Invention Grant
US09052344B2 Current detection circuit, motor driving device, magnetic disk storage device, and electronic appliance
有权
电流检测电路，电机驱动装置，磁盘存储装置和电子设备
- Patent Title: Current detection circuit, motor driving device, magnetic disk storage device, and electronic appliance
- Patent Title (中): 电流检测电路，电机驱动装置，磁盘存储装置和电子设备
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Application No.: US14264558Application Date: 2014-04-29
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Publication No.: US09052344B2Publication Date: 2015-06-09
- Inventor: Takashi Yoshiya
- Applicant: Rohm Co., Ltd.
- Applicant Address: JP Kyoto
- Assignee: Rohm Co., Ltd.
- Current Assignee: Rohm Co., Ltd.
- Current Assignee Address: JP Kyoto
- Agency: Fish & Richardson P.C.
- Priority: JP2013-095095 20130430
- Main IPC: G11B19/20
- IPC: G11B19/20 ; G01R19/30 ; H02P3/14 ; G11B19/28
Abstract:
A current detection circuit for detecting a maximum current value in a three-phase motor includes an identifier configured to identify a maximum current phase having the maximum current value among phases of the motor, and a detector configured to detects the maximum current value by summing current values of phases other than the maximum current phase when the current direction in the maximum current phase is a predetermined first direction.
Public/Granted literature
- US20140321001A1 CURRENT DETECTION CIRCUIT, MOTOR DRIVING DEVICE, MAGNETIC DISK STORAGE DEVICE, AND ELECTRONIC APPLIANCE Public/Granted day:2014-10-30
Information query
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