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:
Sep. 04, 2018
Filed:
Sep. 30, 2015
Hitachi Power Semiconductor Device, Ltd., Hitachi-shi, Ibaraki, JP;
Tetsuya Ishimaru, Tokyo, JP;
Kohhei Onda, Tokyo, JP;
Shinichi Kurita, Ibaraki, JP;
Shigeru Sugayama, Ibaraki, JP;
Hitachi Power Semiconductor Device, Ltd., Hitachi-shi, JP;
Abstract
A rectifier () includes a rectifying MOSFET () that performs synchronous rectification, a control circuit () that inputs a voltage across a pair of a positive-side main terminal TK and a negative-side main terminal TA of the rectifying MOSFET () to determine an ON or OFF state of the rectifying MOSFET () based on the inputted voltage, and a capacitor () that supplies power to the control circuit (). The control circuit () includes a blocking circuit () that inputs the voltage across the pair of main terminals of the rectifying MOSFET (), to block power supply to the control circuit () when the inputted voltage across the pair of main terminals is higher than or equal to a first voltage, and to unblock power supply to the control circuit () when the inputted voltage across the pair of main terminals is lower than the first voltage.