Invention Publication
- Patent Title: CURRENT DETECTION CIRCUIT
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Application No.: US18429141Application Date: 2024-01-31
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Publication No.: US20240258897A1Publication Date: 2024-08-01
- Inventor: Yu YONEZAWA , Masayoshi YAMAMOTO , Atsushi HASENUMA , Koji SHIGESAWA , Keishi NAKAMURA , Susumu TOYODA
- Applicant: National University Corporation Tokai National Higher Education and Research System , KOA CORPORATION
- Applicant Address: JP Nagoya-shi
- Assignee: National University Corporation Tokai National Higher Education and Research System,KOA CORPORATION
- Current Assignee: National University Corporation Tokai National Higher Education and Research System,KOA CORPORATION
- Current Assignee Address: JP Nagoyo-shi; JP Ina-shi
- Priority: JP 23012778 2023.01.31
- Main IPC: H02M1/00
- IPC: H02M1/00 ; H02M7/5387 ; H03F3/45

Abstract:
A current detection circuit, including: an output circuit to output a signal indicating a voltage drop between a pair of detection terminals; an amplifier circuit to amplify the signal from the output circuit; an AD conversion circuit to generate a digital signal by sampling, at a predetermined cycle, an amplified signal amplified by the amplifier circuit; a filter circuit configured to extract, from the amplified signal amplified by the amplifier circuit, a noise component having a frequency higher than a sampling frequency of the AD conversion circuit; a comparing unit to output a comparison signal indicating a noise detection timing at which an output signal of the filter circuit exceeds a predetermined reference value for detecting the noise component; and an arithmetic circuit to delay a timing at which the amplified signal is sampled by the AD conversion circuit for a predetermined time based on the comparison signal.
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