US 12,216,515 B2
Current measurement for power converter circuits
Shawn Searles, Austin, TX (US); Fabio Gozzini, San Jose, CA (US); Sanjay Pant, Santa Clara, CA (US); and Inder M. Sodhi, Palo Alto, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Oct. 30, 2023, as Appl. No. 18/497,443.
Application 18/497,443 is a continuation of application No. 17/211,527, filed on Mar. 24, 2021, granted, now 11,803,219.
Prior Publication US 2024/0126353 A1, Apr. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 1/26 (2006.01); G01R 15/14 (2006.01); G01R 19/25 (2006.01); G05F 1/46 (2006.01); G11C 7/10 (2006.01)
CPC G06F 1/26 (2013.01) [G01R 15/146 (2013.01); G11C 7/1096 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a power converter configured to generate a regulated supply voltage, wherein the power converter includes a first phase circuit configured to generate a first demand current, wherein the first phase circuit includes:
a current sampling circuit configured to generate a stream of digital samples of the first demand current;
a first memory circuit configured to store a plurality of data words, wherein a given one of the plurality of data words comprises a plurality of digital samples; and
a trigger circuit configured to generate a trigger signal in response to detecting a trigger event in the stream of digital samples; and
a sample circuit coupled to the first phase circuit, wherein the sample circuit includes:
a control circuit configured to generate a timestamp value in response to generation of the trigger signal and further configured to generate an address indicative of a location in the first memory circuit storing a particular one of the plurality of digital samples corresponding to the trigger event.