Detalles del producto

Number of full bridges 2 Vs (min) (V) 4 Vs ABS (max) (V) 20 Peak output current (A) 2 RDS(ON) (HS + LS) (mΩ) 900 Control mode PWM Control interface Hardware (GPIO) Features Low-Power Sleep Mode Rating Catalog Operating temperature range (°C) -40 to 125
Number of full bridges 2 Vs (min) (V) 4 Vs ABS (max) (V) 20 Peak output current (A) 2 RDS(ON) (HS + LS) (mΩ) 900 Control mode PWM Control interface Hardware (GPIO) Features Low-Power Sleep Mode Rating Catalog Operating temperature range (°C) -40 to 125
HVSSOP (DGQ) 10 14.7 mm² 3 x 4.9
  • Dual H-Bridge Motor Driver
    • Single/Dual Brushed DC
    • Stepper
    • Solenoids
  • 4 to 18V Operating Supply Voltage Range
  • Low ON-resistance: HS + LS = 900mΩ (Typical, 25°C)
  • High Output Current per H-Bridge
    • 2A Maximum Driver Current at 12V and TA = 25°C
    • Parallel Mode Available Capable of 4A Maximum Driver Current at 12V and TA = 25°C
  • Device versions:
    • DRV8421A (4-wire input): Independent Half Bridge Control
    • DRV8421B (2-wire input): Sleep Mode, Fault detect
  • Similar LV Stepper Drivers:
    • DRV8410: 1.65 to 11V (800mΩ RDS(ON))
    • DRV8411: 1.65 to 11V (400mΩ RDS(ON))
    • DRV8411A: 1.65 to 11V (400mΩ RDS(ON))
  • PWM Control Interface
  • Low-Current 3µA Sleep Mode (2-wire input version only)
  • Thermally-Enhanced Surface Mount Package
  • Protection Features
    • VM Undervoltage Lockout (UVLO)
    • Overcurrent Protection (OCP)
    • Thermal Shutdown (TSD)
    • Fault Condition Indication Pin (nFAULT) (2-wire input version only)
  • Dual H-Bridge Motor Driver
    • Single/Dual Brushed DC
    • Stepper
    • Solenoids
  • 4 to 18V Operating Supply Voltage Range
  • Low ON-resistance: HS + LS = 900mΩ (Typical, 25°C)
  • High Output Current per H-Bridge
    • 2A Maximum Driver Current at 12V and TA = 25°C
    • Parallel Mode Available Capable of 4A Maximum Driver Current at 12V and TA = 25°C
  • Device versions:
    • DRV8421A (4-wire input): Independent Half Bridge Control
    • DRV8421B (2-wire input): Sleep Mode, Fault detect
  • Similar LV Stepper Drivers:
    • DRV8410: 1.65 to 11V (800mΩ RDS(ON))
    • DRV8411: 1.65 to 11V (400mΩ RDS(ON))
    • DRV8411A: 1.65 to 11V (400mΩ RDS(ON))
  • PWM Control Interface
  • Low-Current 3µA Sleep Mode (2-wire input version only)
  • Thermally-Enhanced Surface Mount Package
  • Protection Features
    • VM Undervoltage Lockout (UVLO)
    • Overcurrent Protection (OCP)
    • Thermal Shutdown (TSD)
    • Fault Condition Indication Pin (nFAULT) (2-wire input version only)

The DRV8421 provides a dual H-bridge motor driver for home appliances and other mechatronic applications. The device can be used to drive one or two DC motors, a bipolar stepper motor, or other loads. A simple PWM interface allows easy interfacing to controller circuits.

The output block of each H-bridge driver consists of N-channel power MOSFETs configured as full H-bridges to drive the motor windings. The DRV8421 is capable of driving a maximum current of 2A from each output or 4A in parallel mode (with proper heat sinking, at 12V and TA = 25°C).

The device contains two versions having a 4-wire input (DRV8421A) or a 2-wire input (DRV8421B). The 2-wire input version (DRV8421B) contains features like enable and fault detection, while the 4-wire input version (DRV8421A) can drive four half bridges based on signals to four input terminals. A low-power sleep mode is also provided for the 2-wire input version. It shuts down internal circuitry to achieve very-low quiescent current draw. This sleep mode can be set by pulling the enable pin low.

Internal protection functions are provided for UVLO, OCP, short-circuit protection, and overtemperature. Fault conditions are indicated by a nFAULT pin in the DRV8421B, the 2-wire input device.

The DRV8421 provides a dual H-bridge motor driver for home appliances and other mechatronic applications. The device can be used to drive one or two DC motors, a bipolar stepper motor, or other loads. A simple PWM interface allows easy interfacing to controller circuits.

The output block of each H-bridge driver consists of N-channel power MOSFETs configured as full H-bridges to drive the motor windings. The DRV8421 is capable of driving a maximum current of 2A from each output or 4A in parallel mode (with proper heat sinking, at 12V and TA = 25°C).

The device contains two versions having a 4-wire input (DRV8421A) or a 2-wire input (DRV8421B). The 2-wire input version (DRV8421B) contains features like enable and fault detection, while the 4-wire input version (DRV8421A) can drive four half bridges based on signals to four input terminals. A low-power sleep mode is also provided for the 2-wire input version. It shuts down internal circuitry to achieve very-low quiescent current draw. This sleep mode can be set by pulling the enable pin low.

Internal protection functions are provided for UVLO, OCP, short-circuit protection, and overtemperature. Fault conditions are indicated by a nFAULT pin in the DRV8421B, the 2-wire input device.

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* Data sheet DRV8421 18V 2A Dual H-Bridge Stepper Driver datasheet PDF | HTML 17 jun 2024

Diseño y desarrollo

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Placa de evaluación

DRV8421BEVM — Módulo de evaluación DRV8421B

El módulo de evaluación (EVM) DRV8421 permite una fácil evaluación del dispositivo DRV8421. El EVM se programó y configuró para que funcionara desde el primer momento e hiciera arrancar los motores de inmediato. El dispositivo se puede utilizar para accionar uno o dos motores de CC, un motor paso a (...)

Guía del usuario: PDF | HTML
Archivo Gerber

DRV8421xEVM Hardware Files (Rev. A)

SLVC853A.ZIP (5670 KB)
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HVSSOP (DGQ) 10 Ultra Librarian

Pedidos y calidad

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  • RoHS
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  • 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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