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Actuation circuit for a switch in a switch-mode converter for improving the response to sudden changes

  • US 7,312,597 B2
  • Filed: 07/28/2005
  • Issued: 12/25/2007
  • Est. Priority Date: 07/28/2004
  • Status: Active Grant
First Claim
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1. An actuation circuit for a switch that controls the power consumption in a switch-mode converter, the switch-mode converter having input terminals for applying an input voltage and output terminals for providing an output voltage, the actuation circuit comprising:

  • an error signal generation circuit configured to generate an error signal based on a reference signal and a voltage measurement signal, the voltage measurement signal dependent on the output voltage,a filter arrangement including a first filter having an integrating response and configured to generate a first filter signal from the error signal and a second filter configured to generate a second filter signal from the error signal in accordance with a hysteresis characteristic, the filter arrangement configured to generate a first control signal based on the first filter signal and the second filter signal,an actuation signal generation circuit configured to generate a switch actuation signal based at least in part on the first control signal, the actuation signal generation circuit adapted to provide the switch actuation signal to the switch.

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