TI DRV10987SPWPR

The DRV10987 is a three-phase sensorless 180° sinusoidal motor driver with integrated power MOSFETs, capable of delivering up to 2A continuous drive current. The device is designed for cost-sensitive, low-noise fan and pump applications requiring minimal external components, where low power consumption is a key concern.

The DRV10987 can deliver current to the motor at supply voltages as low as 6.2V. If the supply voltage exceeds 28V, the device stops driving the motor and protects the DRV10987 circuitry.

The DRV10987 employs a proprietary sensorless control scheme to provide continuous sinusoidal drive, significantly reducing pure tones typically generated during commutation. The device features a simple and flexible interface design. Motor control can be achieved directly via PWM, analog, or I²C inputs. Motor speed feedback is available simultaneously through both the FG pin and the I²C interface.

The DRV10987 integrates a buck regulator that efficiently steps down the supply voltage to 5V to power both internal and external circuits. A 3.3V LDO is also available to supply external circuits. The standby mode (8.5mA) variant (DRV10987S) keeps the regulator active, while the sleep mode (48μA) variant (DRV10987D) shuts down the regulator.

Users can reprogram specific motor parameters in registers and program the EEPROM via the I²C interface to help optimize performance for a given application. The DRV10987 comes in a thermally efficient HTSSOP 24-pin package with an exposed thermal pad. The rated operating ambient temperature range is -40°C to 125°C.

• Operating voltage range:
  • Motor operation: 6.2V to 28V
• Total driver H + L rDS(on): 250mΩ at TA = 25°C
• Drive current: 2A continuous winding current (3A peak)
• Sinusoidal 180° sensorless commutation scheme
• Configurable output PWM slew rate and frequency for EMI management
• Initial position detection algorithm to prevent reverse rotation during startup
• No external sense resistors required
• Flexible user interface options:
  • I²C interface: access to command and feedback registers
  • Dedicated SPEED pin: accepts analog or PWM input
  • Dedicated FG pin: provides TACH feedback
• Spin curve customization via EEPROM
• Forward/reverse control via DIR pin
• Integrated buck converter: 5V, 100mA
• Integrated LDO: 3.3V, 20mA
• Standby current: 8.5mA
• Supply current in standby mode: 8.5mA (DRV10987S)
• Supply current in sleep mode: 48μA (DRV10987D)
• Protection features:
  • Overcurrent protection (phase-to-phase, phase-to-ground, and phase-to-VCC short circuit protection)
  • Lock detection for rotor lock condition
  • Anti-voltage surge (AVS) protection
  • Undervoltage lockout (UVLO)
  • Overvoltage protection
  • Thermal warning and thermal shutdown
• Thermally enhanced package

• Floor fans and ceiling fans
• Air purifiers and humidifiers
• Dryer circulation fans
• Drainage pumps and water pumps
• Three-phase BLDC motors and PMSM motors