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Texas Instruments DRV8436 Stepper Motor Driver

Texas Instruments DRV8436 Stepper Motor Driver is for industrial and consumer end equipment applications. The device is fully integrated with two N-channel power MOSFET H-bridge drivers, a micro-stepping indexer, and integrated current sensing. The Texas Instruments DRV8436 is capable of driving up to 1.1A RMS (dependent on PCB design).

The DRV8436 uses an internal current sense architecture to eliminate the need for two external power sense resistors, saving PCB area, and system cost. The device uses an internal PWM current regulation scheme selectable between smart tune, fast, slow, and mixed decay options. Smart tune 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. A low-power sleep mode is provided for very low standby quiescent standby current using a dedicated nSLEEP pin. Protection features are provided for supply undervoltage, charge pump faults, overcurrent, short circuits, and overtemperature. Fault conditions are indicated by the nFAULT pin.

Features

PWM micro-stepping stepper motor driver
- Simple STEP/DIR interface
- Up to 1/256 Microstepping indexer
Integrated current sense functionality
- No sense resistors required
- ±7.5% Full-scale current accuracy
Smart tune decay technology, fixed slow, and mixed decay options
4.5 to 48V Operating supply voltage range
900mΩ HS + LS at 24V, 25°C low R_DS(ON)
High current capacity per bridge: 2.4A peak, 1.5A Full-Scale, 1.1A rms
Configurable off-time PWM chopping
- 7µs, 16µs, 24µs, or 32µs

Supports 1.8V, 3.3V, 5.0V logic inputs
Low-current sleep mode (2µA)
Small package and footprint
Protection features
- VM undervoltage lockout (UVLO)
- Charge pump undervoltage (CPUV)
- Overcurrent protection (OCP)
- Thermal shutdown (OTSD)
- Fault condition output (nFAULT)

Applications

Multi-purpose printers and scanners
3D printers and laser beam printers
Automatic teller and money handling machines
Textile and sewing machines

Stage lighting equipment
CCTV, security, and dome cameras
Office and home automation
Factory automation and robotics

Texas Instruments DRV8436 Stepper Motor Driver

Features

Applications

Simplified Schematic

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