Patent ID: 8274179

Claim:
An apparatus comprising: a differential voltage doubler configured to receive a differential input voltage that includes a first input voltage and that further includes a second input voltage and further configured to generate a differential output voltage that includes a first output voltage and that further includes a second output voltage, the differential output voltage double the differential input voltage, the differential voltage doubler comprising a constituent voltage doubler, the constituent voltage doubler comprising: a first capacitor having a first terminal and a second terminal, the first terminal configured to be coupled to the first input voltage during a charging phase of the constituent voltage doubler and the second terminal configured to be coupled to the second input voltage during the charging phase of the constituent voltage doubler, the first terminal further configured to be coupled to the first output voltage during an output phase of the constituent voltage doubler and the second terminal further configured to be coupled to a common-mode voltage during the output phase of the constituent voltage doubler, the output phase non-overlapping in time with the charging phase; and a second capacitor having a third terminal and a fourth terminal, the third terminal configured to be coupled to the first input voltage during the charging phase and the fourth terminal configured to be coupled to the second input voltage during the charging phase, the third terminal further configured to be coupled to the common-mode voltage during the output phase and the fourth terminal further configured to be coupled to the second output voltage during the output phase.