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:
Oct. 20, 2020

Filed:

Sep. 27, 2019
Applicant:

Apple Inc., Cupertino, CA (US);

Inventors:

Sujan K. Manohar, Austin, TX (US);

Nathan F. Hanagami, San Francisco, CA (US);

Assignee:

Apple Inc., Cupertino, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 5/00 (2006.01); H03K 19/0185 (2006.01); H03K 17/687 (2006.01); H03K 19/017 (2006.01);
U.S. Cl.
CPC ...
H03K 19/018514 (2013.01); H03K 17/6871 (2013.01); H03K 19/01714 (2013.01); H03K 2217/0081 (2013.01);
Abstract

A level shifter circuit included in a computer system may include bootstrap and feedback nodes. The level shifter circuit may discharge the feedback node in response to high-going transition on a received input signal generated using a first power supply signal. The level shifter circuit may also increase a voltage level of the bootstrap node in response to the high-going transition and charge the bootstrap node, in response to the discharge of the feedback node, to a voltage level of a second power supply signal that is different than a voltage level of the first power supply signal. The level shifter circuit may generate an output signal using the voltage levels of the feedback node and the second power supply signal.


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