TOP PERFORMANCE LIMITATION AND PERFORMANCE LIMITATION PROTECTION FOR POWERED SERVICES

摘要

A method of cycle-by-cycle operation of a clocked power converter includes: converting an input voltage on the primary side to an output voltage on the secondary side by switching a transistor connected to the primary side from an on state to an off state during the current cycle, Detecting valleys in a voltage at the transistor in the off-state, determining the valley at which the transistor is to be switched from the off-state to the on-state in the next switching cycle, and determining a highest peak current limit for the primary side over which the transistor in the next switching cycle is switched from on-state to off-state. The highest peak current limit is determined as a function of the input voltage and the valley at which the transistor is to be switched from the off state to the on state in the next switching cycle. There are also disclosed forced valley switching techniques.