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. 25, 2024
Filed:
Sep. 17, 2021
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Frank Warnes, Milton Keynes, GB;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
A reverse polarity protection circuit of a DC-DC converter includes an inductive component. When the DC-DC converter is connected to a power supply with correct polarity, the inductive component of the converter receives power via a body diode of a protection switch. Once the inductive component begins to charge and discharge under control of a driving switch, the protection switch turns on and allows full power to be provided to the inductive component. When the DC-DC converter is connected with reverse polarity, a clamping switch fed by the power supply turns on and connects a control input of the protection switch to ground, turning off the protection switch. The clamping switch is protected by a switch protection device to lower the voltage difference between a control input of the clamping switch and an input of the clamping switch.