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.
Patent No.:
Date of Patent:
May. 03, 2016
Filed:
May. 17, 2015
Applicant:
Freescale Semiconductor, Inc., Austin, TX (US);
Inventors:
Mayank Jain, Haryana, IN;
Anil Kumar Gottapu, Andhra Pradesh, IN;
Assignee:
FREESCALE SEMICONDUCTOR, INC., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 5/00 (2006.01); H03K 3/356 (2006.01); H03K 19/0185 (2006.01); H03K 3/012 (2006.01);
U.S. Cl.
CPC ...
H03K 3/356104 (2013.01); H03K 3/012 (2013.01); H03K 3/356113 (2013.01); H03K 19/018521 (2013.01);
Abstract
A flying cap, level shifter has a capacitor with an upper plate connected to (i) a hybrid power supply (VDDH-VDDL) by an n-type transistor and (ii) a relatively high-voltage power supply VDDH by a p-type transistor. Both of the transistors are controlled by a voltage at the level shifter's output node, which is driven to either VDDH or ground. As such, one of the two transistors will always be on, such that the flying capacitor will be continuously recharged to a voltage difference that ensures that the level shifter will operate properly.