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 can drive 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 that is 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 dedicated nSLEEP pin provides a low-power sleep mode for a very low standby quiescent standby current. 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 micro-stepping indexer
- Integrated current sense functionality
- No sense resistors are 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 RDS(ON)
- High current capacity per bridge of 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
Simplified Schematic
Related Development Tools
Texas Instruments DRV8436EEVM Motor Driver Evaluation Module
For easy evaluation of the DRV8436E, an integrated motor-driver solution for bipolar stepper motors.
Texas Instruments DRV8436EVM Stepper Driver Evaluation Module
Fior evaluation of the DRV8436, an integrated motor-driver solution for bipolar stepper motors.