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:
Aug. 13, 2019
Filed:
Jul. 18, 2017
Applicant:
Stmicroelectronics International N.v., Schiphol, NL;
Inventor:
Prashant Singh, Greater Noida, IN;
Assignee:
STMicroelectronics International N.V., Schiphol, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/22 (2006.01); G05F 1/56 (2006.01); G06F 1/30 (2006.01); G06F 1/24 (2006.01);
U.S. Cl.
CPC ...
H03K 17/223 (2013.01); G05F 1/56 (2013.01); G06F 1/24 (2013.01); G06F 1/30 (2013.01); G06F 1/305 (2013.01); H03K 17/22 (2013.01);
Abstract
A power supply voltage detector circuit monitors a ramping supply voltage and selectively enables a voltage divider for operation to divide the ramping supply voltage in response to the ramping supply voltage exceeding a first threshold. Additionally, a variable resistance of the voltage divider is changed in response to the ramping supply voltage exceeding a second threshold. A voltage output from the voltage divider is used to generate a bandgap voltage used as a reference voltage in comparison operations for controlling enabling of the voltage divider and selection of the variable resistance.