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DRV8886AT
37-V, 2-A bipolar stepper motor driver with integrated current sensing & smart tune technology
Data sheet
DRV8886AT
- PWM microstepping stepper motor driver
- Up to 1/16 microstepping
- Non-circular and standard ½ step modes
- Integrated current sense functionality
- No sense resistors required
- ±6.25% Full-scale current accuracy
- Smart tune adaptive decay technology,
slow, and mixed decay options - 8 to 37-V Operating supply voltage range
- Low RDS(ON): 550 mΩ HS + LS at 24 V, 25°C
- High current capacity
- 3-A Peak per bridge
- 2-A Full-scale per bridge
- 1.4-A rms per bridge
- Dynamic and fixed off-time PWM current regulation
- Simple STEP/DIR interface
- Low-current sleep mode (20 µA)
- Small package and footprint
- 24 HTSSOP PowerPAD™ package
- 28 WQFN package
- Protection features
- VM undervoltage lockout (UVLO)
- Charge pump undervoltage (CPUV)
- Overcurrent protection (OCP)
- Thermal shutdown (TSD)
- Fault condition indication pin (nFAULT)
The DRV8886AT is a stepper motor driver for industrial and consumer end equipment applications. The device is fully integrated with two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sensing. The DRV8886AT is capable of driving up to 2-A full scale or 1.4-A rms output current (24-V and TA = 25°C, dependent on PCB design).
The DRV8886AT uses an internal current sense architecture to eliminate the need for two external power sense resistors saving PCB area and system cost. The DRV8886AT uses an internal PWM current regulation scheme adjustable between smart tune adaptive decay technology, slow, and mixed decay options. Smart tune adaptive decay technology automatically adjusts for optimal current regulation performance and compensates for motor variation and aging effects.
A simple STEP/DIR interface allows an external controller to manage the direction and step rate of the stepper motor. The device can be configured in different step modes ranging from full-step to 1/16 microstepping. A low-power sleep mode is provided for very low standby quiescent standby current using a dedicated nSLEEP pin.
Device protection features are provided for supply undervoltage, charge pump faults, overcurrent, short circuits, and overtemperature. Fault conditions are indicated by the nFAULT pin.
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Technical documentation
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View all 9 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | DRV8886AT 2-A Stepper Motor Driver With Integrated Current Sense and Smart Tune Technology datasheet (Rev. C) | PDF | HTML | 11 Mar 2020 |
| Application brief | Advantages of Integrated Current Sensing (Rev. B) | PDF | HTML | 20 Jun 2022 | |
| Application note | Best Practices for Board Layout of Motor Drivers (Rev. B) | PDF | HTML | 14 Oct 2021 | |
| EVM User's guide | DRV8886AT Evaluation Module User's Guide (Rev. A) | 10 Sep 2019 | ||
| White paper | How smart tune regulates current in stepper motors (Rev. A) | 19 Mar 2019 | ||
| Application brief | Smart Tuning for Efficient Stepper Driving | 20 Nov 2018 | ||
| Technical article | Getting smart about tuning your stepper motor | PDF | HTML | 23 Aug 2018 | |
| Application note | PowerPAD™ Thermally Enhanced Package (Rev. H) | 06 Jul 2018 | ||
| Application brief | PowerPAD™ Made Easy (Rev. B) | 12 May 2004 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
DRV8886ATEVM — DRV8886AT 2.0A Stepper Motor Driver With Integrated Sense Resistor Evaluation Module
The DRV8886AT evaluation module (EVM) demonstrates the integrated current sensing capabilities and performance of the DRV8886AT integrated circuit from Texas Instruments. The EVM includes the DRV8886AT to control a stepper motor, a MSP430F2617 to control the DRV8886AT inputs, and a USB to UART to (...)
User guide: PDF
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HTSSOP (PWP) | 24 | Ultra Librarian |
| WQFN (RHR) | 28 | Ultra Librarian |
Ordering & quality
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Information included:
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