DRV8884 Texas instruments

DRV8884

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DRV8884

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Описание

The DRV8884 device is a stepper motor driver for industrial equipment applications. The device has two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sense. The DRV8884 is capable of driving up to 1.0-A full scale or 0.7-A rms output current (depending on proper PCB ground plane for thermal dissipation and at 24 V and TA = 25°C). The DRV8884 integrated current sense functionality eliminates the need for two external sense resistors.The STEP/DIR pins provide a simple control interface. The device can be configured in full-step up to 1/16 step modes. A low-power sleep mode is provided for very-low quiescent current standby using a dedicated nSLEEP pin. Internal protection functions are provided for undervoltage, charge pump faults, overcurrent, short circuits, and overtemperature. Fault conditions are indicated by an 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
8.0- to 37-V Operating supply voltage range
Low R_DS(ON): 1.4 Ω HS + LS at 24 V, 25°C
High current capacity
- 1.0-A Full scale per bridge
- 0.7-A rms per bridge
Fixed off-time PWM chopping
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)	1
Peak output current (A)	1.7
RDS(ON) (HS + LS) (mΩ)	1400
Sleep current (µA)	3
Control mode	STEP/DIR
Control interface	Hardware (GPIO)
Microstepping levels	16
Rating	Catalog
Operating temperature range (°C)	-40 to 125