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DRV8424

AKTIV

Bipolarer-Schrittmotortreiber für 35 V und 2,5 A mit integrierter Stromerkennung & 1/256-Mikroschrit

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Datenblatt

DRV8424

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Vs ABS (max) (V) 35 Vs (min) (V) 4.5 Peak output current (A) 4 Control mode STEP/DIR Control interface Hardware (GPIO) Number of full bridges 2 Full-scale current (A) 2.5 RDS(ON) (HS + LS) (mΩ) 330 Sleep current (µA) 2 Microstepping levels 256 Decay mode Mixed, Slow, Smart Tune Features Current Regulation, Integrated Current Sensing, Smart Tune Rating Catalog Operating temperature range (°C) -40 to 125
Vs ABS (max) (V) 35 Vs (min) (V) 4.5 Peak output current (A) 4 Control mode STEP/DIR Control interface Hardware (GPIO) Number of full bridges 2 Full-scale current (A) 2.5 RDS(ON) (HS + LS) (mΩ) 330 Sleep current (µA) 2 Microstepping levels 256 Decay mode Mixed, Slow, Smart Tune Features Current Regulation, Integrated Current Sensing, Smart Tune Rating Catalog Operating temperature range (°C) -40 to 125
HTSSOP (PWP) 28 62.08 mm² (9.7 mm × 6.4 mm) VQFN (RGE) 24 16 mm² (4 mm × 4 mm)
  • 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)
  • 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)

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.

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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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt DRV8424/25 Stepper Drivers With Integrated Current Sense, 1/256 Microstepping, STEP/DIR Interface and smart tune Technology datasheet (Rev. C) PDF | HTML 21.04.2022
Application brief Advantages of Integrated Current Sensing (Rev. B) PDF | HTML 20.06.2022
Anwendungshinweis How to Drive Unipolar Stepper Motor with the DRV8xxx PDF | HTML 03.12.2021
Anwendungshinweis How to Improve Motion Smoothness and Accuracy of Stepper Motors (Rev. A) PDF | HTML 11.10.2021
Anwendungshinweis Methods to Configure Current Regulation for Brushed and Stepper Motors (Rev. B) PDF | HTML 19.01.2021
Anwendungshinweis High Resolution Microstepping Driver With the DRV88xx Series (Rev. A) PDF | HTML 21.12.2020
Technischer Artikel 4 key questions about motor design challenges PDF | HTML 30.11.2020
Anwendungshinweis How to Reduce Audible Noise in Stepper Motors (Rev. A) PDF | HTML 21.04.2020
Whitepaper How smart tune regulates current in stepper motors (Rev. A) 19.03.2019
Application brief Smart Tuning for Efficient Stepper Driving 20.11.2018
Application brief Small Motors in Large Appliances 20.07.2018
Anwendungshinweis PowerPAD™ Thermally Enhanced Package (Rev. H) 06.07.2018
Application brief PowerPAD™ Made Easy (Rev. B) 12.05.2004

Design und Entwicklung

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Evaluierungsplatine

DRV8424EVM — Schrittmotor-Treiberplatine für DRV8424-SCHRITT-/dir-Steuerschnittstelle

Das Evaluierungsmodul DRV8424 (EVM) ermöglicht die einfache Evaluierung des Bausteins DRV8424.

Die DRV8424-Bausteine sind integrierte Motortreiberlösungen für bipolare Schrittmotoren. Der Baustein enthält zwei N-Kanal-Leistungs-MOSFET-H-Brücken, eine integrierte Schaltung zur Strommessung und (...)

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HTSSOP (PWP) 28 Ultra Librarian
VQFN (RGE) 24 Ultra Librarian
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