	US 11,962,245 B2
	Digital current mode control for multi-phase voltage regulator circuits
Sanjay Pant, Santa Clara, CA (US); Fabio Gozzini, San Jose, CA (US); Hubert Attah, Santa Clara, CA (US); Jonathan F. Bolus, San Francisco, CA (US); and Wenxun Huang, Redwood City, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Feb. 13, 2023, as Appl. No. 18/168,276.
Application 18/168,276 is a continuation of application No. 17/661,693, filed on May 2, 2022, granted, now 11,581,813.
Application 17/661,693 is a continuation of application No. 17/201,712, filed on Mar. 15, 2021, granted, now 11,323,033, issued on May 3, 2022.
Application 17/201,712 is a continuation of application No. 16/877,260, filed on May 18, 2020, granted, now 10,951,118, issued on Mar. 16, 2021.
Application 16/877,260 is a continuation of application No. 16/387,316, filed on Apr. 17, 2019, granted, now 10,658,931, issued on May 19, 2020.
Prior Publication US 2023/0188043 A1, Jun. 15, 2023
Int. Cl. H02M 3/157 (2006.01); G06F 1/3203 (2019.01); H02M 3/158 (2006.01); H03M 1/12 (2006.01)

CPC H02M 3/1584 (2013.01) [G06F 1/3203 (2013.01); H02M 3/157 (2013.01); H03M 1/12 (2013.01); H02M 3/1586 (2021.05)]

19 Claims

1. An apparatus, comprising:

a plurality of phase circuits coupled to a regulated power supply line via a corresponding plurality of inductors and configured to modify a voltage level of the regulated power supply line using respective ones of a plurality of control signals;

an analog-to-digital converter circuit configured to generate a plurality of data bits based on a voltage level of the regulated power supply line; and

a control circuit configured to:

perform a comparison of the voltage level of the regulated power supply line to a threshold value;

generate a plurality of digital control words using a result of the comparison and the plurality of data bits; and

convert the plurality of digital control words to respective analog values to generate the plurality of control signals.