CONTROLLER FOR A POWER CONVERTER AND METHOD OF OPERATING THE SAME

摘要

A control system for a power converter with reduced power dissipation and method of operating the same. In one embodiment, the control system includes a first controller coupled to a primary winding of a transformer and configured to control a duty cycle of a power switch to regulate an output characteristic of the power converter. The control system also includes a second controller configured to provide a signal to one of a secondary winding of the transformer and a circuit element spanning an isolation boundary of the transformer in response to a dynamic change of the output characteristic to trigger the first controller to initiate the duty cycle for the power switch.

主权项

1. A control system for a power converter, comprising:
a first controller coupled to a primary winding of a transformer and configured to control a duty cycle of a power switch to regulate an output characteristic of said power converter; and a second controller configured to provide a signal to one of a secondary winding of said transformer and a circuit element spanning an isolation boundary of said transformer in response to a dynamic change of said output characteristic to trigger said first controller to initiate said duty cycle for said power switch.