US 11,909,317 B2
Efficient use of energy in a switching power converter
Eric J. King, Austin, TX (US); Ajit Sharma, Austin, TX (US); Lingli Zhang, Austin, TX (US); Christian Larsen, Austin, TX (US); and Graeme G. Mackay, Austin, TX (US)
Assigned to Cirrus Logic Inc., Austin, TX (US)
Filed by Cirrus Logic International Semiconductor Ltd., Edinburgh (GB)
Filed on Feb. 24, 2023, as Appl. No. 18/174,106.
Application 18/174,106 is a division of application No. 17/825,775, filed on May 26, 2022, abandoned.
Application 17/825,775 is a division of application No. 16/916,395, filed on Jun. 30, 2020, granted, now 11,387,732, issued on Jul. 12, 2022.
Claims priority of provisional application 62/899,415, filed on Sep. 12, 2019.
Prior Publication US 2023/0208303 A1, Jun. 29, 2023
Int. Cl. H02M 3/158 (2006.01); H02M 1/08 (2006.01); H02M 1/00 (2006.01); H03G 3/00 (2006.01); H03F 3/19 (2006.01)
CPC H02M 3/158 (2013.01) [H02M 1/008 (2021.05); H02M 1/08 (2013.01); H02M 3/1584 (2013.01); H03F 3/19 (2013.01); H03G 3/004 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A system comprising:
a power converter configured to generate a first supply voltage at a first supply output of the power supply, the power converter having a maximum allowable input power drawn from a power source;
an energy storage element coupled to an output of the power converter at a top plate of the energy storage element, wherein the energy storage element is configured to store excess energy; and
a second supply output configured to generate a second supply voltage lower than the first supply voltage, wherein:
the second supply voltage tracks an envelope of an output signal generated by an amplifier coupled to the power supply when the amplifier consumes power from the second supply output; and
the second supply voltage regulates a voltage at a bottom plate of the energy storage element when the amplifier consumes power from the first supply output.