Invention Grant
- Patent Title: Charge/discharge control circuit and battery device including the same
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Application No.: US15689520Application Date: 2017-08-29
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Publication No.: US10686323B2Publication Date: 2020-06-16
- Inventor: Atsushi Sakurai , Takashi Ono
- Applicant: SII Semiconductor Corporation
- Applicant Address: JP Chiba
- Assignee: ABLIC INC.
- Current Assignee: ABLIC INC.
- Current Assignee Address: JP Chiba
- Agency: Brinks Gilson & Lione
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@46b8547e com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@30356f00
- Main IPC: H02J7/00
- IPC: H02J7/00 ; H02J7/34

Abstract:
Provided are a charge/discharge control circuit capable of using an FET having a low withstand voltage. The charge/discharge control circuit is configured to control charging and discharging of a secondary cell, and includes: a positive power supply terminal and a negative power supply terminal for monitoring a voltage of the secondary cell; a charge control terminal configured to connect to a gate of a charge control FET, the charge control FET having one end connected to an external negative terminal to which a negative electrode of a load or a charger is connected; and a clamp circuit configured to clamp a signal at a high level for turning on the charge control FET to a voltage that is higher than a reference voltage by a predetermined voltage, the reference voltage being a voltage at the external negative terminal, the signal being output to the charge control terminal.
Public/Granted literature
- US20180062410A1 CHARGE/DISCHARGE CONTROL CIRCUIT AND BATTERY DEVICE INCLUDING THE SAME Public/Granted day:2018-03-01
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