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Isolation driven switch amplifier

A switching amplifier and isolation drive technology, applied in the direction of improving the amplifier to reduce the influence of noise, etc., can solve the problems of high cost, easy signal interference, complex circuit structure, etc., to reduce production cost, simplify design, and enhance signal anti-interference ability. Effect

Inactive Publication Date: 2014-07-09
江苏晟楠电子科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an isolated driving switching amplifier, which solves the problems of complex circuit structure, high cost and easy interference of signals in the existing isolated driving switching amplifier

Method used

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  • Isolation driven switch amplifier
  • Isolation driven switch amplifier

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Embodiment Construction

[0015] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] like figure 1 As shown, an isolated driving switching amplifier includes an analog signal input circuit module 1 , a triangular wave generating circuit module 2 , a comparing circuit module 3 , an isolation circuit module 4 and a power driving circuit module 5 . Both the analog signal input circuit module 1 and the triangular wave generating circuit module 2 are connected to the comparison circuit module 3, the comparison circuit module 3 is connected to the isolation circuit module 4, and the isolation circuit module 4 is connected to the power drive circuit module 5; the analog signal input circuit module inputs the analog control signal In the comparison circuit module, at the same time, the triangular wave generation circuit module also inputs the triangular wave signal into the comparison circuit module, and then the comparison ci...

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Abstract

The invention discloses an isolation driven switch amplifier which comprises an analog signal input circuit module and a triangular wave generation circuit module. Both the analog signal input circuit module and the triangular wave generation circuit module are connected with a comparison circuit module which is connected with an isolating circuit module, and the isolating circuit module is connected with a power-driven circuit module. The isolation driven switch amplifier converts analog voltage signals to PWM (pulse-width modulation) signals in advance, and isolatedly outputs the PWM signals in the same phase to control the power-driven circuit. Design of an isolating circuit is simplified effectively, anti-jamming capability of the signals is enhanced, and production cost is lowered.

Description

[0001] Technical field [0002] The present invention is the field of switch amplifier technology, which involves a isolation driver switch device. Background technique [0003] In terms of the driver control of the switch amplifier, when the switch amplifier is working, the power tube's ditage and turnover process will cause voltage vibration, and the shock will interfere with the control signal through the ground wire.In order to avoid the emergence of interference, the power part of the control signal is required to be isolated from the power part of the switch amplifier. [0004] Generally, the implementation method of the isolation driver switch is: input analog voltage signal, generates the same analog voltage signal with the same amplitude as the input signal after complex isolation circuit, and then converts it to the PWM signal to control the work of the power drive circuit.This isolation driver generally uses isolation amplifiers or linear optocouplers to achieve isolat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/26
Inventor 叶楠吴国庆严东华孙文明
Owner 江苏晟楠电子科技股份有限公司