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Product details

Parameters

Number of full bridges 2 Vs (Min) (V) 4.5 Vs ABS (Max) (V) 35 Full-scale current (A) 2.0 Peak output current (A) 3.2 RDS(ON) (HS + LS) (mOhms) 550 Sleep current (uA) 2 Control mode STEP/DIR Control interface Hardware (GPIO) Micro-stepping levels 256 Features Current Regulation, Integrated Current Sensing, Smart Tune Rating Catalog Operating temperature range (C) -40 to 125 open-in-new Find other Stepper motor drivers

Package | Pins | Size

HTSSOP (PWP) 28 43 mm² 9.7 x 4.4 VQFN (RGE) 24 16 mm² 4 x 4 open-in-new Find other Stepper motor drivers

Features

  • PWM microstepping stepper motor driver
    • Simple STEP/DIR interface
    • Up to 1/256 microstepping indexer
  • Integrated current sense functionality
    • No sense resistors required
    • ±5% full-scale current accuracy
  • Smart tune decay technology, fixed slow, and mixed decay options
  • 4.5 to 33-V operating supply voltage range
  • Low RDS(ON):
    • DRV8424: 330 mΩ HS + LS at 24 V, 25°C
    • DRV8425: 550 mΩ HS + LS at 24 V, 25°C
  • High current capacity per bridge
    • DRV8424: 4 A peak, 2.5 A full-scale, 1.8 A rms
    • DRV8425: 3.2 A peak, 2 A full-scale, 1.4 A rms
  • Pin to pin compatible with -

  • Configurable off-time PWM chopping
    • 7-µs, 16-µs, 24-µs, or 32-µs.
  • Supports 1.8-V, 3.3-V, 5.0-V Logic Inputs
  • Low-Ccrrent sleep mode (2 µA)
  • Spread spectrum clocking for low electromagnetic interference (EMI)
  • Small package and footprint
  • Protection features
    • VM undervoltage lockout (UVLO)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
    • Thermal shutdown (OTSD)
    • Fault condition output (nFAULT)

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Description

The DRV8424/25 are stepper motor drivers for industrial and consumer applications. The device is fully integrated with two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sensing. The DRV8424 is capable of driving up to 2.5-A full-scale output current; and the DRV8425 is capable of driving up to 2-A full-scale output current (dependent on PCB design).

The DRV8424/25 use an internal current sense architecture to eliminate the need for two external power sense resistors, saving PCB area and system cost. The devices use an internal PWM current regulation scheme selectable between smart tune, slow and mixed decay options. Smart tune automatically adjusts for optimal current regulation, compensates for motor variation and aging effects and reduces audible noise from the motor.

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 full-step to 1/256 microstepping. A low-power sleep mode is provided 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.

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NEW DRV8424 ACTIVE 35-V, 2.5-A bipolar stepper driver with integrated current sensing & 1/256 microstepping 35V, 2.5A bipolar stepper or dual brushed motor driver with integrated current sensing
NEW DRV8426 ACTIVE 35-V, 1.5-A bipolar stepper driver with integrated current sensing & 1/256 microstepping 35V, 1.5A bipolar stepper or dual brushed motor driver with integrated current sensing

Technical documentation

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Type Title Date
* Data sheet DRV8424/25 Stepper Drivers With Integrated Current Sense, 1/256 Microstepping, STEP/DIR Interface and smart tune Technology datasheet (Rev. B) Apr. 20, 2021
Application note Methods to Configure Current Regulation for Brushed and Stepper Motors (Rev. B) Jan. 19, 2021
White paper Stepper Motors Made Easy with Smart Tune (Rev. C) Nov. 01, 2020
Application note Advantages of Integrated Current Sensing (Rev. A) Oct. 09, 2020
Application note Smart Tune for Quiet and Smooth Stepper Motor Operation (Rev. A) Oct. 07, 2020
Technical article Drive unipolar stepper motors as bipolar stepper motors with a simple wiring reconfiguration Apr. 09, 2020
Technical article How stepper motors improve noise and efficiency in automotive system design Nov. 19, 2019
Application note Open Load Detection in Intergrated Drivers (Rev. A) Nov. 07, 2019
White paper How smart tune regulates current in stepper motors (Rev. A) Mar. 19, 2019
Application note Smart Tuning for Efficient Stepper Driving Nov. 20, 2018
Technical article Getting smart about tuning your stepper motor Aug. 23, 2018
Application note PowerPAD™ Thermally Enhanced Package (Rev. H) Jul. 06, 2018
Technical article The story of motor-drive integration Jan. 09, 2017
Application note PowerPAD™ Made Easy (Rev. B) May 12, 2004

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
document-generic User guide
Description

The DRV8424 evaluation module (EVM) allows easy evaluation of the DRV8424 device.

The DRV8424 devices are integrated motor-driver solutions for bipolar stepper motors. The device integrates two N-channel power MOSFET H-bridges, integrated current sense and regulation circuitry, and a microstepping (...)

Features
  • 4.5-V to 33-V operating voltage range
  • Up to 4-A peak current
  • A simple STEP/DIR input interface
  • Integrated current sense and microstepping indexer
  • Smart tune technology

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 28 View options
VQFN (RGE) 24 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

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