US 12,334,801 B2
Supply generator / supply modulator with switched-capacitor drive supply
John R. Hoversten, Arlington, MA (US); David J. Perreault, Cambridge, MA (US); Yevgeniy A. Tkachenko, Belmont, MA (US); Aaron Cook, Deerfield, NH (US); and Kapil Kesarwani, Bedford, NH (US)
Assigned to Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed on Aug. 19, 2022, as Appl. No. 17/820,978.
Claims priority of provisional application 63/235,389, filed on Aug. 20, 2021.
Prior Publication US 2023/0057037 A1, Feb. 23, 2023
Int. Cl. H02M 3/07 (2006.01); H02M 1/00 (2006.01); H02M 3/158 (2006.01)
CPC H02M 1/0006 (2021.05) [H02M 1/0095 (2021.05); H02M 3/07 (2013.01); H02M 3/158 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A circuit configured to receive a first voltage generated by a supply generator and a second voltage generated by the supply generator and generate an output voltage that is greater than both the first voltage and the second voltage, the circuit comprising:
a first capacitor configured to charge to a voltage equal to a difference between the first voltage and the output voltage;
a second capacitor configured to charge to a voltage equal to a difference between the first voltage and the second voltage; and
a plurality of conductive paths coupled to the first capacitor and the second capacitor and having two states, wherein in a first state, the plurality of conductive paths are configured to cause the second capacitor to charge to the voltage equal to the difference between the first voltage and the second voltage, and wherein in a second state, the plurality of conductive paths are configured to cause the second capacitor to be connected in parallel with the first capacitor to cause the first capacitor to charge to the voltage equal to the difference between the first voltage and the output voltage,
wherein the output voltage is provided to driver circuitry configured to power a gate of a transistor, wherein the first voltage and the second voltage are each too small to power the gate of the transistor.