Patent ID: 8593832

Claim:
A power converter, comprising: an energy transfer element; a current controller coupled to the energy transfer element and coupled to an input of the power converter, wherein the current controller is coupled to selectively enable one of a first current, second current or third current in the current controller, wherein the first current is substantially zero, the second current is greater than the third current, and the third current is greater than the first current, wherein the third current is controlled to only partially discharge a capacitance coupled to a terminal coupled between the energy transfer element and the current controller; a control circuit to be coupled to the current controller to selectively enable said one of the first current, second current or third current in the current controller; a first feedback circuit coupled to the control circuit and coupled to generate a first feedback signal representative of an output of the power converter while the first current is enabled by the current controller after a full discharge pulse of current in the current controller; and a second feedback circuit coupled to the control circuit and coupled to generate a second feedback signal representative of the output of the power converter while the first current is enabled in the controller after a partial discharge pulse of current in the current controller.