The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 07, 2023

Filed:

Aug. 02, 2022
Applicant:

Apple Inc., Cupertino, CA (US);

Inventors:

Stephen C. Sherbrook, San Jose, CA (US);

Alvin K. Ng, San Jose, CA (US);

Anthony Da Costa, Los Altos, CA (US);

Assignee:

APPLE INC., Cupertino, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/40 (2020.01); G01R 19/00 (2006.01);
U.S. Cl.
CPC ...
G01R 31/40 (2013.01); G01R 19/0092 (2013.01);
Abstract

A system includes a first connection configured to allow current flow between a first node and a second node through a first transistor when it is enabled, and a first diode configured to allow current flow between the first node and the second node when the first transistor is disabled. A second connection is configured to allow current flow between the first node and the second node through a second transistor when it is enabled, and a second diode configured to allow current flow between the first node and the second node when the second transistor is disabled. A fault detection circuit is configured to test the first connection by detection of current flow on the second connection with the second transistor disabled, and is configured to test the second connection by detection of current flow on the first connection with the first transistor disabled.


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