发明申请
- 专利标题: Motor Drive Circuit and Illumination Apparatus
- 专利标题(中): 电动机驱动电路和照明装置
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申请号: US13070348申请日: 2011-03-23
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公开(公告)号: US20120068605A1公开(公告)日: 2012-03-22
- 发明人: Tetsuya Yoshitomi , Masashi Tanabe , Syunji Suzuki
- 申请人: Tetsuya Yoshitomi , Masashi Tanabe , Syunji Suzuki
- 申请人地址: BM Hamilton
- 专利权人: ON Semiconductor Trading, Ltd.
- 当前专利权人: ON Semiconductor Trading, Ltd.
- 当前专利权人地址: BM Hamilton
- 优先权: JP2010-068644 20100324
- 主分类号: H01J7/24
- IPC分类号: H01J7/24 ; H02P7/29 ; H02P6/22
摘要:
A motor-drive circuit includes: an output transistor configured to supply a drive current to a motor for a cooling fan; a switching-control circuit configured to control switching of the output transistor so that the motor rotates in a first direction, or rotates in a second direction opposite to the first direction; and a switching circuit configured to, when a first time has elapsed since start of rotation of the motor in the first direction, cause the switching-control circuit to start switching control so that the motor stops rotating in the first direction and thereafter rotates in the second direction, and configured to, when a second time has elapsed since start of rotation of the motor in the second direction, cause the switching-control circuit to start switching control so that the motor stops rotating in the second direction and thereafter rotates in the first direction.
公开/授权文献
- US08736214B2 Motor drive circuit and illumination apparatus 公开/授权日:2014-05-27