A method of regulating voltage at an output of a switching power converter includes sensing an output voltage feedback signal; comparing the sensed feedback signal to a reference at a determined time during a cycling of the switch; and regulating the output voltage by either enabling or inhibiting cycling...http://www.google.es/patents/US6900995?utm_source=gb-gplus-sharePatente US6900995 - PWM power converter controlled by transistion detection of a comparator error signal
PWM power converter controlled by transistion detection of a comparator ...
