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TI DRV8718SQRVJRQ1 40V 8-Channel Automotive Half Bridge Smart Gate Driver With Inline Current Sense Amplifier

With the development of automotive electronic systems in the direction of intelligence and high integration, the demand for multi-channel smart gate drivers is growing. As a world-renowned distributor of electronic components, Shenzhen Mingjiada Electronics Co., Ltd. has been supplying TI's DRV8718SQRVJRQ1 40V 8-channel automotive-grade half-bridge smart gate drivers for a long time, providing efficient solutions for new energy vehicles, motor control and industrial automation.

Description Of DRV8718SQRVJRQ1

DRV8718SQRVJRQ1 devices is highly integrated, multi-channel gate drivers intended for driving multiple motors or loads. The DRV8718SQRVJRQ1 devices integrate either 8 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 enhanced 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 DRV8718SQRVJRQ1 devices provide an array of protection features to promote 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.

Specifications Of DRV8718SQRVJRQ1

Product: Brushed DC Motor Drivers

Type: Half Bridge

Output Current: 5 mA

Operating Supply Current: 8 mA

Minimum Operating Temperature: - 40 C

Maximum Operating Temperature: + 125 C

Package/Case: VQFN-56

Load Voltage Rating: 4.9 V to 37 V

Moisture Sensitive: Yes

Number of Outputs: 8 Output

Operating Frequency: 400 kHz

Supply Voltage - Max: 37 V

Supply Voltage - Min: 4.9 V

The DRV8718SQRVJRQ1 is a highly integrated device in TI's DRV871x-Q1 family, designed for automotive and industrial applications with the following core 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

4.9V to 37V (40V 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

50µA to 62mA peak source current output

50µA to 62mA 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, 80V/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)

With its high performance and reliability, the DRV8718SQRVJRQ1 can be widely used in:

New energy vehicles: drive motor control, battery management system (BMS)

Industrial automation: servo motors, robotic arms and high-precision motion control

Intelligent driving: electric power steering (EPS), on-board pump and valve control.

The DRV8718SQRVJRQ1 devices help customers reduce development cycles and improve energy efficiency by reducing external component count and system size, especially for space- and cost-sensitive automotive electronics designs.