US 11,658,473 B2
Prevention and detection of overheating from component short circuits
Vishal Gupta, Sunnyvale, CA (US); Timothy M. Johnson, San Jose, CA (US); and Sivasankari Krishnanji, Santa Clara, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Jul. 21, 2021, as Appl. No. 17/381,839.
Application 17/381,839 is a continuation of application No. 16/201,454, filed on Nov. 27, 2018, granted, now 11,101,634.
Claims priority of provisional application 62/737,354, filed on Sep. 27, 2018.
Prior Publication US 2021/0359505 A1, Nov. 18, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H02H 3/08 (2006.01); H02H 1/00 (2006.01); H05K 5/00 (2006.01); H05K 1/14 (2006.01); H05K 1/18 (2006.01); H05K 1/02 (2006.01); G01R 19/165 (2006.01); G05B 19/042 (2006.01); G08B 21/18 (2006.01); H02H 3/10 (2006.01); G06F 1/16 (2006.01); G06F 1/18 (2006.01); H02H 3/04 (2006.01); H02H 5/04 (2006.01); H02H 7/20 (2006.01)
CPC H02H 3/085 (2013.01) [G01R 19/16542 (2013.01); G05B 19/0428 (2013.01); G08B 21/182 (2013.01); H02H 1/0007 (2013.01); H02H 3/10 (2013.01); H05K 1/028 (2013.01); H05K 1/14 (2013.01); H05K 1/181 (2013.01); H05K 5/0086 (2013.01); G05B 2219/21156 (2013.01); G06F 1/1613 (2013.01); G06F 1/189 (2013.01); H02H 1/0092 (2013.01); H02H 3/04 (2013.01); H02H 5/041 (2013.01); H02H 7/20 (2013.01); H02J 2207/20 (2020.01); H05K 2201/10151 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A personal electronic device comprising:
a main printed circuit board having disposed thereon a power management unit configured to control a power regulator that powers the personal electronic device;
one or more auxiliary circuits coupled to the main printed circuit board by one or more corresponding flexible printed circuits; and
one or more temperature sensors each disposed on one of the flexible printed circuits;
wherein the power management unit is configured to monitor the one or more temperature sensors, and to provide a warning in response to a monitored temperature or a rate of change of a monitored temperature exceeding a first threshold, the warning including one or more of visual, audible, or haptic feedback indicating an overtemperature warning to a user of the personal electronic device.