US 12,323,104 B2
Voltage control device
Wei-Che Tseng, Hsinchu (TW); and Chen-Yen Ho, Hsinchu (TW)
Assigned to MEDIATEK INC., Hsin-Chu (TW)
Filed by MEDIATEK Inc., Hsin-Chu (TW)
Filed on Apr. 12, 2022, as Appl. No. 17/718,453.
Claims priority of provisional application 63/178,631, filed on Apr. 23, 2021.
Prior Publication US 2022/0345088 A1, Oct. 27, 2022
Int. Cl. H03F 3/04 (2006.01); H03F 1/02 (2006.01); H03F 3/189 (2006.01); H03F 3/20 (2006.01)
CPC H03F 1/0227 (2013.01) [H03F 3/189 (2013.01); H03F 3/20 (2013.01); H03F 1/0211 (2013.01); H03F 2200/102 (2013.01); H03F 2200/297 (2013.01); H03F 2200/451 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A voltage control device for controlling supply voltages of a power amplifier (PA), the voltage control device comprising:
a first processing circuit, configured to provide a first supply voltage to at least one driving stage amplifier of the PA, the first processing circuit comprising:
a low dropout (LDO) DC-DC converter, a buck DC-DC converter, a boost DC-DC converter or a buck boost DC-DC converter
a second processing circuit, configured to provide a second supply voltage to an output stage amplifier of the PA;
wherein the first supply voltage is generated according to an average-power-tracking (APT) mechanism related to an average power level of a radio frequency (RF) signal transmitted by the PA.