DRV8886 Texas instruments

DRV8886

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DRV8886

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Описание

The DRV8886 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 DRV8886 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 DRV8886 uses an internal current sense architecture to eliminate the need for two external power sense resistors, saving PCB area and system cost. The DRV8886 uses an internal fixed off-time PWM current regulation scheme adjustable between slow and mixed decay options.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.

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
Slow and mixed decay options
8 to 37-V Operating supply voltage range
Low R_DS(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
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)

Number of full bridges	2
Vs (min) (V)	8
Vs ABS (max) (V)	40
Full-scale current (A)	2
Peak output current (A)	3
RDS(ON) (HS + LS) (mΩ)	550
Sleep current (µA)	20
Control mode	STEP/DIR
Control interface	Hardware (GPIO)
Microstepping levels	16
Features	Current Regulation, Integrated Current Sensing
Rating	Catalog
Operating temperature range (°C)	-40 to 125