HID (High Intensity Discharge) ballast based on UC2843 chip

A ballast and chip technology, applied in the field of circuits, can solve the problems that the working efficiency of MOSFET tubes and the electromagnetic compatibility can not meet the requirements of the working environment of automobiles, etc.

Inactive Publication Date: 2012-09-19
SHANGHAI SEEYAO ELECTRONICS CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0002] The current-mode PWM control circuit based on the UC2843 chip included in the existing ballast, the PWM pulse output by it is responsible for regulating the voltage conversion of the flyback DC-DC of the ballast, such as figure 1 As shown, in this circuit, there is a peak in the drain voltage waveform of the MOSFET tube, such as figure 2 As shown, the working efficiency and electromagnetic compatibility (EMC) performance of the MOSFET tube cannot meet the requirements of the automotive working environment. Therefore, the circuit needs to be improved

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  • HID (High Intensity Discharge) ballast based on UC2843 chip
  • HID (High Intensity Discharge) ballast based on UC2843 chip
  • HID (High Intensity Discharge) ballast based on UC2843 chip

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[0011] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0012] see image 3 . It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. The disclosed technical content must be within the scope covered. At the same time, term...

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Abstract

The invention provides an HID (High Intensity Discharge) ballast based on a UC2843 chip. the HID ballast comprises the UC2843 chip, an oscillating circuit, a switching tube driving circuit, a switching tube and a no-voltage detection circuit, wherein the oscillating circuit and the switching tube driving circuit are connected with the UC2843 chip, the switching tube is connected with an output end of the switching tube driving circuit, and the no-voltage detection circuit is connected with the switching tube and the oscillating circuit. The HID ballast based on the UC2843 chip, provided by the invention, has the advantages that the no-voltage switching of the switching tube can be realized, and the like.

Description

technical field [0001] The invention relates to the field of circuits, in particular to a HID ballast based on UC2843 chip. Background technique [0002] The current-mode PWM control circuit based on the UC2843 chip included in the existing ballast, the PWM pulse output by it is responsible for regulating the voltage conversion of the flyback DC-DC of the ballast, such as figure 1 As shown, in this circuit, there is a peak in the drain voltage waveform of the MOSFET tube, such as figure 2 As shown, the working efficiency and electromagnetic compatibility (EMC) performance of the MOSFET tube cannot meet the requirements of the working environment of the car. Therefore, the circuit needs to be improved. Contents of the invention [0003] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a HID ballast based on the UC2843 chip, so as to realize the zero-voltage switching of the switching tube. [0004] In order t...

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Application Information

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IPC IPC(8): H05B41/14H05B41/36
CPCY02B20/202Y02B20/00
Inventor蒋荡华王永和王艳周张宝安李国阳
OwnerSHANGHAI SEEYAO ELECTRONICS CO LTD