SYNCHRONOUS RECTIFIER PHASE CONTROL TO IMPROVE LOAD EFFICIENCY

摘要

A semiconductor device includes a current monitor circuit to measure a load current. A controller controls drive signals having a signal phase to operate a synchronous rectifier (SR) circuit based on the measured load current from the current monitor circuit. The controller applies a first control phase sequence to control the signal phase to the SR circuit if the measured load current is above a predetermined current threshold. The controller applies a second control phase sequence to control the signal phase to the SR circuit if the measured load current is equal or below the predetermined current threshold.