DRV8714-Q1, DRV8718-Q1
SLVSEA2B – AUGUST 2020 – REVISED JUNE 2021
DRV871x-Q1 Automotive Multi-Channel Smart Half-Bridge Gate Drivers
With Wide Common Mode Inline Current Sense Amplifiers
1 Features
3 Description
•
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
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.
•
– 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
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.
– Charge pump for reverse polarity MOSFET
– Offline open load and short circuit diagnostics
– Device thermal warning and shutdown
– Window watchdog timer.
Device Information(1)
PART NUMBER
DRV8714-Q1
PACKAGE
BODY SIZE (NOM)
6.00 mm x 6.00 mm
8.00 mm x 8.00 mm
8.00 mm x 8.00 mm
VQFN (40)
– Fault condition interrupt pin (nFAULT)
VQFN (56)
VQFN (56)
DRV8718-Q1
2 Applications
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
•
•
•
•
•
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Automotive brushed DC motors
Power seat modules
Power trunk and lift gate
Door module
Body control modules
Power sunroof
VBAT
DRV871x-Q1
PWM
4-Channel
8-Channel
SPI
Transmission and engine control modules
DRVOFF/nFLT
Current Sense
Multi-Channel
Smart Gate Driver
Inline Amps
Protection
Simple Block Diagram
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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