TB6575FNG Datasheet, PDF (1/13 Pages) Toshiba Semiconductor – PWM Sensorless Controller for 3-Phase Full-Wave BLDC Motors

Preliminary ^{TOSHIBA CMOS Integrated Circuit Silicon Monolithic}
TB6575FNG
PWM Sensorless Controller for 3-Phase Full-Wave BLDC Motors
TB6575FNG
The TB6575FNG provides sensorless commutation and PWM
current control for 3-phase full-wave BLDC motors. It controls
rotation speed by changing a PWM duty cycle by analog voltage.
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
Weight: 0.14 g (typ.)
• 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.
• Forced commutation frequency can be selected. (fXT/(6 × 2¹⁶), fXT/(6 × 2¹⁷), fXT/(6 × 2¹⁸) )
• Output polarity switching (P-channel + N-channel, N-channel + N-channel)
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2004/03/15