Overview
The DRV10970PWPR is an integrated three-phase Brushless DC (BLDC) motor driver designed by Texas Instruments. This device is tailored for home appliances, cooling fans, and other general-purpose motor control applications. It features embedded intelligence, a small form factor, and a simple pinout structure, which reduce design complexity, board space, and system cost. The DRV10970PWPR includes advanced protection features to enhance system robustness and reliability.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 24-pin TSSOP with PowerPAD™ |
| Body Size | 7.80 mm × 6.40 mm |
| Output Current | 1-A RMS, 1.5-A Peak per phase |
| Total Driver H + L RDSON | 400 mΩ |
| Current Limit Threshold | 1.3 A to 1.7 A (VM = 12 V, Rcs = 20 kΩ) |
| Supply Voltage Undervoltage Lockout | VUVLO-Th-f (threshold voltage) |
| Sleep Mode Current Consumption | < 35 µA |
| Operating Temperature Range | -40°C to 125°C |
Key Features
- Embedded 180° sine-wave and trapezoidal commutations
- Adaptive drive angle adjustment for optimized efficiency
- Support for three or single Hall sensor configurations
- Motor spin direction control and configurable Hall placement (30° or 0°)
- Adjustable retry timing after motor lock
- Programmable current-limit function
- Tachometer output for motor speed information
- Motor lock report on open-drain RD pin
- Protection features: overcurrent, undervoltage, thermal shutdown, and motor lock detect
Applications
- Cooling fans
- Small appliances
- General-purpose BLDC motor driver applications
Q & A
- What is the DRV10970PWPR used for? The DRV10970PWPR is used for controlling three-phase Brushless DC motors in applications such as cooling fans, small appliances, and general-purpose motor control.
- What is the output current capability of the DRV10970PWPR? The device can drive up to 1-A RMS and 1.5-A peak output current per phase.
- What are the key protection features of the DRV10970PWPR? The device includes overcurrent protection, undervoltage lockout, thermal shutdown, and motor lock detection.
- Can the DRV10970PWPR operate with a single Hall sensor? Yes, the device supports both three Hall sensor and single Hall sensor configurations to minimize system cost.
- How does the DRV10970PWPR handle motor lock conditions? The device detects motor lock conditions based on the absence of Hall input switching and retries after an adjustable auto-retry time set by a capacitor connected to the RETRY pin.
- What is the sleep mode current consumption of the DRV10970PWPR? The device consumes less than 35 µA of current in sleep mode.
- What are the supported commutation modes of the DRV10970PWPR? The device supports both trapezoidal and sinusoidal commutation modes.
- How is the motor speed controlled in the DRV10970PWPR? The motor speed is controlled by the PWM input duty cycle, which converts to an average output voltage of VM multiplied by the duty cycle.
- Can the motor direction be changed while the motor is spinning? Yes, the rotational direction can be changed while the motor is spinning, with a delay time before reversing the direction.
- What is the purpose of the FG output pin in the DRV10970PWPR? The FG output pin provides motor speed information aligned with the U phase Hall sensor signal.
