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:
Dec. 07, 2021
Filed:
Dec. 16, 2020
Stmicroelectronics Asia Pacific Pte Ltd, Singapore, SG;
Teerasak Lee, Singapore, SG;
STMicroelectronics Asia Pacific Pte Ltd, Singapore, SG;
Abstract
A bridge rectifier is formed by a first transistor coupled between a regulator output and a first tap, a second transistor coupled between the regulator output and a second tap, a third transistor coupled between the first tap and ground, and a fourth transistor coupled between the second tap and ground. A first comparator circuit, when enabled, compares ground to a voltage at the first tap and asserts a first low-side control signal to turn on the third transistor when the voltage at the first tap is below ground, and, when reset, samples an offset of the first comparator circuit. A second comparator circuit, when enabled, compares ground to a voltage at second first tap and asserts a second low-side control signal to turn on the fourth transistor when the voltage at the second tap is below ground, and, when reset, samples an offset of the second comparator circuit.