DRV8704

ACTIVE

45-V, dual H-bridge smart gate driver

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Product details

Parameters

Number of full bridges 2 Vs (Min) (V) 8 Vs (Max) (V) 52 Sleep current (uA) 65 Control mode PWM Control interface Hardware (GPIO), SPI Features Current Regulation Rating Catalog open-in-new Find other Brushed DC (BDC) motor drivers

Package | Pins | Size

HTSSOP (DCP) 38 43 mm² 9.7 x 4.4 open-in-new Find other Brushed DC (BDC) motor drivers

Features

  • Pulse Width Modulation (PWM) Motor Driver
    • Drives External N-Channel MOSFETs
    • PWM Control Interface for Dual DC Motors
    • Supports 100% PWM Duty Cycle
  • 8-V to 52-V Operating Supply Voltage Range
  • Adjustable Gate Drive (4 Levels)
    • 50-mA to 200-mA Source Current
    • 100-mA to 400-mA Sink Current
  • Integrated PWM Current Regulation
  • Flexible Decay Modes
    • Automatic Mixed Decay Mode
    • Slow Decay
    • Fast Decay
    • Mixed Decay (Adjustable Percent Fast)
  • Highly Configurable SPI
  • Torque DAC to Digitally Scale Current
  • Low-Current Sleep Mode (65 µA)
  • 5-V, 10-mA LDO Regulator
  • Thermally-Enhanced Surface-Mount Package
    • 38-Pin HTSSOP (PowerPAD)
  • Protection Features
    • VM Undervoltage Lockout (UVLO)
    • Gate Driver Fault (PDF)
    • Overcurrent Protection (OCP)
    • Thermal Shutdown (TSD)
    • Fault Condition Indication Pin (nFAULT)
    • Fault Diagnostics through SPI

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Description

The DRV8704 is a dual-brushed motor controller for industrial equipment applications. The device controls external N-channel MOSFETs configured as two H-bridges.

Motor current can be accurately controlled using adaptive blanking time and various current decay modes, including an automatic mixed decay mode.

A simple PWM interface allows easy interfacing to controller circuits. A SPI serial interface is used to program the device operation. Output current (torque), gate drive settings, and decay mode are all programmable through a SPI serial interface.

Internal shutdown functions are provided for overcurrent protection, short-circuit protection, gate driver faults, undervoltage lockout (UVLO), and overtemperature. Fault conditions are indicated by a FAULTn pin, and each fault condition is reported by a dedicated bit through SPI.

The DRV8704 is packaged in a PowerPAD™ 38-pin HTSSOP package with thermal pad (Eco-friendly: RoHS & no Sb/Br).

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 9
Type Title Date
* Datasheet DRV8704 52-V Dual H-Bridge PWM Gate Driver datasheet Oct. 28, 2015
Application note Best Practices for Board Layout of Motor Drivers (Rev. A) Jan. 22, 2019
Application note Cut-Off Switch in High-Current Motor-Drive Applications (Rev. A) Aug. 20, 2018
Application note PowerPAD™ Thermally Enhanced Package (Rev. H) Jul. 06, 2018
Technical articles Why are you still driving automotive motors with relays? Jul. 13, 2017
Technical articles The story of motor-drive integration Jan. 09, 2017
Technical articles How to create a dynamic power solution for stepper motors, relays and LEDs Nov. 01, 2016
Technical articles How to avoid motor and system overvoltage using AVS technology without external components Oct. 14, 2016
Application note PowerPAD™ Made Easy (Rev. B) May 12, 2004

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
49
Description

The DRV8704 evaluation module (EVM) demonstrates the integrated current regulating capabilities and performance of the DRV8704 integrated circuit from Texas Instruments. The EVM includes the DRV8704 to control two brushed motors, a simple jumper connection scheme to route the DRV8704 inputs, a (...)

Features
  • Highly configurable SPI interface
  • 8V to 52V supply voltage range
  • Multiple decay modes
  • Adjustable current regulation
  • 5V, 10-mA LDO regulator

CAD/CAE symbols

Package Pins Download
HTSSOP (DCP) 38 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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