simple circuit, wide application range and high reliability.

Description

technical field [0001] The invention belongs to a high-voltage driving circuit. Background technique [0002] LED is called the fourth-generation lighting source or green light source. It has the characteristics of energy saving, environmental protection, long life, and small size. It is widely used in various indications, displays, decorations, backlights, general lighting, and urban night scenes. According to different functions, it can be divided into five categories: information display, signal lights, vehicle lamps, LCD backlight, and general lighting. [0003] However, LED tubes also need to be equipped with a driving circuit. Due to the complex structure of the existing LED driving circuit, there are many design components, and the quality of these components is uneven, which is prone to failure and reduces the reliability of the long-term operation of the circuit. Therefore, even if the LED lamp itself can achieve a life span of 50,000 to 100,000 hours or even longe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/37
Inventor 窦延军张林张春秋
Owner 江苏万邦微电子有限公司