DRV8849

ACTIVO

Controlador de motor paso a paso doble de 38 V y 1.5 A con ajuste inteligente y detección de corrien

Detalles del producto

Number of full bridges 4 Vs (min) (V) 4.5 Vs ABS (max) (V) 40 Full-scale current (A) 1.5 Peak output current (A) 2.5 RDS(ON) (HS + LS) (mΩ) 900 Sleep current (µA) 2 Control mode STEP/DIR Control interface Hardware (GPIO) Microstepping levels 256 Features Current Regulation, Integrated Current Sensing, Low-Power Sleep Mode, Smart Tune Rating Catalog Operating temperature range (°C) -40 to 125
Number of full bridges 4 Vs (min) (V) 4.5 Vs ABS (max) (V) 40 Full-scale current (A) 1.5 Peak output current (A) 2.5 RDS(ON) (HS + LS) (mΩ) 900 Sleep current (µA) 2 Control mode STEP/DIR Control interface Hardware (GPIO) Microstepping levels 256 Features Current Regulation, Integrated Current Sensing, Low-Power Sleep Mode, Smart Tune Rating Catalog Operating temperature range (°C) -40 to 125
VQFN (RHH) 36 36 mm² 6 x 6
  • Dual stepper motor driver
    • STEP/DIR interface
    • Up to 1/256 microstepping indexer
  • 4.5 to 38-V Operating supply voltage range
  • 900 mΩ HS + LS RDS(ON) at 24 V, 25°C
  • 1.5 A full-scale, 1.1 A rms current per H-bridge
  • Integrated current sense functionality
    • ±5% full-scale current accuracy
    • No sense resistors required
  • Smart tune decay technology
  • Configurable off-time PWM chopping in Smart tune
    • 8-µs, 16-µs, or 32-µs
  • Supports 3.3-V, 5.0-V logic inputs
  • Low-current sleep mode (1.3 µA)
  • Protection features for each Stepper
    • VM undervoltage lockout (UVLO)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
    • Thermal shutdown (OTSD)
    • Fault condition output (nFAULT)
  • Dual stepper motor driver
    • STEP/DIR interface
    • Up to 1/256 microstepping indexer
  • 4.5 to 38-V Operating supply voltage range
  • 900 mΩ HS + LS RDS(ON) at 24 V, 25°C
  • 1.5 A full-scale, 1.1 A rms current per H-bridge
  • Integrated current sense functionality
    • ±5% full-scale current accuracy
    • No sense resistors required
  • Smart tune decay technology
  • Configurable off-time PWM chopping in Smart tune
    • 8-µs, 16-µs, or 32-µs
  • Supports 3.3-V, 5.0-V logic inputs
  • Low-current sleep mode (1.3 µA)
  • Protection features for each Stepper
    • VM undervoltage lockout (UVLO)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
    • Thermal shutdown (OTSD)
    • Fault condition output (nFAULT)

The DRV8849 is a dual stepper motor driver for industrial and consumer applications. The device is fully integrated with four N-channel power MOSFET H-bridge drivers, one microstepping indexer for each stepper, and integrated current sensing. The DRV8849 is capable of driving up to 1.5-A full-scale output current (dependent on PCB design).

The DRV8849 uses an internal current sense architecture to eliminate the need for four external power sense resistors, saving PCB area and system cost. The device uses an internal PWM current regulation scheme with smart tune decay mode. Smart tune automatically adjusts for desired current regulation, compensates for motor variation and aging effects and reduces audible noise and vibration from the motor.

Simple STEP/DIR interfaces allow an external controller to manage the direction and step rate of the stepper motors. 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 one nFAULT pin for each stepper.

The DRV8849 is a dual stepper motor driver for industrial and consumer applications. The device is fully integrated with four N-channel power MOSFET H-bridge drivers, one microstepping indexer for each stepper, and integrated current sensing. The DRV8849 is capable of driving up to 1.5-A full-scale output current (dependent on PCB design).

The DRV8849 uses an internal current sense architecture to eliminate the need for four external power sense resistors, saving PCB area and system cost. The device uses an internal PWM current regulation scheme with smart tune decay mode. Smart tune automatically adjusts for desired current regulation, compensates for motor variation and aging effects and reduces audible noise and vibration from the motor.

Simple STEP/DIR interfaces allow an external controller to manage the direction and step rate of the stepper motors. 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 one nFAULT pin for each stepper.

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Documentación técnica

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* Data sheet DRV8849: 38 V, 1.5 A Dual Stepper Driver with Integrated Current Sense, 1/256 Microstepping, STEP/DIR Interface and Smart Tune datasheet (Rev. A) PDF | HTML 13 jul 2023
Product overview Brushed and Stepper Motor Drivers in Video Surveillance PDF | HTML 22 feb 2024
Product overview Two New Dual-Stepper Motor Drivers PDF | HTML 22 feb 2024
Certificate DRV8849EVM EU RoHS Declaration of Conformity (DoC) 28 mar 2023

Diseño y desarrollo

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Placa de evaluación

DRV8849EVM — Módulo de evaluación DRV8849 para controlador de motor paso a paso doble con ajuste inteligente y de

El DRV8849 es un controlador de motor paso a paso dual para aplicaciones industriales y de consumo. El dispositivo está totalmente integrado con cuatro controladores de puente en H MOSFET de potencia de canal N, un indexador de micropasos para cada paso y detección de corriente integrada. El (...)
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Paquete Pasadores Descargar
VQFN (RHH) 36 Ver opciones

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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