US 12,081,179 B2
Power management of power amplifier modules
Joel Richard King, Newbury Park, CA (US); and Shayan Farahvash, Kensington, CA (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Aug. 16, 2021, as Appl. No. 17/445,167.
Claims priority of provisional application 62/706,587, filed on Aug. 26, 2020.
Prior Publication US 2022/0069787 A1, Mar. 3, 2022
Int. Cl. H04B 1/38 (2015.01); H03F 1/02 (2006.01); H03F 1/38 (2006.01); H03F 1/56 (2006.01); H03F 3/19 (2006.01); H03F 3/195 (2006.01); H03F 3/24 (2006.01); H04B 1/40 (2015.01)
CPC H03F 3/245 (2013.01) [H03F 1/0233 (2013.01); H03F 1/0238 (2013.01); H03F 1/56 (2013.01); H03F 3/195 (2013.01); H04B 1/38 (2013.01); H04B 1/40 (2013.01); H03F 2200/102 (2013.01); H03F 2200/105 (2013.01); H03F 2200/387 (2013.01); H03F 2200/451 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A mobile device comprising:
a transceiver configured to generate a first radio frequency signal and a second radio frequency signal;
a front-end system including a first power amplifier module configured to amplify the first radio frequency signal, a second power amplifier module configured to amplify the second radio frequency signal, and a second generation power amplifier module configured to amplify a second generation cellular signal, the first power amplifier module and the second power amplifier module each configured to provide amplification in a mid band and a high band; and
a power management system including an envelope tracking power management unit configured to generate a first shared power amplifier supply voltage for the first power amplifier module and the second generation power amplifier module, and an average power tracking power management unit configured to generate a second shared power amplifier supply voltage for the second power amplifier module and the second generation power amplifier module, the second generation power amplifier module switchable between a first mode using the first shared power amplifier supply voltage and a second mode using the second shared power amplifier supply voltage, the second generation power amplifier module including an integrated switch that selects the first shared power amplifier supply voltage in the first mode and that selects the second shared power amplifier supply voltage in the second mode.