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 PWM Control interface Hardware (GPIO) Features Current Regulation, 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 PWM Control interface Hardware (GPIO) Features Current Regulation, Smart Tune Rating Catalog Operating temperature range (°C) -40 to 125
VQFN (RHH) 36 36 mm² 6 x 6

  • Integrates four H-bridges
  • Can drive different configurations -
    • Two stepper motors
    • Four brushed-DC motors
    • Three brushed-DC motors

    • One stepper and two brushed-DC motors
    • One stepper and one brushed-DC motor

  • Footprint and software compatible with similar drivers from other vendors
  • 4.5-V to 38-V Operating supply voltage range
  • Low RDS(ON): 900 mΩ HS + LS at 24 V, 25°C
  • 1.5-A full-scale current Per Bridge
  • Industry standard PHASE/Ixx Interface
  • Synchronous rectification

  • Full, 1/2 and 1/4 step operation for stepper motors

  • Forward, reverse and coast modes for DC motors

  • Smart tune decay for smooth and quiet operation

  • Supports 3.3 V and 5 V logic inputs

  • Protection features

    • VM undervoltage lockout (UVLO)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
    • Thermal shutdown (OTSD)

  • Integrates four H-bridges
  • Can drive different configurations -
    • Two stepper motors
    • Four brushed-DC motors
    • Three brushed-DC motors

    • One stepper and two brushed-DC motors
    • One stepper and one brushed-DC motor

  • Footprint and software compatible with similar drivers from other vendors
  • 4.5-V to 38-V Operating supply voltage range
  • Low RDS(ON): 900 mΩ HS + LS at 24 V, 25°C
  • 1.5-A full-scale current Per Bridge
  • Industry standard PHASE/Ixx Interface
  • Synchronous rectification

  • Full, 1/2 and 1/4 step operation for stepper motors

  • Forward, reverse and coast modes for DC motors

  • Smart tune decay for smooth and quiet operation

  • Supports 3.3 V and 5 V logic inputs

  • Protection features

    • VM undervoltage lockout (UVLO)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
    • Thermal shutdown (OTSD)

The DRV8845 is a quad full-bridge driver for a wide variety of industrial applications. The device can be used for driving up to two stepper motors or up to four brushed-DC motors. Each full-bridge output is rated up to 1.5 A and 38 V. The DRV8845 includes pulse width modulation (PWM) current regulators, along with 2- bit nonlinear DACs (digital-to-analog converters) that allow stepper motors to be controlled in full, half, and quarter steps; and DC motors in forward, reverse, and coast modes.

The PWM current regulator uses the smart tune decay mode for motor audible noise and vibration reduction, increased accuracy, and reduced power dissipation. Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation.

Protection features include thermal shutdown with hysteresis (OTSD), undervoltage lockout (UVLO) and overcurrent protection (OCP). Special power up sequencing is not required.

The DRV8845 is supplied in a 6 mm x 6 mm, 36 pin QFN package with exposed pad for enhanced thermal performance.

The DRV8845 is a quad full-bridge driver for a wide variety of industrial applications. The device can be used for driving up to two stepper motors or up to four brushed-DC motors. Each full-bridge output is rated up to 1.5 A and 38 V. The DRV8845 includes pulse width modulation (PWM) current regulators, along with 2- bit nonlinear DACs (digital-to-analog converters) that allow stepper motors to be controlled in full, half, and quarter steps; and DC motors in forward, reverse, and coast modes.

The PWM current regulator uses the smart tune decay mode for motor audible noise and vibration reduction, increased accuracy, and reduced power dissipation. Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation.

Protection features include thermal shutdown with hysteresis (OTSD), undervoltage lockout (UVLO) and overcurrent protection (OCP). Special power up sequencing is not required.

The DRV8845 is supplied in a 6 mm x 6 mm, 36 pin QFN package with exposed pad for enhanced thermal performance.

Descargar Ver vídeo con transcripción Video

Productos similares que pueden interesarle

open-in-new Comparar alternativas
Misma funcionalidad con diferente configuración de pines que el dispositivo comparado
DRV8849 ACTIVO Controlador de motor paso a paso doble de 38 V y 1.5 A con ajuste inteligente y detección de corrien STEP/DIR interface with 1/256 microstepping and integrated current sense

Documentación técnica

star =Principal documentación para este producto seleccionada por TI
No se encontraron resultados. Borre su búsqueda y vuelva a intentarlo.
Ver todo 4
Tipo Título Fecha
* Data sheet DRV8845: 38 V, 1.5 A Quad H-Bridge Motor Driver with Smart Tune Technology datasheet (Rev. A) PDF | HTML 21 dic 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 DRV8845EVM EU RoHS Declaration of Conformity (DoC) 28 mar 2023

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

DRV8845EVM — Módulo de evaluación DRV8845 para controlador de motor de puente en H cuádruple con tecnología de aj

El DRV8845 es un controlador de puente completo cuádruple para una amplia variedad de aplicaciones industriales. El dispositivo se puede utilizar para accionar hasta dos motores paso a paso o hasta cuatro motores de corriente continua con escobillas. Cada salida de puente completo tiene una (...)
Guía del usuario: PDF | HTML
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

Los productos recomendados pueden tener parámetros, módulos de evaluación o diseños de referencia relacionados con este producto de TI.

Soporte y capacitación

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI. ​​​​​​​​​​​​​​

Videos