TB6551FG/TB6556FG/TB6584FNG: Sine-Wave PWM Motor Drive Solutions
The TB6551FG, TB6556FG and TB6584FNG are three-phase brushless DC motor controllers that generate a full sine-wave PWM output.
These motor controllers, are specifically designed to reduce motor noise and vibration by controlling the motor drive current with a sine wave. With lead angle control and PWM control, they provide high efficiency and low power dissipation. The TB6556FG and TB6584FNG feature on-chip auto lead angle control.
Features
- A true sine-wave output provides a significant reduction in acoustic noise compared to the conventional 120° commutation.
- Integrated lead angle control between 0° and 58° in 32 separate steps. This permits a wide range of motor applications through a choice of a suitable output driver.
- The phase outputs can be configured as either active-high or active-low.
- The dead-time function prevents cross conduction.
- Overcurrent protection: Forces the output signals to the inactive state to protect the output drivers if they exceed the rated voltage (Vdc = 0.5 V typ.)
- Undervoltage protection and motor rotational direction detection
Circuit Diagram
