DRV8718 Series
Automotive 40-V, 8-channel half-bridge smart gate driver with inline current sense amplifier
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Automotive 40-V, 8-channel half-bridge smart gate driver with inline current sense amplifier
| Part | Load Type | Interface | Technology | Voltage - Supply [Min] | Voltage - Supply [Max] | Operating Temperature [Max] | Operating Temperature [Min] | Applications | Fault Protection | Rds On (Typ) | Features | Qualification | Current - Output / Channel | Grade | Voltage - Load [Max] | Voltage - Load [Min] | Mounting Type | Package / Case | Supplier Device Package | Supplier Device Package [y] | Supplier Device Package [x] | Secondary Attributes | Function | Utilized IC / Part | Type | Supplied Contents |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments DRV8718SQRVJRQ1 | Capacitive and Resistive | Logic, PWM, SPI | Power MOSFET | 3 V | 5.5 V | 150 C | -40 °C | DC Motors, General Purpose | Over Current, Over Voltage, Shoot-Through | 4 mOhm | Charge Pump | AEC-Q100 | 62 mA | Automotive | 5.5 V | 3 V | Surface Mount, Wettable Flank | 56-VFQFN Exposed Pad | 56-VQFN | 8 | 8 | |||||
Texas Instruments DRV8718S-Q1EVM | Graphical User Interface (GUI) | Gate Driver | DRV8718S-Q1 | Power Management | Board(s) |
Key Features
• AEC-Q100 qualified for automotive applications:Temperature grade 1: –40°C to +125°C, TAMulti-channel half-bridge gate driversPin to pin 4 and 8 half-bridge driver variants4.9V to 37V (40V abs. max) operating range4 PWM inputs with output mappingTripler charge pump for 100% PWMHalf-bridge, H-bridge, and SPI control modesSmart multi-stage gate drive architectureAdjustable slew rate controlAdaptive propagation delay control50µA to 62mA peak source current output50µA to 62mA peak sink current outputIntegrated dead-time handshaking2x wide common mode current shunt amplifiersSupports inline, high-side, or low-sideAdjustable gain settings (10, 20, 40, 80V/V)Multiple interface options availableSPI: Detailed configuration and diagnosticsH/W: Simplified control and less MCU pinsCompact VQFN packages with wettable flanksIntegrated protection featuresDedicated driver disable pin (DRVOFF)Low IQ, sleep mode motor braking (BRAKE)Supply and regulator voltage monitorsMOSFET VDS overcurrent monitorsMOSFET VGS gate fault monitorsCharge pump for reverse polarity MOSFETOffline open load and short circuit diagnosticsDevice thermal warning and shutdownWindow watchdog timerFault condition interrupt pin (nFAULT)AEC-Q100 qualified for automotive applications:Temperature grade 1: –40°C to +125°C, TAMulti-channel half-bridge gate driversPin to pin 4 and 8 half-bridge driver variants4.9V to 37V (40V abs. max) operating range4 PWM inputs with output mappingTripler charge pump for 100% PWMHalf-bridge, H-bridge, and SPI control modesSmart multi-stage gate drive architectureAdjustable slew rate controlAdaptive propagation delay control50µA to 62mA peak source current output50µA to 62mA peak sink current outputIntegrated dead-time handshaking2x wide common mode current shunt amplifiersSupports inline, high-side, or low-sideAdjustable gain settings (10, 20, 40, 80V/V)Multiple interface options availableSPI: Detailed configuration and diagnosticsH/W: Simplified control and less MCU pinsCompact VQFN packages with wettable flanksIntegrated protection featuresDedicated driver disable pin (DRVOFF)Low IQ, sleep mode motor braking (BRAKE)Supply and regulator voltage monitorsMOSFET VDS overcurrent monitorsMOSFET VGS gate fault monitorsCharge pump for reverse polarity MOSFETOffline open load and short circuit diagnosticsDevice thermal warning and shutdownWindow watchdog timerFault condition interrupt pin (nFAULT)
Description
AI
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 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 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.
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 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 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.