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:
Jul. 16, 2019
Filed:
Aug. 29, 2016
Autonetworks Technologies, Ltd., Yokkaichi, Mie, JP;
Sumitomo Wiring Systems, Ltd., Yokkaichi, Mie, JP;
Sumitomo Electric Industries, Ltd., Osaka-shi, Osaka, JP;
Takashi Igarashi, Mie, JP;
Byeongsu Jeong, Mie, JP;
Kazuki Masuda, Mie, JP;
Seiji Takahashi, Mie, JP;
Takanori Itou, Mie, JP;
AutoNetworks Technologies, Ltd., Yokkaichi, Mie, JP;
Sumitomo Wiring Systems, Ltd., Yokkaichi, Mie, JP;
Sumitomo Electric Industries, Ltd., Osaka-Shi, Osaka, JP;
Abstract
A DC-DC converter includes a protection function for handling a reverse connection state, and a protection function for handling a predetermined abnormality other than a reverse connection state, while reducing conduction loss. The DC-DC converter includes a first protection circuit unit, and a switching element on a first conductive path of a high-voltage side switches to an OFF state upon a predetermined abnormal state being detected to prevent a current from flowing into a voltage conversion unit. Furthermore, a reverse connection protection circuit unit and a switching element, on a third conductive path between the voltage conversion unit and a reference conductive path, is configured to switch to an off state if at least a low-voltage side power supply unit is in a reverse connection state, preventing a current from the reference conductive path. Thus, a current is prevented from flowing toward a power supply that is improperly connected.