Patent ID: 8514592

Claim:
A control circuit for a converter, the converter having a switch, the control circuit comprising: a voltage controlled current source (VCCS) having an output coupled to a current sense node, wherein the current sense node is configured to be coupled to a first terminal of the switch, and the VCCS is configured to provide a current based on an output of the converter in response to a determining that the converter is operating in a normal mode or a current based on an input of the converter in response to a determining that the converter is operating in a burst mode and a switch of the converter is in an on state, wherein the VCCS is further configured to alter a slew rate of a signal on the current sense node when a duty cycle of the converter is less than a first threshold; a current sense signal unit coupled to the current sense node, the current sense signal unit configured to compare a voltage potential at the current sense node with a second threshold; and a gate signal unit configured to be coupled to a control terminal of the switch and to the current sense signal unit, the gate signal unit configured to generate a control signal for the switch based on a result of an output of the current sense signal unit.