Apparatus and method for improving stability and dynamic response of semi-bridge convertor

Apparatus and method for improving stability and dynamic response of semi-bridge convertor

  • CN 1,405,963 B
  • Filed: 05/13/2002
  • Issued: 05/05/2010
  • Est. Priority Date: 09/20/2001
  • Status: Active Grant
First Claim
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1. a realization is from the voltage transitions of the DC-to-DC power supply changeover device with the output voltage that produces expectation and regulate, and it comprises:

  • Be used to receive the input of power supply;

    At least one is connected to described input to produce the switch of the variable current that becomes with the duty cycle;

    Be used to change described variable current to produce the transformer of switching current;

    An input capacitor is connected in series to the elementary winding of described transformer;

    Be used for described switching current rectification to produce the rectification circuit of rectified current;

    The filter that is used for the described rectified current of level and smooth output;

    Be used to produce the feedback network of the error signal of deviation between described output end voltage of reflection and the expectation reference;

    Controller, be used to receive described error signal, read described input capacitor both end voltage and respond a ramp signal, produce a drive signal to be connected to described at least one switch, operate described switch according to the described duty cycle, thereby described power supply changeover device carries out work as the closed loop feedback system.

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