DESCRIPTION：

The DRV871x-Q1 family of devices is a highly integrated multi-channel gate driver designed to drive multiple motors or loads. The device integrates 4 (DRV8714-Q1) or 8 (DRV8718-Q1) half-bridge gate drivers, driver power supply, current shunt amplifiers, and protection monitors to reduce overall system complexity, cost, and size. The smart gate drive architecture manages dead time to prevent shoot-through, controls slew rate to reduce electromagnetic interference (EMI), and optimizes propagation delay to enhance performance.

The provided input modes enable independent half-bridge or H-bridge control. Four PWM inputs can be multiplexed across different drivers with SPI control. The wide common-mode shunt amplifier features in-line current sensing, enabling continuous motor current measurement even during recirculation. If in-line sensing is not required, the amplifier can be configured for low-side or high-side sensing.

These devices offer a range of protection features to promote robust system operation. Such features include undervoltage and overvoltage monitoring, VDS overcurrent and VGS gate fault monitoring for external MOSFETs, off-line open-load and short-circuit diagnostics, as well as internal thermal warning and thermal shutdown protection.

FEATURES：

• AEC-Q100 Qualified for Automotive Applications:

– Temperature Grade 1: –40°C to +125°C, TA

• Multi-Channel Half-Bridge Gate Driver

– 4 and 8 half-bridge driver models (pin-to-pin)

– 4.9V to 37V (40V absolute maximum) operating voltage range

– 4 PWM inputs with output mapping

– Triple charge pump enables 100% PWM

– Half-bridge, H-bridge, and SPI control modes

• Smart Multi-Level Gate Drive Architecture

– Adjustable slew rate control

– Adaptive propagation delay control

– 50µA to 62mA peak source current output

– 50µA to 62mA peak sink current output

– Integrated dead-time handshake

• 2 Current Shunt Amplifiers with Wide Common-Mode Voltage Range

– Supports in-line, high-side, or low-side sensing

– Adjustable gain settings (10, 20, 40, 80 V/V)

• Multiple Interface Options

– SPI: Detailed configuration and diagnostics

– H/W: Simplified control and fewer MCU pins

• Compact VQFN Package with Wettable Flanks

• Integrated Protection Features

– Dedicated driver disable pin (DRVOFF)

– Low IQ, sleep mode motor braking (BRAKE)

– Power supply and regulator voltage monitors

– MOSFET VDS overcurrent monitor

– MOSFET VGS gate fault monitor

– Charge pump for reverse polarity MOSFET

– Off-line open-load and short-circuit diagnostics

– Device thermal warning and thermal shutdown

– Window watchdog timer

– Fault condition interrupt pin (nFAULT)

APPLICATIONS：

• Automotive Brushed DC Motors

• Power Seat Modules

• Power Liftgate and Trunk Systems

• Door Modules

• Body Control Modules

• Power Sunroof

• Transmission and Engine Control Modules