DRV8703-Q1

ACTIVE

Automotive 47-V H-bridge smart gate driver with SPI control

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Product details

Parameters

Number of full bridges 1 Vs (Min) (V) 5.5 Vs ABS (Max) (V) 47 RDS(ON) (HS + LS) (mOhms) 0 Sleep current (uA) 14 Control mode Independent 1/2-Bridge, PH/EN, PWM Control interface Hardware (GPIO), SPI Features Current Regulation, Current Sense Amplifier, Smart Gate Drive Rating Automotive TI functional safety category Functional Safety-Capable open-in-new Find other Brushed DC (BDC) motor drivers

Package | Pins | Size

VQFN (RHB) 32 25 mm² 5 x 5 open-in-new Find other Brushed DC (BDC) motor drivers

Features

  • AEC-Q100 Qualified for Automotive Applications
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
  • Functional Safety-Capable
  • Single H-Bridge Gate Driver
    • Drives Four External N-Channel MOSFETs
    • Supports 100% PWM Duty Cycle
  • 5.5 to 45-V Operating Supply-Voltage Range
  • Three Control-Interface Options
    • PH/EN, Independent H-Bridge, and PWM
  • Serial Interface for Configuration (DRV8703-Q1)
  • Smart Gate Drive Architecture
    • Adjustable Slew-Rate Control
  • Independent Control of Each H-Bridge
  • Supports 1.8-V, 3.3-V, and 5-V logic inputs
  • Current-Shunt Amplifier
  • Integrated PWM Current Regulation
  • Low-Power Sleep Mode
  • Protection Features
    • Supply Undervoltage Lockout (UVLO)
    • Charge-Pump Undervoltage (CPUV) Lockout
    • Overcurrent Protection (OCP)
    • Gate-Driver Fault (GDF)
    • Thermal Shutdown (TSD)
    • Watchdog Timer (DRV8703-Q1)
    • Fault-Condition Output (nFAULT)

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Description

The DRV870x-Q1 devices are small single H-bridge gate drivers that use four external N-channel MOSFETs targeted to drive a bidirectional brushed-DC motor.

A PH/EN, independent H-Bridge, or PWM interface allows simple interfacing to controller circuits. An internal sense amplifier provides adjustable current control. Integrated Charge-Pump allows for 100% duty cycle support and can be used to drive external reverse battery switch.

Independent Half Bridge mode allows sharing of half bridges to control multiple DC motors sequentially in a cost-efficient way. The gate driver includes circuitry to regulate the winding current using fixed off-time PWM current chopping.

The DRV870x-Q1 devices include Smart Gate Drive technology to remove the need for any external gate components (resistors and Zener diodes) while protecting the external FETs. The Smart Gate Drive architecture optimizes dead time to avoid any shoot-through conditions, provides flexibility in reducing electromagnetic interference (EMI) with programmable slew-rate control and protects against any gate-short conditions. Additionally, active and passive pulldowns are included to prevent any dv/dt gate turn on.

open-in-new Find other Brushed DC (BDC) motor drivers
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Technical documentation

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Type Title Date
* Data sheet DRV870x-Q1 Automotive H-Bridge Gate Driver datasheet (Rev. E) Nov. 13, 2018
Application note Methods to Configure Current Regulation for Brushed and Stepper Motors (Rev. B) Jan. 19, 2021
Application note Understanding Smart Gate Drive (Rev. D) Nov. 06, 2020
Functional safety information DRV8703-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA May 29, 2020
Application note Detecting Short to Battery and Ground Conditions with TI Motor Gate Drivers May 29, 2020
White paper Smart Gate Drive Jul. 02, 2019
Application note Protecting Automotive Motor Drive Systems from Reverse Polarity Conditions (Rev. A) Feb. 19, 2019
Application note External or internal FETs for motor drive in automotive applications (Rev. A) Feb. 11, 2019
Application note Best Practices for Board Layout of Motor Drivers (Rev. A) Jan. 22, 2019
User guide DRV8703-Q1 EVM User’s Guide (Rev. A) Oct. 11, 2018
Application note Cut-Off Switch in High-Current Motor-Drive Applications (Rev. A) Aug. 20, 2018
Application note Using DRV to Drive Solenoids - DRV8876/DRV8702-Q1/DRV8343-Q1 Feb. 19, 2018
Technical article Why are you still driving automotive motors with relays? Jul. 13, 2017
Technical article The story of motor-drive integration Jan. 09, 2017
Application note Relay Replacement for Brushed DC Motor Drive in Automotive Applications Nov. 14, 2016
Technical article How to create a dynamic power solution for stepper motors, relays and LEDs Nov. 01, 2016
Technical article How to avoid motor and system overvoltage using AVS technology without external components Oct. 14, 2016

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
75
Description
The DRV8703-Q1EVM (evaluation module) serves as an evaluation kit to demonstrade TI's DRV8703-Q1 H-bridge gate driver. An MSP430G2553 is used to control the duty cycle and direction of the motor, while also monitoring the motor current reported from the DRV8703-Q1. The power stage is created using (...)
Features
  • 5.9 V to 45 V Operating Voltage Range
  • 15 A continuous / 20 A peak H-bridge output current
  • Driver a single bidirectional brushed DC motor or two unidirectional brushed DC motors
  • Compact 3.5" x 2.2" form factor
  • User-friendly GUI via MSP430 and USB Interface

Design tools & simulation

SIMULATION MODEL Download
SLVMAR3A.ZIP (90 KB) - PSpice Model

Reference designs

REFERENCE DESIGNS Download
Automotive power seat reference design
TIDA-020008 — This reference design provides the drive and control circuits for motor-driven applications such as automotive power seats, using both bi-directional and unidirectional motor drives. It demonstrates how to drive brushed DC motors with a small board footprint, a high degree of robustness and full (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive Power Trunk Lift Motor Drive Reference Design
TIDA-060009 This design describes how to drive an automotive trunk lift or rear gate lift.

In this design, a brushed BD lift motor and electromagnetic clutch drive mechanisms for a typical gear driven lift. This design includes a warning beeper, LED indicator, and directional control that uses an automotive (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Small-Footprint Sunroof Motor Module Reference Design
TIDA-01389 — The TIDA-01389 is a small-footprint motor control module intended for sunroof and window lift applications. This TI Design uses the DRV8703-Q1 gate driver with an integrated current-shunt amplifier alongside two dual-package automotive-qualified MOSFETs, to create a very small power stage layout (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
VQFN (RHB) 32 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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