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Apparatus for improving stability and dynamic response of half-bridge converter

  • US 6,396,716 B1
  • Filed: 09/20/2001
  • Issued: 05/28/2002
  • Est. Priority Date: 09/20/2001
  • Status: Expired due to Term
First Claim
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1. A power converter for DC to DC voltage conversion to generate a desired regulated output voltage, the power converter comprising:

  • input terminals for receiving power;

    at least one switch coupled to the input terminals to generate a variable current in accordance with a duty cycle;

    a magnetic component suitable for transforming the variable current to generate a transformed current;

    an input capacitor coupled to magnetic component;

    a rectifying circuit for rectifying the transformed current to generate a rectified current;

    a filter for smoothing the rectified current at output terminals;

    a feedback network generating an error signal reflecting deviation of a voltage at the output terminals from a desired reference; and

    a controller receiving the error signal, sensing the voltage across the input capacitor and responsive to a ramp signal for generating driving signals to operate the at least one switch in accordance with the duty cycle whereby the power converter operates as a closed loop feedback system.

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