Supply generator / supply modulator with switched-capacitor drive supply

A circuit configured to receive a first voltage and a second voltage and generate an output voltage that is larger than the first voltage and the second voltage, the circuit comprising:

• a first capacitor that is configured to charge to a voltage equal to a difference between the first voltage and the output voltage;
• and
• a second capacitor configured to charge to a voltage equal to a difference between the first voltage and the second voltage,
• wherein when the first capacitor and the second capacitor are connected in parallel, the first capacitor charges to the voltage equal to the difference between the first voltage and the output voltage.

A circuit configured to receive at least a first voltage and a second voltage and generate an output voltage, the circuit comprising:

• a switch network that includes a first pair of switches and a second pair of switches;
• a first capacitor configured to receive the first voltage and coupled to the switch network;
• and
• a second capacitor coupled to the switch network,
• wherein when the first pair of switches are open and the second pair of switches are closed, the second capacitor is configured to charge to a voltage equal to a difference between the first voltage and the second voltage, and wherein when the first pair of switches are closed and the second pair of switches are open, the second capacitor is connected in parallel with the first capacitor to generate the output voltage, and
• wherein the output voltage is greater than both the first voltage and the second voltage.