Patent ID: 7999487

Claim:
An electronic circuit, comprising: a current controlled circuit having a current sense output node at which a current sense signal is provided representative of a current flowing through the current controlled circuit, a voltage sense output node at which a voltage sense signal is provided representative of a voltage at the voltage sense output node, and a control node configured to receive a control signal to control the current flowing through the current controlled circuit; and a current/voltage control circuit having a current sense input node, a voltage sense input node, and an output node, wherein the current sense input node of the current/voltage control circuit is coupled to the current sense output node of the current controlled circuit, wherein the voltage sense input node of the current/voltage control circuit is coupled to the voltage sense output node of the current controlled circuit, wherein the output node of the current/voltage control circuit is coupled to the control node of the current controlled circuit, and wherein the current/voltage control circuit is configured to provide the control signal at the output node of the current/voltage control circuit resulting in a predetermined voltage at the voltage sense output node of the current controlled circuit and resulting in a predetermined average current passing through the current controlled circuit, the predetermined average current resulting by way of a feedback loop comprising the coupling between the current sense input node of the current/voltage control circuit and the current sense output node of the current controlled circuit.