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AssigneePower Integrations, Inc.
InventorsDaniel C. Prescott, Roger Colbeck
Estimating the term…
A controller for use in a power converter includes a load sensing circuit coupled to output an error signal in response to a feedback signal representative of an output of the power converter. The error signal is representative of a load coupled to an output of the power converter. A burst mode control circuit is coupled to output a burst mode control signal in response to the error signal. An offset current generator circuit is coupled to output an offset current in response to the error signal. A drive circuit is coupled to control switching of a power switch to control a transfer of energy from an input of the power converter to the output of the power converter in response to the error signal, the burst mode control signal, the offset current, and a current sense signal representative of a current through the power switch.
A controller for use in a power converter, comprising:
The controller of claim 33 wherein the burst mode control circuit includes a burst mode comparator coupled to receive the error signal and a burst threshold, wherein the burst mode comparator is coupled to output the burst mode control signal in response to a comparison of the error signal and the burst threshold.
The controller of claim 33 wherein the drive circuit is coupled to output a drive signal to control the switching of the power switch, wherein the drive circuit is coupled to turn OFF the power switch in response to the error signal, the current sense signal and the offset current, and wherein the drive circuit is coupled to be disabled from switching the power switch in response to the burst mode control signal.
The controller of claim 33 wherein the drive circuit includes a latch coupled to output a drive signal to control the switching of the power switch, wherein the latch is coupled to be set in response to a clock signal, wherein the latch is coupled to be reset in response to the error signal, the current sense signal and the offset current, and wherein the latch is coupled to be disabled from being set in response to the burst mode control signal.
A power converter, comprising:
The power converter of claim 34 wherein the burst mode control circuit includes a burst mode comparator coupled to receive the error signal and a burst threshold, wherein the burst mode comparator is coupled to output the burst mode control signal in response to a comparison of the error signal and the burst threshold.
The power converter of claim 34 wherein the drive circuit is coupled to output the drive signal, wherein the drive circuit is coupled to turn OFF the power switch in response to the error signal, the current sense signal and the offset current, and wherein the drive circuit is coupled to be disabled from switching the power switch in response to the burst mode control signal.
The power converter of claim 34 wherein the drive circuit includes a latch coupled to output the drive signal, wherein the latch is coupled to be set in response to a clock signal, wherein the latch is coupled to be reset in response to the error signal, the current sense signal and the offset current, and wherein the latch is coupled to be disabled from being set in response to the burst mode control signal.
Dependencies are inferred from the claim text.