Sensorless PWM Driver for 3 Phase Brushless Motors

Features

Sensorless dri ve in three phase full wave

PWM chopper control

Contr ol based on the PWM duty cycle input or analog voltage

input is selectable

Output current : Absolute maximum rating: 3 A

Power supply : Absolute maximum rating: 25 V

Adjustable output PMW duty cycle

Selectable l ead angle control function

Selectable o verlappi ng commutation ( 120°, 135°, and

Selectable soft switching

Rotation speed detecting signal (FG_

Lock detecting signal L D _OUT

TB67B001

B : Normal state: High , Abnormal state: Low

Adjustable startup settings

Selectable f orced commutation frequency control function

Selectable PWM frequency

Restart function

Overcurrent protection circuit (

Thermal shutdown circuit (

Under voltage lockout circuit UVLO

Current limiter circuit