Toshiba Releases Three-Phase BLDC Pre-Driver IC Featuring Sensorless Sine-Wave Motor Control
March 03, 2022
Toshiba Electronics Europe GmbH launched a three-phase brushless DC (BLDC) motor control pre-driver IC for motors that require high rotational speeds, such as those used for:
- Server fans
- Suction motors for cordless and robotic vacuum cleaners
Toshiba’s TC78B011FTG incorporates a sine-wave drive method decreasing vibration and noise. Its sensorless design saves the space constraints and cost of having a Hall sensor.
According to Toshiba, the built-in closed loop speed control regulates and maintains the motor’s rotational speed during dynamic power supply fluctuations and load variations without requiring an external microcontroller (MCU). Precise setting of a speed profile can be programmed into the built-in non-volatile memory (NVM).
Operating with a supply voltage ranging from 5.5 to 27V, the TC78B011FTG includes selectable closed loop or open loop speed control with speed being controlled through a PWM signal, analog voltage, or via the I²C interface. The I2C interface is simultaneously used to control various settings within the device. Overall system efficiency is improved with a standby function.
The TC78B011FTG is packaged in a P-WQFN36-0505-0.50-001 package with a footprint of just 5mm x 5mm and a height of 0.8mm, and uses trapezoidal control, allowing designers to select the most appropriate product depending on their preferred motor drive method.