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.
DRV8718SQRVJRQ1 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.
DRV8718SQRVJRQ1'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
Technology Highlights Of DRV8718SQRVJRQ1
Smart Gate Drive Architecture
The DRV8718SQRVJRQ1 features intelligent gate drive technology that optimises dead time, avoids breakdowns and reduces electromagnetic interference (EMI) with adjustable slew rate control. Its built-in current-sense amplifier supports both low-side and high-side sense configurations, providing higher precision for motor control.
Multiple Protection Functions
The DRV8718SQRVJRQ1 driver integrates multiple protection mechanisms, including supply voltage monitoring, over-temperature protection, and MOSFET source-drain voltage monitoring, to ensure safe operation of the system even under abnormal conditions. In addition, its offline diagnostic function can detect open load and short circuit faults in real time, further enhancing system reliability.
Flexible Interface and Control
The DRV8718SQRVJRQ1 supports SPI interface and hardware control mode, allowing users to choose the appropriate control method according to their needs. Its multiplexed PWM input function enables the driver to flexibly respond to different application scenarios.
Wide Voltage Range
The DRV8718SQRVJRQ1 operates from 4.9V to 37V with a maximum withstand voltage of 40V, making it suitable for a wide range of automotive power supply environments.
Integrated protection features
The DRV8718SQRVJRQ1 including under/over voltage monitoring, MOSFET VDS overcurrent and VGS gate fault monitoring, offline open load and short circuit diagnostics to ensure reliable system operation.
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:
Body Control Module: such as power seats, power sunroofs, door control, etc. Precise control is achieved through multi-channel drive.
Powertrain: DRV8718SQRVJRQ1 for driving brushed DC motors to support applications such as electric tailgate and liftgate.
Transmission and engine control: Optimise motor performance through intelligent gate drive architecture to improve system efficiency and reliability.
Other automotive electronic systems: such as windscreen wipers, fuel pumps, etc. to meet diversified needs.
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.
Simple Block Diagram Of DRV8718SQRVJRQ1
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