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:
Mar. 17, 2020
Filed:
Mar. 08, 2019
Rohm Co., Ltd., Kyoto, JP;
Junichi Hagino, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A rectifier IC includes, in a single package, a transistor chip in which a transistor is integrated, a controller chip that detects a drain voltage (VD) and a source voltage (VS) of the transistor so as to perform ON/OFF control of the transistor, and functions as secondary side rectifier means of an insulation type switching power supply. The controller chip turns on the transistor when VD is lower than VS and turns off the transistor when VD is higher than VS. The insulation type switching power supply includes a transformer supplied with an input voltage, a control unit that controls primary side current of the transformer according to a feedback signal, a rectifying and a smoothing unit that rectifies and smooths a secondary side voltage of the transformer so as to generate an output voltage, and an output feedback unit that generates the feedback signal according to the output voltage.