CHATTERING PREVENTING CIRCUIT, WAVEFORM SHAPING CIRCUIT PROVIDED WITH CHATTERING PREVENTING CIRCUIT AND THREE-PHASE MOTOR DRIVE CONTROL CIRCUIT PROVIDED WITH WAVEFORM SHAPING CIRCUIT

摘要

A chattering preventing circuit provides an FG signal having no noise due to chattering without using a hysteresis comparator. A waveform shaping circuit and a motor drive control circuit provided with the chattering preventing circuit or the waveform shaping circuit are also provided.