US 12,231,044 B2
Power converter circuit for use with multiple low-current power rails
Victor Zyuban, Sunnyvale, CA (US); Jay B. Fletcher, Saratoga, CA (US); and Hao Zhou, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Jan. 11, 2023, as Appl. No. 18/153,057.
Prior Publication US 2024/0235391 A1, Jul. 11, 2024
Int. Cl. H02M 3/158 (2006.01)
CPC H02M 3/158 (2013.01) 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a power converter circuit configured to generate a plurality of voltage levels on a converter node during a plurality of time periods;
a plurality of voltage regulator circuits coupled to the converter node and configured to generate respective voltage levels on a plurality of local power supply nodes using a voltage level of the converter node; and
a plurality of switch devices coupled between the converter node and corresponding local power supply nodes of the plurality of local power supply nodes, wherein a given switch device of the plurality of switch devices is configured to bypass a given voltage regulator circuit of the plurality of voltage regulator circuits during a given time period of the plurality of time periods.