Invention Grant
- Patent Title: Chattering preventing circuit, waveform shaping circuit including chattering preventing circuit, and three-phase motor drive control circuit including waveform shaping circuit
- Patent Title (中): 抖动防止电路，包括抖动防止电路的波形整形电路和包括波形整形电路的三相电机驱动控制电路
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Application No.: US11664073Application Date: 2005-10-06
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Publication No.: US07683562B2Publication Date: 2010-03-23
- Inventor: Takashi Fujimura
- Applicant: Takashi Fujimura
- Applicant Address: JP Kyoto
- Assignee: Rohm Co., Ltd.
- Current Assignee: Rohm Co., Ltd.
- Current Assignee Address: JP Kyoto
- Agency: Fish & Richardson P.C.
- Priority: JP2004-302311 20041015
- International Application: PCT/JP2005/018532 WO 20051006
- International Announcement: WO2006/041005 WO 20060420
- Main IPC: H02K29/08
- IPC: H02K29/08
Abstract:
An object of the present invention is to provide a chattering preventing circuit, a waveform shaping circuit, and a motor drive control circuit including the chattering preventing circuit or the waveform shaping circuit, to provide an FG signal free from noise caused by chattering, without using a hysteresis comparator.
Public/Granted literature
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