US 12,381,524 B2
Multi-voltage generation circuit
Nadim Khlat, Cugnaux (FR)
Assigned to Qorvo US, Inc., Greensboro, NC (US)
Filed by Qorvo US, Inc., Greensboro, NC (US)
Filed on Sep. 16, 2022, as Appl. No. 17/946,170.
Claims priority of provisional application 63/255,649, filed on Oct. 14, 2021.
Prior Publication US 2023/0118768 A1, Apr. 20, 2023
Int. Cl. H03F 1/30 (2006.01); H03F 3/24 (2006.01)
CPC H03F 3/245 (2013.01) [H03F 2200/129 (2013.01); H03F 2200/451 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A multi-voltage generation circuit comprising:
a plurality of voltage modulation circuits each comprising:
a respective one of a plurality of voltage amplifiers configured to generate a respective one of a plurality of modulated initial voltages based on a respective one of a plurality of modulated target voltages; and
a respective one of a plurality of offset capacitors configured to raise the respective one of the plurality of modulated initial voltages by a respective one of a plurality of offset voltages to thereby generate a respective one of a plurality of modulated voltages; and
a control circuit configured to:
determine a plurality of charge intervals and a plurality of discharge intervals in each of one or more operation periods; and
cause each of the plurality of offset capacitors to be:
charged to the respective one of the plurality of offset voltages during a respective one of the plurality of charge intervals; and
discharged to maintain the respective one of the plurality of modulated voltages during a respective one of the plurality of discharge intervals.