Patent ID: 9621135
Date: 2017-04-11
CPC Classifications: H03K

Claim:
1. A voltage level shifter comprising: a voltage converting unit operable to convert an input voltage into a current; a voltage level shifting unit operable to couple to the voltage converting unit and drive a driving voltage that is based on the current from the voltage converting unit, and further operable to couple to a modulated floating ground and shift a voltage level of the driving voltage when a modulation voltage is applied at a first voltage level to the modulated floating ground; a circuit driving voltage supply unit operable to supply a circuit driving voltage and further operable to generate a shifted voltage level of the circuit driving voltage when the modulation voltage is applied at the first voltage level to the circuit driving voltage supply unit; and an output unit operable to couple to the voltage level shifting unit and the circuit driving voltage supply unit and supply an output voltage based on the circuit driving voltage and the driving voltage, and further operable to supply the output voltage at a second voltage level based on the shifted voltage level of the driving voltage and the shifted voltage level of the circuit driving voltage when the modulation voltage is applied at the first voltage level.