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DRV8718-Q1

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Automotive 40-V, 8-channel half-bridge smart gate driver with inline current sense amplifier

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Data sheet
Automotive 40-V, 8-channel half-bridge smart gate driver with inline current sense amplifier

DRV8718-Q1

ACTIVE
Data sheet Order now

Product details

Number of full bridges 4 Vs (Min) (V) 4.9 Vs ABS (Max) (V) 40 Sleep current (uA) 5 Control mode Independent 1/2-Bridge, PH/EN, PWM Control interface SPI Features Inline Current Sense Amplifier, Open-Load Detection, Smart Gate Drive Rating Automotive Operating temperature range (C) -40 to 125
Number of full bridges 4 Vs (Min) (V) 4.9 Vs ABS (Max) (V) 40 Sleep current (uA) 5 Control mode Independent 1/2-Bridge, PH/EN, PWM Control interface SPI Features Inline Current Sense Amplifier, Open-Load Detection, Smart Gate Drive Rating Automotive Operating temperature range (C) -40 to 125
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VQFN (RVJ) 56 64 mm² 8 x 8
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  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Multi-channel half-bridge gate drivers
    • Pin to pin 4 and 8 half-bridge driver variants
    • 4.9-V to 37-V (40-V abs. max) operating range
    • 4 PWM inputs with output mapping
    • Tripler charge pump for 100% PWM
    • Half-bridge, H-bridge, and SPI control modes
  • Smart multi-stage gate drive architecture
    • Adjustable slew rate control
    • Adaptive propagation delay control
    • 50-µA to 62-mA peak source current output
    • 50-µA to 62-mA peak sink current output
    • Integrated dead-time handshaking
  • 2x wide common mode current shunt amplifiers
    • Supports inline, high-side, or low-side
    • Adjustable gain settings (10, 20, 40, 80 V/V)
  • Multiple interface options available
    • SPI: Detailed configuration and diagnostics
    • H/W: Simplified control and less MCU pins
  • Compact VQFN packages with wettable flanks
  • Integrated protection features
    • Dedicated driver disable pin (DRVOFF)
    • Low IQ, sleep mode motor braking (BRAKE)
    • Supply and regulator voltage monitors
    • MOSFET VDS overcurrent monitors
    • MOSFET VGS gate fault monitors
    • Charge pump for reverse polarity MOSFET
    • Offline open load and short circuit diagnostics
    • Device thermal warning and shutdown
    • Window watchdog timer.
    • Fault condition interrupt pin (nFAULT)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Multi-channel half-bridge gate drivers
    • Pin to pin 4 and 8 half-bridge driver variants
    • 4.9-V to 37-V (40-V abs. max) operating range
    • 4 PWM inputs with output mapping
    • Tripler charge pump for 100% PWM
    • Half-bridge, H-bridge, and SPI control modes
  • Smart multi-stage gate drive architecture
    • Adjustable slew rate control
    • Adaptive propagation delay control
    • 50-µA to 62-mA peak source current output
    • 50-µA to 62-mA peak sink current output
    • Integrated dead-time handshaking
  • 2x wide common mode current shunt amplifiers
    • Supports inline, high-side, or low-side
    • Adjustable gain settings (10, 20, 40, 80 V/V)
  • Multiple interface options available
    • SPI: Detailed configuration and diagnostics
    • H/W: Simplified control and less MCU pins
  • Compact VQFN packages with wettable flanks
  • Integrated protection features
    • Dedicated driver disable pin (DRVOFF)
    • Low IQ, sleep mode motor braking (BRAKE)
    • Supply and regulator voltage monitors
    • MOSFET VDS overcurrent monitors
    • MOSFET VGS gate fault monitors
    • Charge pump for reverse polarity MOSFET
    • Offline open load and short circuit diagnostics
    • Device thermal warning and shutdown
    • Window watchdog timer.
    • Fault condition interrupt pin (nFAULT)
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The DRV871x-Q1 family of devices are highly integrated, multi-channel gate drivers intended for driving multiple motors or loads. The devices integrate either 4 (DRV8714-Q1) or 8 (DRV8718-Q1) half-bridge gate drivers, driver power supplies, current shunt amplifiers, and protection monitors reducing total system complexity, size, and cost.

