Notification 681 – Device on time may exceed maximum

CATEGORY

ISSUE / RESULT

FIX / REFERENCE(S)

Warning

The worst case calculated device conduction time exceeds the maximum limit. This could result in poor output regulation at maximum load.

The device conduction time can be reduced by increasing the operating frequency or decreasing the duty cycle.  Selecting a smaller VOR would result in a smaller turn ratio and a smaller duty cycle.