Off-line converter with digital control

Details Off-line converter with digital control Off-line converter with digital control

2011-07-05

2011-07-05

Han, Jessica (Department: 2838)

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

C323S284000

Reexamination Certificate

active

07974112

ABSTRACT:
A regulation circuit for use in DC to DC converter is disclosed. One such regulation circuit includes a feedback circuit to be coupled an energy transfer element output to receive a feedback signal to indicate whether the energy transfer element output is above or below a threshold level. A control circuit is included that is to be coupled to a switch that is coupled to an energy transfer element input. The control circuit is further coupled to the feedback circuit to generate a drive signal to control the switch to regulate the energy transfer element output to approximately the threshold level. The control circuit is to maintain an on-time of a current cycle of the drive signal and not allow an on-time of a next cycle of the drive signal in response to the energy transfer element output rising above the threshold level.

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