Invention Grant
- Patent Title: Battery charging system including current observer circuitry to avoid battery voltage overshoot based on battery current draw
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Application No.: US15053750Application Date: 2016-02-25
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Publication No.: US09882408B2Publication Date: 2018-01-30
- Inventor: Rendon Holloway , Qinghung (Michelle) Lee , Jonathan Klein
- Applicant: Fairchild Semiconductor Corporation
- Applicant Address: US CA San Jose
- Assignee: Fairchild Semiconductor Corporation
- Current Assignee: Fairchild Semiconductor Corporation
- Current Assignee Address: US CA San Jose
- Agency: Okamoto & Benedicto LLP
- Main IPC: H02J7/00
- IPC: H02J7/00 ; H02J7/04 ; H02J7/24 ; H02J7/08

Abstract:
According to one aspect of the present disclosure, there is provided a battery charging system. The battery charging system includes battery charging circuitry configured to provide charging current to a battery. The battery charging system further includes feedback circuitry configured to generate a feedback signal indicative of a battery charging condition, wherein the battery charging system is configured to control the battery charging current based on, at least in part, the feedback signal. The battery charging system further includes feed forward circuitry configured to adjust the feedback signal to decrease battery charging current when a decrease in battery current draw exceeds a threshold, and wherein the feed forward circuitry is configured to decrease the battery charging current faster than the feedback circuitry.
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