Patent ID: 7095217

Claim:
A method comprising: determining a first plurality of output current levels over a first range of output voltage levels for a variable output DC power source, each one of said first plurality of output current levels equal to a maximum output power level of said variable output DC power source divided by an output voltage level of said variable output DC power source over said first range; establishing a second plurality of output current levels over said first range of output voltage levels in response to said first plurality of output current levels, said second plurality of output current levels decreasing with increasing voltage levels over said first range; monitoring an output current of said variable output DC power source; and driving said output current towards one of said second plurality of output current levels if an output voltage of said variable output DC power source is within said first range and if said output current at said output voltage is greater than or equal to said one of said second plurality of output current levels associated with said output voltage.