Patent ID: 7339356

Claim:
An apparatus for effecting current limit control for a power converter device; said power converter device operating in response to a modulating signal during a plurality of successive switching cycles; the apparatus comprising: (a) an extant signal level sensing unit coupled with said power converter device; said extant signal level sensing unit sensing an extant signal during said extant switching cycle; (b) a signal level predicting unit coupled for receiving a reference signal; said signal level predicting unit establishing a predicted signal level for an extant switching cycle of said plurality of successive switching cycles; (c) a comparing unit coupled with said signal level sensing unit and said signal level predicting unit; said comparing unit presenting a first output signal when said extant signal and said predicted signal level have a first relationship; said comparing unit presenting a second output signal when said extant signal and said predicted signal level have a second relationship; and (d) a control unit coupled with said comparing unit and with said power converter device; said control unit permitting presentation of said modulating signal to said power converter device when said comparing unit presents one output signal of said first output signal and said second output signal; said control unit interrupting presentation of said modulating signal to said power converter device when said comparing unit presents another output signal of said first output signal and said second output signal than said one output signal.