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DRV8714-Q1

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Automotive 32-V, 4 channel half-bridge smart gate driver with inline current sense amplifier

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Product details

Parameters

Number of full bridges 2 Vs (Min) (V) 4.9 Vs (Max) (V) 37 Sleep current (uA) 5 Control mode Independent 1/2-Bridge, PH/EN, PWM Control interface Hardware (GPIO), SPI Features Inline Current Sense Amplifier, Open-Load Detection, Smart Gate Drive Rating Automotive open-in-new Find other Brushed DC (BDC) motor drivers

Package | Pins | Size

VQFN (RVJ) 56 open-in-new Find other Brushed DC (BDC) motor drivers

Features

  • 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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Description

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.

open-in-new Find other Brushed DC (BDC) motor drivers
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Preproduction samples are available (PDRV8714SRVJQ1). Request now

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Same functionality and pinout but is not an equivalent to the compared device:
NEW DRV8718-Q1 ACTIVE Automotive 32-V, 8 channel half-bridge smart gate driver with inline current sense amplifier 8x half-bridge channel variant that is pin-to-pin and software compatible
Similar but not functionally equivalent to the compared device:
DRV8705-Q1 PREVIEW Automotive, 40-V, H-bridge Smart Gate Driver w/offline diagnostics H-bridge gate driver with 1x low-side current sense amplifier
DRV8706-Q1 PREVIEW Automotive, 40-V, H-bridge Smart Gate Driver w/offline diagnostics and inline current sense amplifer H-bridge gate driver with 1x inline current sense amplifier

Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet DRV871x-Q1 Automotive Multi-Channel Smart Half-Bridge Gate Drivers With Wide Common Mode Inline Current Sense Amplifiers datasheet (Rev. A) Dec. 28, 2020
White paper Driving High-Voltage Contactors in EV and HEVs Feb. 05, 2021
Application note Integrated Protection Against Back EMF Overvoltage in Motor Drive Systems (Rev. A) Feb. 04, 2021
Technical articles How analog integration simplifies automotive body motor controller designs Oct. 23, 2020
Application note Benefits of a Wide Common Mode, Differential Current Shunt Amplifier Sep. 08, 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 Understanding Smart Gate Drive (Rev. C) Nov. 27, 2018
Application note Cut-Off Switch in High-Current Motor-Drive Applications (Rev. A) Aug. 20, 2018
Application note Daisy Chain Implementation for Serial Peripheral Interface Aug. 09, 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
Application note 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

Design & development

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Hardware development

EVALUATION BOARD Download
document-generic User guide
149
Description

The DRV8714S-Q1 evaluation module (EVM) allows easy evaluation of the DRV8714S-Q1 device.

The DRV8714S-Q1 is 4-channel Gate Driver with inline current sensing and offline diagnostics. The DRV8714S-Q1 devices can be powered with a supply voltage from 4.9 to 37 V. A smart gate drive architecture (...)

Features
  • 4.9-V to 37-V operating voltage range
  • 4 channel smart multi-stage gate driver
  • 4 PWM inputs with output mapping
  • 2x wide common mode current shunt amplifiers
  • SPI and H/W Multiple interface options available

CAD/CAE symbols

Package Pins Download
VQFN (RHA) 40 View options
VQFN (RVJ) 56 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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