Patent ID: 9720434
Date: 2017-08-01
CPC Classifications: G05F,G06F,H03K,Y02D

Claim:
1. An electronic device comprising: circuitry configured to operate in a first voltage domain supplied with a first voltage level and a reference voltage level; a voltage regulator configured to generate the first voltage level from a second voltage level higher than the first voltage level; at least one power gate configured to selectively couple the circuitry to one of the first voltage level generated by the voltage regulator and the reference voltage level; and control circuitry configured to generate a gating control signal for controlling whether the at least one power gate couples the circuitry to, or isolates the circuitry from, said one of the first voltage level and the reference voltage level; wherein the control circuitry is configured to operate in a second voltage domain supplied with a third voltage level derived from the second voltage level, wherein the third voltage level is higher than the first voltage level; and the at least one power gate has a gate terminal configured to receive the gating control signal generated by the control circuitry in the second voltage domain.