High Voltage 3-Phase Full-Wave PWM Brushless Motor Driver

The project presented here is a three-phase sinewave PWM driver for high-voltage brushless motors. The board is built using TB67B000AHG chip, which is a high-voltage IC capable of handling 600V. The TB67B000AHG has a 2-in-1 (MCP) structure of controller (sine-wave PWM / wide-angle conduction) and a high-voltage driver. The rotation speed of a DC brushless motor can be controlled directly by the speed control signal (analog voltage) by an onboard trimmer potentiometer or from a microcontroller. The board supports a 3-phase BLDC motor with Hall sensors. On Board Trimmer, the potentiometer helps users to control the speed of the brushless motor.

Features

• Operating power supply voltage range: VCC = 13.5 to 16.5 V
• Motor power supply operating voltage range: VBB = 50 to 420 V (Up to 450V, Limited due to Capacitor Voltage)
• A Controller and a high-voltage driver integrated in a single package.
• Sine-wave PWM drive or wide-angle commutation drive is selectable.
• Built-in oscillator circuit (carrier frequency = f_osc/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))
• PCB Dimensions 64.77 x 57.15 mm
• 4 x 3.2 mm Mounting Holes
• 2 x 8 mm Holes for Heat-Sink

Sequence of power supply

Sequence of power supply: Please supply the power by following the procedure of (1) to (3).

• Apply power supply of VCC. (Power Supply for Controller Chip)
• In applying Vcc, connect Vsp to GND or open. (VSP=VS On PCB)
• In case terminals of CW/CCW, LA, and SS are controlled by signals of external IC, connect them to GND or open. After applying power supply of VCC, set the terminal of CW/CCW, LA, and SS high-level if needed.
• Apply power supply of VBB. (Motor Power)
• Apply voltage to Vsp.