Invention Grant
- Patent Title: Motor drive circuit
- Patent Title (中): 电机驱动电路
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Application No.: US13215652Application Date: 2011-08-23
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Publication No.: US08482232B2Publication Date: 2013-07-09
- Inventor: Toshiyuki Imai
- Applicant: Toshiyuki Imai
- Applicant Address: BM Hamilton
- Assignee: ON Semiconductor Trading, Ltd.
- Current Assignee: ON Semiconductor Trading, Ltd.
- Current Assignee Address: BM Hamilton
- Agency: Osha Liang LLP
- Priority: JP2010-188599 20100825
- Main IPC: H03K5/00
- IPC: H03K5/00 ; H02P6/14 ; H02P1/26 ; H02P27/04 ; H02P7/00 ; H02P23/00
Abstract:
A motor drive circuit configured to supply drive currents to drive coils with a plurality of phases of a motor to drive the motor, includes: a trapezoidal wave signal generation circuit configured to output a trapezoidal wave signal whose inclination is changed with a rotation speed of the motor or a target rotation speed of the motor; and a plurality of output transistors configured to output the drive current to the drive coils, respectively, in accordance with the trapezoidal wave signal.
Public/Granted literature
- US20120049775A1 MOTOR DRIVE CIRCUIT Public/Granted day:2012-03-01
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