Patent ID: 7622903

Claim:
A system comprising: a control circuit having a first terminal, a second terminal, and a control terminal, wherein the first terminal is configured to couple to an input terminal of a semiconductor device and the second terminal is configured to couple to an output terminal of the semiconductor device, wherein the control circuit is operable to generate a constant voltage component at the control terminal, thereby developing a first device-current in the semiconductor device; a first resistance having a specified value and configured to couple between the first terminal and the control terminal; and a second resistance having the specified value and configured to couple between the second terminal and ground; wherein the control circuit is operable to maintain a first control voltage at the control terminal, wherein the first control voltage is equivalent to a sum of the constant voltage component plus a first device-voltage developed across the input terminal and the output terminal of the semiconductor device in response to the first device-current; and wherein in accordance with the maintained first control voltage, the first device-current is determined by the constant voltage component, the first resistance, and the second resistance.