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High-voltage drive circuit

A high-voltage driving circuit and circuit technology, applied in logic circuits, electrical components, pulse technology, etc., can solve problems such as low reliability

Active Publication Date: 2020-02-07
HUNAN GOKE MICROELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a high-voltage drive circuit for the problem of low reliability of the traditional high-voltage drive circuit

Method used

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Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described more comprehensively through the following embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] In one embodiment, see figure 1 , providing a high-voltage drive circuit, the circuit includes a level switching circuit 100, a level boosting circuit 200, a first switching tube 300 and a second switching tube 400, and the input end of the level switching circuit 100 is used to access Input signal, the output end of the level switching circuit 100 is connected to the input end of the level raising circuit 200, the output end of the level raising circuit 200 is connected to the control end of the first switch tube 300, and the input end of the first switch tube 300 For ac...

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Abstract

The invention relates to a high-voltage driving circuit. The high-voltage driving circuit comprises a level interchange circuit, a level boosting circuit, a first switch tube and a second switch tube;the level interchange circuit performs level interchange after accessing an input signal; an output signal is transmitted to the level boosting circuit and the control end of the second switch tube;the level boosting circuit boosts the amplitude of the accessed level and outputs the boosted level to the first switch tube; the first switch tube is turned off when receiving a high-level signal with the amplitude equal to that of the accessed voltage, and is turned on when receiving a low-level signal; therefore, the voltage needing to be borne by the first switching tube during conduction workis smaller than the accessed voltage; the second switch tube is turned on when receiving the low-level signal; and when the ground level signal is received, the second switch tube is turned off, so that the voltage needing to be borne by the second switch tube during conduction work is smaller than the high level voltage, the first switch tube and the second switch tube do not bear high voltage,the service life is prolonged, a high-voltage-resistant device is not adopted, and the use cost is reduced.

Description

technical field [0001] The present application relates to the technical field of electronic circuit design, in particular to a high-voltage drive circuit. Background technique [0002] The high-voltage drive circuit is generally used between the main circuit and the control circuit to amplify the signal of the control circuit so that it can drive the power transistor to meet the rated power of the load so that the load can work normally. [0003] In a traditional high-voltage drive circuit, the output stage generally uses a high-voltage tube to realize the conversion and drive from low voltage to high voltage. Take the transmission drive (TX) of USB2's full-speed mode (FS) as an example. The input signal VIN is in the low-voltage domain. It is output to the high-voltage domain through the level conversion circuit and then transmitted to the high-voltage tube. The high-voltage tube is turned on in the high-voltage domain. The level conversion circuit needs to use high-voltag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K19/0944
CPCH03K19/0944
Inventor 陈婷杨艺山胡眺李孝敬
Owner HUNAN GOKE MICROELECTRONICS
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