Patent ID: 8629706

Claim:
A power switch comprising: a control circuit having a first controlled ground terminal and a second controlled ground terminal; a first switching circuit coupled between a first output terminal and the first controlled ground terminal and configured to be turned on or turned off in response to a voltage level of the first controlled ground terminal; a second switching circuit coupled between a second output terminal and the second controlled ground terminal and configured to be turned on or turned off in response to a voltage level of the second controlled ground terminal; and a cross-coupled amplifier having a power node configured to be set at a first voltage level, a first input/output node coupled to the first switching circuit, and a second input/output node coupled to the second switching circuit, wherein the control circuit is configured to: connect the second controlled ground terminal to a ground during a first period that a voltage level at the first output terminal is switched from the ground to the first voltage level; set the second controlled ground terminal at an elevated ground level during a second period that the voltage level at the first output terminal remains at the first voltage level, the elevated ground level being between the ground and the first voltage level; and set the first controlled ground terminal at a second voltage level during the first period and the second period, the second voltage level being greater than the ground.