DRV8434

ACTIVO

Controlador de motor bipolar de paso de 48 V y 2.5 A con detección de corriente integrada y micropas

Detalles del producto

Number of full bridges 2 Vs (min) (V) 4.5 Vs ABS (max) (V) 50 Full-scale current (A) 2.5 Peak output current (A) 4 RDS(ON) (HS + LS) (mΩ) 330 Sleep current (µA) 2 Control mode STEP/DIR Control interface Hardware (GPIO) Microstepping levels 256 Features Current Regulation, Integrated Current Sensing, Smart Tune Rating Catalog Operating temperature range (°C) -40 to 125
Number of full bridges 2 Vs (min) (V) 4.5 Vs ABS (max) (V) 50 Full-scale current (A) 2.5 Peak output current (A) 4 RDS(ON) (HS + LS) (mΩ) 330 Sleep current (µA) 2 Control mode STEP/DIR Control interface Hardware (GPIO) Microstepping levels 256 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 x 6.4 VQFN (RGE) 24 16 mm² 4 x 4
  • PWM Microstepping Stepper Motor Driver
    • Simple STEP/DIR Interface
    • Up to 1/256 Microstepping Indexer
  • Integrated Current Sense Functionality
    • No Sense Resistors Required
    • ±4% Full-Scale Current Accuracy
  • Smart tune, slow, and mixed decay options
  • 4.5 to 48-V Operating Supply Voltage Range
  • Low RDS(ON): 330 mΩ HS + LS at 24 V, 25°C
  • High Current Capacity: 2.5 A Full-Scale, 1.8 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-Current Sleep Mode (2 µA)
  • Spread spectrum clocking for low EMI
  • Small Package and Footprint

  • Protection Features
    • VM Undervoltage Lockout (UVLO)
    • Charge Pump Undervoltage (CPUV)
    • Overcurrent Protection (OCP)
    • Open Load Detection (OL)
    • 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
    • ±4% Full-Scale Current Accuracy
  • Smart tune, slow, and mixed decay options
  • 4.5 to 48-V Operating Supply Voltage Range
  • Low RDS(ON): 330 mΩ HS + LS at 24 V, 25°C
  • High Current Capacity: 2.5 A Full-Scale, 1.8 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-Current Sleep Mode (2 µA)
  • Spread spectrum clocking for low EMI
  • Small Package and Footprint

  • Protection Features
    • VM Undervoltage Lockout (UVLO)
    • Charge Pump Undervoltage (CPUV)
    • Overcurrent Protection (OCP)
    • Open Load Detection (OL)
    • Thermal Shutdown (OTSD)
    • Fault Condition Output (nFAULT)

The DRV8434 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 DRV8434 is capable of driving up to 2.5-A full-scale output current (dependent on PCB design).

The DRV8434 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, 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, open load, and overtemperature. Fault conditions are indicated by the nFAULT pin.

The DRV8434 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 DRV8434 is capable of driving up to 2.5-A full-scale output current (dependent on PCB design).

The DRV8434 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, 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, open load, and overtemperature. Fault conditions are indicated by the nFAULT pin.

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Documentación técnica

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* Data sheet DRV8434 Stepper Driver With Integrated Current Sense, 1/256 Microstepping, STEP/DIR Interface and smart tune Technology datasheet (Rev. A) PDF | HTML 27 abr 2021
Application brief Advantages of Integrated Current Sensing (Rev. B) PDF | HTML 20 jun 2022
Application note How to Drive Unipolar Stepper Motor with the DRV8xxx PDF | HTML 03 dic 2021
Application note How to Improve Motion Smoothness and Accuracy of Stepper Motors (Rev. A) PDF | HTML 11 oct 2021
Application note Intelligent Stepper Motor Driver (Rev. B) PDF | HTML 20 ene 2021
Application note Methods to Configure Current Regulation for Brushed and Stepper Motors (Rev. B) PDF | HTML 19 ene 2021
Certificate DRV8434EVM EU RoHS Declaration of Conformity (DoC) 18 ene 2021
Technical article 4 key questions about motor design challenges PDF | HTML 30 nov 2020
Application note How to Reduce Audible Noise in Stepper Motors PDF | HTML 21 abr 2020
White paper How smart tune regulates current in stepper motors (Rev. A) 19 mar 2019
Application brief Smart Tuning for Efficient Stepper Driving 20 nov 2018
Application note PowerPAD™ Thermally Enhanced Package (Rev. H) 06 jul 2018
Application brief PowerPAD™ Made Easy (Rev. B) 12 may 2004

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

DRV8434EVM — Placa de controlador de motor de paso de interfaz de control DRV8434 STEP/DIR

El módulo de evaluación DRV8434 (EVM) permite una fácil evaluación del dispositivo DRV8434.

Los dispositivos DRV8434 son soluciones integradas de controlador de motor para motores paso a paso bipolares. El dispositivo integra dos puentes en H MOSFET de potencia de canal N, circuitos de regulación y (...)

Guía del usuario: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HTSSOP (PWP) 28 Ultra Librarian
VQFN (RGE) 24 Ultra Librarian

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

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Soporte y capacitación

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