Overview
The DRV8718SQRVJRQ1 is a highly integrated, multi-channel gate driver produced by Texas Instruments. It is part of the DRV871x-Q1 family, designed for driving multiple motors or loads in automotive applications. This device integrates 8 half-bridge gate drivers, driver power supplies, current shunt amplifiers, and various protection monitors, thereby reducing system complexity, size, and cost. The DRV8718SQRVJRQ1 features a smart gate drive architecture that manages dead time to prevent shoot-through, controls slew rate to decrease electromagnetic interference (EMI), and optimizes propagation delay for enhanced performance.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | VQFN (RVJ) 56-pin |
| Body Size | 8.00mm x 8.00mm |
| Number of Half-Bridge Drivers | 8 |
| Operating Temperature Range | -40°C to +125°C |
| Supply Voltage Range | Up to 40V |
| Current Sense Amplifier | Wide common mode shunt amplifiers |
| Interface | Serial (SPI) |
| Protection Features | Under and overvoltage monitors, VDS overcurrent and VGS gate fault monitors, offline open load and short circuit diagnostics, internal thermal warning and shutdown protection |
Key Features
- Smart gate drive architecture to manage dead time, control slew rate, and optimize propagation delay.
- Integrated current sensing capability with wide common mode shunt amplifiers for inline current sensing.
- Programmable over-current protection options and dual PAR; enable and microstep resolutions.
- Pre-driver outputs to interface with motor driver ICs on the system board, PWM outputs for speed or torque control, and diagnostic outputs for thermal overload protection.
- Input modes for independent half-bridge or H-bridge control, with four PWM inputs that can be multiplexed between the different drivers in combination with SPI control.
- Dedicated driver disable pin (DRVOFF), low IQ sleep mode motor braking, and supply and regulator voltage monitors.
- Charge pump for reverse polarity MOSFET, offline open load and short circuit diagnostics, device thermal warning and shutdown, and fault condition interrupt pin (nFAULT).
Applications
- Automotive brushed DC motors
- Power seat modules
- Power trunk and lift gate
- Door module
- Body control modules
- Power sunroof
- Transmission and engine control modules
- Vehicle HVAC, electronic mirrors, seat adjust motors, and window lift motors.
Q & A
- What is the DRV8718SQRVJRQ1 used for?
The DRV8718SQRVJRQ1 is used for driving multiple motors or loads in automotive applications, integrating 8 half-bridge gate drivers, driver power supplies, current shunt amplifiers, and protection monitors.
- What is the package type and size of the DRV8718SQRVJRQ1?
The DRV8718SQRVJRQ1 comes in a VQFN (RVJ) 56-pin package with a body size of 8.00mm x 8.00mm.
- What are the key features of the DRV8718SQRVJRQ1's smart gate drive architecture?
The 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).
- Does the DRV8718SQRVJRQ1 support inline current sensing?
Yes, the DRV8718SQRVJRQ1 includes wide common mode shunt amplifiers for inline current sensing, which can continuously measure motor current even during recirculating windows).
- What protection features are included in the DRV8718SQRVJRQ1?
The device includes under and overvoltage monitors, VDS overcurrent and VGS gate fault monitors, offline open load and short circuit diagnostics, and internal thermal warning and shutdown protection).
- What are the typical applications of the DRV8718SQRVJRQ1 in the automotive sector?
Typical applications include automotive brushed DC motors, power seat modules, power trunk and lift gate, door module, body control modules, power sunroof, transmission and engine control modules, and vehicle HVAC, electronic mirrors, seat adjust motors, and window lift motors).
- How does the DRV8718SQRVJRQ1 handle input modes for motor control?
The device provides input modes for independent half-bridge or H-bridge control, with four PWM inputs that can be multiplexed between the different drivers in combination with SPI control).
- What is the operating temperature range of the DRV8718SQRVJRQ1?
The operating temperature range is -40°C to +125°C).
- Does the DRV8718SQRVJRQ1 support sleep mode and low IQ motor braking?
Yes, the device supports low IQ sleep mode motor braking).
- How does the DRV8718SQRVJRQ1 handle fault conditions?
The device includes a fault condition interrupt pin (nFAULT) and various protection features such as VDS overcurrent and VGS gate fault monitors, offline open load and short circuit diagnostics, and internal thermal warning and shutdown protection).
