SYSTEMS AND METHODS FOR ZERO VOLTAGE SWITCHING IN POWER CONVERSION SYSTEMS

摘要

System and method for regulating a power converter. A system for regulating a power converter includes a controller, a first switch, and a second switch. The controller is configured to generate a first switching signal and a second switching signal. The first switch is configured to receive the first switching signal, the first switch being coupled to an auxiliary winding of the power converter further including a primary winding and a secondary winding. The second switch is configured to receive the second switching signal and coupled to the primary winding of the power converter. The controller is further configured to, change, at a first time, the second switching signal to open the second switch, maintain, from the first time to a second time, the first switching signal to keep the first switch open, and change, at the second time, the first switching signal to close the first switch.

主权项

1. A system for regulating a power converter, the system comprising:
a controller configured to generate a first switching signal and a second switching signal; a first switch configured to receive the first switching signal, the first switch being coupled to an auxiliary winding of the power converter further including a primary winding and a secondary winding; and a second switch configured to receive the second switching signal and coupled to the primary winding of the power converter; wherein the controller is further configured to:
change, at a first time, the second switching signal to open the second switch;maintain, from the first time to a second time, the first switching signal to keep the first switch open; andchange, at the second time, the first switching signal to close the first switch; wherein the controller is further configured to:
change, at a third time, the first switching signal to open the first switch;maintain, from the third time to a fourth time, the second switching signal to keep the second switch open; andchange, at the fourth time, the second switching signal to close the second switch.