TOSHIBA CMOS Integrated Circuit   Silicon Monolithic TB6575FNG

PWM Sensorless Controller for 3-Phase Full-Wave BLDC Motors 

Features 

•  3-phase full-wave sensorless drive 

•  PWM chopper drive 

•  PWM duty cycle control by analog input 

•  20-mA current sink capability on PWM output pins 

•  Overcurrent protection 

•  Forward/reverse rotation 

•  Lead angle control (7.5° and 15°) 

•  Overlap commutation 

•  Rotation speed sensing signal 

•  DC excitation mode to improve startup characteristic 

•  DC excitation time and forced commutation time for startup operation can be changed. 

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