A circuit protects a power conversion system with a feedback control loop from a fault condition. The circuit has an oscillator having an input for generating a signal with a frequency and a timer connected to the oscillator input and to the feedback control loop. The timer disables the oscillator after...http://www.google.fr/patents/US6456475?utm_source=gb-gplus-shareBrevet US6456475 - Off-line converter with digital control
