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:
Apr. 01, 2025
Filed:
Jun. 20, 2022
Stmicroelectronics (China) Investment Co., Ltd., Shanghai, CN;
Stmicroelectronics S.r.i., Agrate Brianza, IT;
Ping Chen, Shanghai, CN;
Hui Yan, Shanghai, CN;
Vincenzo Randazzo, Biancavilla, IT;
Alberto Marzo, Giarre, IT;
Andrea Camillo Re, Valverde, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
STMicroelectronics (China) Investment Co., Ltd., Shanghai, CN;
Abstract
A circuit for reverse battery protection includes an isolation circuit and a control circuit. The isolation is circuit coupled between a gate output of an electronic fuse (E-fuse) and at least one external metal-oxide-semiconductor field-effect transistor (MOSFET). The E-fuse is coupled between a battery voltage pin and an external ground pin and further coupled to a microcontroller. The isolation circuit is configured to disconnect the gate output from the at least one external MOSFET when the battery is installed with reverse polarity. The control circuit is coupled between the external ground pin and the at least one external MOSFET. The control circuit is configured to turn on the at least one external MOSFET when the battery is installed with the reverse polarity.