Patent ID: 7839660

Claim:
A power converter, comprising: an energy transfer element coupled between an input of the power converter and an output of the power converter; a power converter controller coupled to the energy transfer element to control a transfer of energy from the input of the power converter to the output of the power converter, wherein a load is to be coupled to the output of the power converter; a current source to be coupled to the load, wherein the current source regulates the current flowing through the load to a threshold current value, wherein the current source is coupled to sense a current through the load, and; a switch having a first and second end, wherein the first end is to be coupled to the load and the second end is coupled to the current source, wherein the switch is coupled to be switched on and off at a duty cycle to control an average current through the load, wherein the current through the load is substantially equal to a current through the switch and the current source.