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DRV8426E

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35V, 1.5A bipolar stepper or dual brushed motor driver with integrated current sensing

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Product details

Parameters

Number of full bridges 2 Vs (Min) (V) 4.5 Vs (Max) (V) 33 Full-scale current (A) 1.5 Peak output current (A) 2.5 RDS(ON) (HS + LS) (mOhms) 900 Sleep current (uA) 2 Control mode PH/EN, PWM Control interface Hardware (GPIO) Features Current Regulation, Integrated Current Sensing, Smart Tune open-in-new Find other Stepper motor drivers

Package | Pins | Size

HTSSOP (PWP) 28 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

  • Dual H-bridge motor driver
    • One bipolar stepper motor
    • Dual bidirectional brushed-DC motors
    • Four unidirectional brushed-DC motors
  • Integrated current sense functionality
    • No sense resistors required
    • ±5% Full-scale current accuracy
  • 4.5- to 33-V Operating supply voltage range
  • Multiple control interface options
    • PHASE/ENABLE (PH/EN)
    • PWM (IN/IN)
  • Smart tune, fast and mixed decay options
  • Low RDS(ON): 900 mΩ HS + LS at 24 V, 25°C
  • High Current Capacity Per Bridge
    • 2.5-A peak (brushed), 1.5-A Full-Scale (stepper)

    Pin to pin compatible with -

  • Configurable Off-Time PWM Chopping
    • 7, 16, 24 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)
  • Inrush current limiting in brushed-DC applications
  • 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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open-in-new Find other Stepper motor drivers

Description

The DRV8426E/P devices are dual H-bridge motor drivers for a wide variety of industrial applications. The devices can be used for driving two DC motors, or a bipolar stepper motor.

The output stage of the driver consists of N-channel power MOSFETs configured as two full H-bridges, charge pump regulator, current sensing and regulation, and protection circuitry. The integrated current sensing uses an internal current mirror architecture, removing the need for a large power shunt resistor, saving board area and reducing system cost. A low-power sleep mode is provided to achieve ultra- low quiescent current draw by shutting down most of the internal circuitry. Internal protection features are provided for supply undervoltage lockout (UVLO), charge pump undervoltage (CPUV), output overcurrent (OCP), and device overtemperature (TSD).

The DRV8426E/P is capable of driving a stepper motor with up to 1.5-A full scale or brushed motors with up to 2.5-A peak (dependent on PCB design).

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet DRV8426E Dual H-Bridge Motor Drivers With Integrated Current Sense datasheet (Rev. A) Oct. 21, 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
Technical articles Drive unipolar stepper motors as bipolar stepper motors with a simple wiring reconfiguration Apr. 09, 2020
Application note Various Reference Voltage Driving Techniques for Motor Drive Current Regulation (Rev. A) Jan. 27, 2020
Technical articles 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 Advantages of Integrated Current Sensing Jan. 07, 2019
Application note Smart Tuning for Efficient Stepper Driving Nov. 20, 2018
Technical articles Getting smart about tuning your stepper motor Aug. 23, 2018
Application note PowerPAD™ Thermally Enhanced Package (Rev. H) Jul. 06, 2018
Technical articles 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
75
Description

The DRV8426E evaluation module (EVM) allows easy evaluation of the DRV8426E device.

The DRV8426E devices are integrated motor-driver solutions for bipolar stepper motors or brushed DC motors. The device integrates two N-channel power MOSFET H-bridges, integrated current sense and regulation (...)

Features
  • 4.5-V to 33-V operating voltage range
  • Up to 2.5-A Peak current
  • A simple PHASE/EN input interface
  • Integrated current sense
  • Smart tune technology
EVALUATION BOARD Download
75
Description

The DRV8426P evaluation module (EVM) allows easy evaluation of the DRV8426P device.

The DRV8426P devices are integrated motor-driver solutions for bipolar stepper motors or brushed DC motors. The device integrates two N-channel power MOSFET H-bridges, integrated current sense and regulation (...)

Features
  • 4.5-V to 33-V operating voltage range
  • Up to 2.5-A peak current
  • A simple PWM input interface
  • Integrated current sense
  • Smart tune technology

CAD/CAE symbols

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

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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