A smart gate drive architecture manages dead time to prevent shoot-through, controls slew rate to decrease electromagnetic interference (EMI), and optimizes propagation delay for optimal performance.

Input modes are provided for independent half-bridge or H-bridge control. Four PWM inputs can be multiplexed between the different drivers in combination with SPI control.

Wide common mode shunt amplifiers provide inline current sensing to continuously measure motor current even during recirculating windows. The amplifier can be used in low-side or high-side sense configurations if inline sensing is not required.

The devices provide an array of protection features to ensure robust system operation. These include under and overvoltage monitors, VDS overcurrent and VGS gate fault monitors for the external MOSFETs, offline open load and short circuit diagnostics, and internal thermal warning and shutdown protection.

The DRV871x-Q1 family of devices are highly integrated, multi-channel gate drivers intended for driving multiple motors or loads. The devices integrate either 4 (DRV8714-Q1) or 8 (DRV8718-Q1) half-bridge gate drivers, driver power supplies, current shunt amplifiers, and protection monitors reducing total system complexity, size, and cost.

A smart gate drive architecture manages dead time to prevent shoot-through, controls slew rate to decrease electromagnetic interference (EMI), and optimizes propagation delay for optimal performance.

Input modes are provided for independent half-bridge or H-bridge control. Four PWM inputs can be multiplexed between the different drivers in combination with SPI control.

Wide common mode shunt amplifiers provide inline current sensing to continuously measure motor current even during recirculating windows. The amplifier can be used in low-side or high-side sense configurations if inline sensing is not required.

The devices provide an array of protection features to ensure robust system operation. These include under and overvoltage monitors, VDS overcurrent and VGS gate fault monitors for the external MOSFETs, offline open load and short circuit diagnostics, and internal thermal warning and shutdown protection.

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Technical documentation

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Type Title Date
* Data sheet DRV871x-Q1 Automotive Multi-Channel Smart Half-Bridge Gate Drivers With Wide Common Mode Inline Current Sense Amplifiers datasheet (Rev. B) 05 Jun 2021
More literature TI Motor Drives Automotive Body Motors Webinar 02 Jul 2021
Application note Daisy Chain Implementation for Serial Peripheral Interface (Rev. A) 07 Apr 2021
Application note Understanding Smart Gate Drive (Rev. D) 01 Mar 2021
Application note Integrated Protection Against Back EMF Overvoltage in Motor Drive Systems (Rev. A) 04 Feb 2021
Technical article How analog integration simplifies automotive body motor controller designs 23 Oct 2020
Application note Benefits of a Wide Common Mode, Differential Current Shunt Amplifier 08 Sep 2020
White paper Smart Gate Drive 02 Jul 2019
Application note Protecting Automotive Motor Drive Systems from Reverse Polarity Conditions (Rev. A) 19 Feb 2019
Application note External or internal FETs for motor drive in automotive applications (Rev. A) 11 Feb 2019
Application note Cut-Off Switch in High-Current Motor-Drive Applications (Rev. A) 20 Aug 2018
Technical article Why are you still driving automotive motors with relays? 13 Jul 2017
Technical article The story of motor-drive integration 09 Jan 2017
Application note Relay Replacement for Brushed DC Motor Drive in Automotive Applications 14 Nov 2016
Technical article How to create a dynamic power solution for stepper motors, relays and LEDs 01 Nov 2016

Design & development

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

Evaluation board

DRV8718S-Q1EVM — Automotive multi-channel smart half-bridge gate drivers evaluation module

The DRV8718S-Q1 evaluation module (EVM) allows easy evaluation of the DRV8718S-Q1 device.

The DRV8718S-Q1 is 8-channel Gate Driver with inline current sensing and offline diagnostics. The DRV8718S-Q1 devices can be powered with a supply voltage from 4.9 to 37 V. A smart gate drive architecture (...)

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