Texas Instruments DRV8889-Q1 Automotive Stepper Driver
Texas Instruments DRV8889-Q1 Automotive Stepper Driver supports up to a 1.5A full-scale current with an internal micro-stepping indexer. The device features smart tune decay technology, an advanced stall detection algorithm, and integrated current sensing. With a simple step/dir interface to manage the direction and step rate, Texas Instruments DRV8889-Q1 supports up to 1/256 levels of micro-stepping. Integrated current sensing eliminates the need for two external resistors. This feature saves board space and cost. With an advanced stall detection algorithm, designers can detect if the motor stopped and take action as needed, improving efficiency and reducing noise.
Features
- AEC-Q100 qualified for automotive
- Up to 1/256 micro-stepping
- Integrated current sense functionality
- No sense are resistors required
- Smart tune decay technology, Fixed slow, and mixed decay options
- 4.5 to 45V Operating supply voltage range
- Low RDS(ON): 900mΩ HS + LS at 13.5V, 25°C
- High current capacity per bridge
- 2.4A peak, 1.5A full-scale, 1.1A rms
- TRQ_DAC bits to scale full-scale current
- Configurable off-time PWM chopping
- 7μs, 16μs, 24μs, or 32μs
- Simple STEP/DIR interface
- SPI with daisy chain support
- Low-current sleep mode (2μA)
- Programmable output slew rate
- Spread-spectrum clocking to minimize EMI
- Protection features
- VM undervoltage lockout
- Overcurrent protection
- Stall detection
- Open load detection
- Overtemperature warning and shutdown
- Undertemperature warning
- Fault condition indication pin (nFAULT)
Applications
- Automotive bipolar stepper motors
- Headlight position adjustment
- Head-up display (HUD)
- HVAC stepper motors
- Electronic fuel injection (EFI)
Simplified Schematic
Related Development Tool
Texas Instruments DRV8889-Q1EVM Evaluation Module
Evaluates the DRV8889-Q1, an integrated, dual H-bridge driver for auto stepper motor applications.
Published: 2020-01-21
| Updated: 2025-03-06