POWER SUPPLIES AND CONTROL METHODS FOR OPERATING IN QUADRATURE-RESONANCE-SIMILAR MODE

摘要

Control method and power controller suitable for a switched mode power supply with a power switch are provided. An ON time of the power switch is recorded. An estimated OFF time is provided based on the ON time. The estimated OFF time is in positive correlation with the ON time. The power switch is turned ON after the elapse of the estimated OFF time.