The Toshiba high-voltage PWM brushless DC motor driver integrates a controller, which supports sine-wave PWM drive and wide-angle commutation and a high-voltage driver in a single package. It is designed to change the speed of a brushless DC motor directly by using a speed control analog signal from a microcontroller.
Sine-wave PWM drive or wide-angle commutation drive is selectable IGBTs are arranged in three-phase bridge unit Built-in oscillator circuit (carrier frequency = fosc/252 (Hz)) Bootstrap circuitry: Built-in bootstrap diode Built-in overcurrent protection, thermal shutdown, undervoltage lockout, and motor-lock detection Internal voltage regulator circuit (VREG = 5 V (typ.), 30 mA (max), Vrefout = 5 V (typ.), 35 mA (max)) Operating power supply voltage range: VCC = 13.5 to 16.5 V Motor power supply operating voltage range: VBB = 50 to 450 V
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