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Isolated control bipolar high frequency high voltage pulse power supply circuit

A high-frequency, high-voltage, pulse power supply technology, applied in control/regulation systems, electrical components, and regulation of electrical variables, can solve problems such as low conversion efficiency and reliability, difficulty in miniaturization design, and large production volume, and achieve long-term work Good reliability, easy to small and modular design, output fast response effect

Active Publication Date: 2015-11-04
东文高压电源(天津)股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet the requirements of relevant indicators, this type of pulse power supply is often produced with a large volume, high cost, low conversion efficiency and reliability, and is not easy to miniaturize the design

Method used

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  • Isolated control bipolar high frequency high voltage pulse power supply circuit
  • Isolated control bipolar high frequency high voltage pulse power supply circuit

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Embodiment Construction

[0011] like figure 1 , 2 As shown, the isolation control bipolar high-frequency high-voltage pulse power supply circuit includes isolation high-voltage and floating auxiliary power supply circuit, square wave generation and pulse isolation control circuit, and output pulse switch circuit. Suspended auxiliary power supply circuit, square wave generation and pulse isolation control circuit are connected.

[0012]In the above isolated high voltage and floating auxiliary power supply circuit, the trigger terminal 2 of the control chip U1 and the threshold terminal 6 are connected and connected to one end of the resistor R2 and the capacitor C4 respectively, and the discharge terminal 7 of the control chip U1 is connected to one end of the resistor R1. , the other end of the resistor R2, the anode of the capacitor C3 is connected to the cathode of the diode D1, the cathode of the capacitor C3 is connected to the anode of the diode D1 and connected to the input ground GND, and the ...

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Abstract

The invention relates to an isolation-control bipolar high-frequency high-voltage pulse power supply circuit. An output pulse switching circuit is connected with an isolation high voltage and floating auxiliary power supply circuit and a square wave generation and pulse isolation control circuit, respectively; for the isolation high voltage and suspension auxiliary power supply part, a main control chip U1 is a 7555 time-base circuit; an astable multivibrator circuit formed by the main control chip U1 generates an isolation high voltage and a plurality of groups of floating auxiliary voltages through conversion. For the square wave generation and pulse isolation control part, in addition to the model 7555 control chip U5 adopts a 7555 time-base circuit, a control chip U4 adopts a TLP627-4 four-channel photoelectric coupler which is short in response time, high in current transmission ratio and high in isolation withstand voltage; as a result, the high-performance isolation control is ensured; finally, an output pulse switch is driven through a full bridge to obtain completely isolation bipolar high-frequency high-voltage pulse output. The completely isolation-control bipolar high-frequency high-voltage square-wave pulse output is realized; output pulses are wide in frequency range and good in waveform; and therefore, the pulse frequency can be regulated within a certain range.

Description

technical field [0001] The invention relates to an isolation control bipolar high-frequency high-voltage pulse power supply circuit used in optical fiber sensing, charging device, measuring instrument, environmental monitoring and other instruments and equipment in the fields of electronic industry and environmental protection. Background technique [0002] With the continuous development of science and technology, the application of high-frequency high-voltage pulse power supply has become more and more extensive. In addition to unipolar pulse output, the market has an increasing demand for bipolar pulse output, which not only requires fast response speed and high repetition frequency , and requires a higher output pulse amplitude, and the input and output are completely isolated. In order to meet the requirements of relevant indicators, such pulsed power supplies are often produced in large volume, high in cost, low in conversion efficiency and reliability, and difficult t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M9/02H02M3/335
Inventor 刘申李然周末梦
Owner 东文高压电源(天津)股份有限公司
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