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:
Jun. 12, 2018
Filed:
Mar. 22, 2017
Rohm Co., Ltd., Ukyo-ku, Kyoto-shi, JP;
Junichi Hagino, Kyoto, JP;
Hiroki Kikuchi, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
An insulated synchronous rectification DC/DC converter is provided. A feedback circuit drives a light-emitting element of a first photocoupler such that the output voltage Vof the DC/DC converter approaches a target voltage. A primary side controller is coupled to a light-receiving element of the first photocoupler, so as to switch on and off a switching transistor according to a feedback signal V. A synchronous rectification controller controls a synchronous rectification transistor. Upon detecting the occurrence of a switching-incapable state in the synchronous rectification transistor, a protection circuit instructs the primary side controller to stop the switching operation of the switching transistor.