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. 05, 2020
Filed:
Oct. 19, 2018
Applicant:
Socionext Inc., Kanagawa, JP;
Inventor:
Masahisa Iida, Kanagawa, JP;
Assignee:
SOCIONEXT INC., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 3/00 (2006.01); H03K 17/16 (2006.01); H03K 17/687 (2006.01); H03K 19/00 (2006.01); H03K 3/356 (2006.01); H03K 17/693 (2006.01); H03K 17/00 (2006.01); H03K 19/0185 (2006.01);
U.S. Cl.
CPC ...
H03K 17/162 (2013.01); H03K 3/356113 (2013.01); H03K 17/005 (2013.01); H03K 17/6872 (2013.01); H03K 17/693 (2013.01); H03K 19/00 (2013.01); H03K 19/018521 (2013.01); H03K 2217/0018 (2013.01);
Abstract
In order to provide a power supply switch circuit using only low-breakdown voltage transistors and eliminate the need for a special through-current preventing circuit, the switch control circuits output a signal ranging from a ground voltage level to a second power supply voltage level when a first power supply voltage (0 V/3.3 V) is in off-state and a second power supply voltage (0 V/1.8 V) is in on-state, and a signal ranging from the second power supply voltage level to a first power supply voltage level when the first and second power supply voltages are in on-state, thereby allowing a PMOS transistor and an NMOS transistor to turn on or off.