US 11,699,949 B2
Power management system switched capacitor voltage regulator with integrated passive device
Sanjay Dabral, Cupertino, CA (US); David A. Secker, San Jose, CA (US); Jun Zhai, Cupertino, CA (US); Ralf M. Schmitt, San Jose, CA (US); Vidhya Ramachandran, Cupertino, CA (US); and Wenjie Mao, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Jul. 23, 2021, as Appl. No. 17/383,983.
Application 17/383,983 is a continuation of application No. 16/943,139, filed on Jul. 30, 2020, granted, now 11,101,732.
Application 16/943,139 is a continuation of application No. 16/231,904, filed on Dec. 24, 2018, granted, now 10,756,622, issued on Aug. 5, 2020.
Prior Publication US 2022/0014095 A1, Jan. 13, 2022
Int. Cl. H02M 3/07 (2006.01); G05F 3/10 (2006.01); H01L 29/66 (2006.01); H01L 23/00 (2006.01); H01L 23/522 (2006.01)
CPC H02M 3/07 (2013.01) [G05F 3/10 (2013.01); H01L 23/5223 (2013.01); H01L 23/5227 (2013.01); H01L 24/17 (2013.01); H01L 29/66181 (2013.01); H01L 2224/02379 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A power management system comprising:
a voltage source;
a first switched capacitor voltage regulator (SCVR) coupled to the voltage source;
a second SCVR coupled to the voltage source;
a plurality of circuit loads; and
a control circuit configured to:
read performance states, weighted energy use, and binned voltage information for the plurality of circuit loads;
determine a corresponding operating voltage for each circuit load of the plurality of circuit loads;
assign a highest priority to a highest energy usage circuit load with a highest energy usage of the plurality of circuit loads;
select a first SCVR conversion ratio mode of the first SCVR and an SCVR voltage input value from the voltage source for the circuit load with the highest energy usage; and
select a second SCVR conversion ratio mode of the second SCVR for a next highest energy usage circuit load at the SCVR voltage input value;
wherein the first SCVR is coupled to the circuit load with the highest energy usage to receive an input voltage from the voltage source corresponding to the SCVR voltage input value and supply a first output voltage to the circuit load with the highest energy usage; and
wherein the second SCVR is coupled to the next highest energy usage circuit load to receive the input voltage corresponding to the SCVR voltage input value and supply a second output voltage to the next highest energy usage circuit load.