Patent ID: 9036369
Filing Date: 2015-05-19
Classification: H02M

Abstract:
1. An integrated circuit (IC) comprising: a first terminal for receiving a first signal; a second terminal for receiving a second signal; a first voltage clamp; a second voltage clamp; and clamp selection circuitry operable to couple the second voltage clamp to the first terminal and decouple the first voltage clamp from the first terminal in response to a voltage of the second signal being greater than a threshold voltage, wherein the clamp selection circuitry is further operable to couple the first voltage clamp to the first terminal and decouple the second voltage clamp from the first terminal in response to the voltage of the second signal not being greater than the threshold voltage, and wherein the first voltage clamp is configured to output the sinking current having a second value during the selection condition when a diode is coupled in series with a resistor between the first terminal and the second terminal, wherein a cathode of the diode is coupled to the second terminal when the diode is coupled in series with the resistor between the first terminal and the second terminal.