Patent ID: 9628080
Date: 2017-04-18
CPC Classifications: G06F,H03K

Claim:
1. A circuit comprising: a first power domain signal of a first power domain, the first power domain signal having a first supply voltage which can vary between a reference value and a first desired value greater than the reference value; a second power domain signal having a second supply voltage which can vary between the reference value and a second desired value, the second desired value being between the first desired value and the reference value; and a voltage generating circuit comprising: wherein the first supply voltage node is configured to have a voltage level between the reference value and the first supply voltage value, and is coupled with the first switching device; the reference node is configured to have a voltage level of the reference value, and is coupled with the second switching device; the sub voltage generating circuit is coupled in between the first switching device and the second switching device; and the first switching device and the second switching device are configured to receive a control signal which can vary between the reference value and the first desired value,