发明申请
US20120268047A1 FAN MOTOR DRIVING DEVICE, AND COOLING DEVICE AND ELECTRONIC MACHINE USING THE SAME
审中-公开
风扇电机驱动装置，以及使用其的冷却装置和电子机
- 专利标题： FAN MOTOR DRIVING DEVICE, AND COOLING DEVICE AND ELECTRONIC MACHINE USING THE SAME
- 专利标题（中）： 风扇电机驱动装置，以及使用其的冷却装置和电子机
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申请号： US13434062申请日： 2012-03-29
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公开(公告)号： US20120268047A1公开(公告)日： 2012-10-25
- 发明人: TOSHIYA SUZUKI , NOBUO KOMURA , SHINSUKE SANO
- 申请人： TOSHIYA SUZUKI , NOBUO KOMURA , SHINSUKE SANO
- 申请人地址： JP KYOTO
- 专利权人： ROHM CO., LTD.
- 当前专利权人： ROHM CO., LTD.
- 当前专利权人地址： JP KYOTO
- 优先权： JP2011-082082 20110401
- 主分类号： H02P6/16
- IPC分类号： H02P6/16
摘要：
The objective of the present invention is to miniaturize a driving circuit of a fan motor. The present invention provides a driving device for driving a fan motor as a three-phase brushless DC motor. An inbuilt Hall component is disposed adjacent to the fan motor and generates a pair of Hall signals corresponding to a rotor position of the fan motor. An internal power source supplies a bias signal to the inbuilt Hall component. A Hall signal processing portion cancels a shift of the pair of Hall signals and amplifies the Hall signal. A driving processing circuit drives the fan motor according to an output signal of the Hall signal processing portion. The driving device is integrated on a semiconductor substrate.