tb6548f TOSHIBA Semiconductor CORPORATION, tb6548f Datasheet - Page 8

• Manufacturer Part Number: tb6548f
• Description: Three-phase Full-wave Pwm Sensorless Controller For Brushless Dc Motors
• Manufacturer: TOSHIBA Semiconductor CORPORATION

8. Start/Stop Control
Timing chart
frequency 4 times higher than the resonator frequency or even higher is input continuously.
PWM signal
Detection
timing
Start
PWM signal
Detection
timing
Stop
Start/Stop is controlled using PWM signal input pin.
A stop is acknowledged when PWM signal duty is 0, and a start is acknowledged when ON-signal of a
512 periods at the resonator frequency
512 periods at the resonator frequency
Note: Take sufficient care for noise on PWM signal input pin.
First detection
8
First detection
Second detection
Start
Second detection
and stop
2001-08-28
TB6548F