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DRV8428

ACTIVE

35V, 1A bipolar stepper motor driver with integrated current sensing and 1/256 microstepping

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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) 1 Peak output current (A) 1.7 RDS(ON) (HS + LS) (mOhms) 1500 Sleep current (uA) 2 Control mode STEP/DIR Control interface Hardware (GPIO) Micro-stepping levels 256 Features Current Regulation, Integrated Current Sensing, Smart Tune open-in-new Find other Stepper motor drivers

Package | Pins | Size

HTSSOP (PWP) 16 32 mm² 5 x 6.4 WQFN (RTE) 16 9 mm² 3 x 3 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
    • ±6% Full-Scale Current Accuracy
  • Smart tune decay technology and mixed decay options
  • 4.2-V to 33-V Operating Supply Voltage Range
  • RDS(ON): 1500 mΩ HS + LS at 24 V, 25°C
  • Current Capacity Per Bridge: 1.7-A peak, 1-A Full-Scale, 0.7-A rms
  • Configurable Off-Time PWM Chopping
    • 7-µs, 16-µs, or 32-µs.
  • Supports 1.8-V, 3.3-V, 5.0-V Logic Inputs
  • Low-Current Sleep Mode (2 µA)
  • Spread spectrum clocking for low electromagnetic interference (EMI)
  • Small Package and Footprint
  • Protection Features
    • VM Undervoltage Lockout (UVLO)
    • Overcurrent Protection (OCP)
    • Thermal Shutdown (OTSD)
    • Fault Condition Output (EN/nFAULT)

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Description

The DRV8428 is a stepper motor driver 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 DRV8428 is capable of driving up to 1-A full-scale output current (dependent on PCB design).

The DRV8428 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, 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 different step modes ranging from full-step to 1/256 microstepping. 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, overcurrent, short circuits, and overtemperature. Fault conditions are indicated by the EN/nFAULT pin.

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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
NEW DRV8426 ACTIVE 35-V, 1.5-A bipolar stepper driver with integrated current sensing & 1/256 microstepping For a newer device with max 35 V, DRV8426 offers integrated current sensing, smart tuning, high microstepping, P2P scalable family and smooth quiet motion
NEW DRV8436 ACTIVE 48-V, 1.5-A bipolar stepper motor driver with integrated current sensing & 1/256 microstepping For a newer device with 50 V max, DRV8436 offers integrated current sensing, smart tuning, high microstepping, P2P scalable family & smooth quiet motion

Technical documentation

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Type Title Date
* Datasheet DRV8428 Stepper Drivers With Integrated Current Sense datasheet (Rev. A) Nov. 12, 2020
More literature DRV8428EVM EU RoHS Declaration of Conformity (DoC) Feb. 01, 2021
Application note Methods to Configure Current Regulation for Brushed and Stepper Motors (Rev. B) Jan. 19, 2021
Technical article 4 key questions about motor design challenges Nov. 30, 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
White paper Stepper Motors Made Easy with Smart Tune (Rev. C) Oct. 07, 2020
Application note How to Improve Motion Smoothness and Accuracy of Stepper Motors Sep. 18, 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
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
Application note PowerPAD™ Made Easy (Rev. B) May 12, 2004

Design & development

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Hardware development

EVALUATION BOARD Download
document-generic User guide
75
Description

The DRV8428 evaluation module (EVM) allows easy evaluation of the DRV8428 device.

The DRV8428 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 1-A peak current
  • A simple STEP/DIR input interface
  • Integrated current sense
  • Smart tune technology

Design tools & simulation

DESIGN TOOL Download
SLOR127.ZIP (12345 KB)

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 16 View options
WQFN (RTE) 16 View options

Ordering & quality

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

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