AEC-Q100 Qualified for Automotive Applications
- Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
Single Half-Bridge Gate Driver
- Drives Two External N-Channel MOSFETs
- Supports 100% PWM Duty Cycle
5.5 to 45-V Operating Supply-Voltage Range
PWM Control Interface
Serial Interface for Configuration (DRV8703D-Q1)
Smart Gate Drive Architecture
- Adjustable Slew-Rate Control
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 (DRV8703D-Q1)
- Fault-Condition Output (nFAULT)

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Description

The DRV870xD-Q1 devices are small half bridge gate drivers that use two external N-channel MOSFETs targeted to drive unidirectional brushed-DC motors or solenoid loads.

A 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 DRV870xD-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.

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Find other Brushed DC (BDC) motor drivers

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NEW DRV8106-Q1

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37V, automotive half-bridge smart gate driver with inline current sense amplifier Improved diagnostics and specs along with more configurability. Inline current sensing allows 100% current sensing and enables support for ripple counting.

Technical documentation

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	Type	Title	Date
*	Datasheet	DRV870xD-Q1 Automotive Half-Bridge Gate Driver datasheet (Rev. B)	Sep. 20, 2018
	Application notes	Detecting Short to Battery and Ground Conditions with TI Motor Gate Drivers	May 29, 2020
	White papers	Smart Gate Drive	Jul. 02, 2019
	Application notes	Protecting Automotive Motor Drive Systems from Reverse Polarity Conditions (Rev. A)	Feb. 19, 2019
	Application notes	External or internal FETs for motor drive in automotive applications (Rev. A)	Feb. 11, 2019
	Application notes	Best Practices for Board Layout of Motor Drivers (Rev. A)	Jan. 22, 2019
	Application notes	Understanding Smart Gate Drive (Rev. C)	Nov. 27, 2018
	Application notes	Using DRV to Drive Solenoids - DRV8876/DRV8702-Q1/DRV8343-Q1	Feb. 19, 2018
	Technical articles	Why are you still driving automotive motors with relays?	Jul. 13, 2017
	User guides	DRV8703D-Q1 EVM User’s Guide	Mar. 22, 2017
	Technical articles	The story of motor-drive integration	Jan. 09, 2017
	Application notes	Relay Replacement for Brushed DC Motor Drive in Automotive Applications	Nov. 14, 2016
	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

Design & development

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Hardware development

EVALUATION BOARDS Download

DRV8703D-Q1 Automotive Half-Bridge Brushed DC Motor Gate Driver With SPI Evaluation Module

DRV8703D-Q1EVM

document-generic

User guide

75

Description

The DRV8703D-Q1EVM (evaluation module) serves as an evaluation kit to demonstrate TI's DRV8703D-Q1 Half-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 DRV8703D-Q1. The power stage is created (...)

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

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