Overview
The DRV8350FSRTVR, part of the DRV835xF family, is a highly-integrated 100-V three-phase smart gate driver designed by Texas Instruments. This device is specifically tailored for three-phase brushless DC (BLDC) motor applications. It utilizes a smart gate drive (SGD) architecture to minimize the number of external components required for MOSFET slew rate control and protection circuits. The SGD architecture optimizes dead time to prevent shoot-through conditions, reduces electromagnetic interference (EMI) through adjustable slew rate control, and protects against gate short circuit conditions using VGS monitors. A strong gate pulldown circuit prevents unwanted dV/dt parasitic gate turn-on events.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Power Supply Voltage (VM) | -0.3 | 80 | V | |
| MOSFET Drain Sense Pin Voltage (VDRAIN) | -0.3 | 102 | V | |
| Internal Logic Regulator Voltage (DVDD) | 4.75 | 5 | 5.25 | V |
| Peak Source Gate Current | 50 mA | 1 A | ||
| Peak Sink Gate Current | 100 mA | 2 A | ||
| Gate Drive Dead Time | 50 ns | 400 ns | ||
| Sleep Mode Supply Current | 20 µA | 40 µA | ||
| Operating Temperature Range | -40°C | 125°C | ||
| Package Type | WQFN (32-pin or 40-pin) |
Key Features
- Smart Gate Drive Architecture: Reduces the number of external components needed for MOSFET slew rate control and protection circuits.
- Adjustable Slew Rate Control: For optimizing EMI performance.
- Integrated Protection Features: Includes VM undervoltage lockout (UVLO), gate drive supply undervoltage (GDUV), MOSFET overcurrent protection (OCP), MOSFET shoot-through prevention, gate driver fault (GDF), thermal warning and shutdown (OTW/OTSD), and fault condition indicator (nFAULT).
- Integrated Gate Driver Power Supplies: High-side doubler charge pump and low-side linear regulator.
- Optional Integrated Current Shunt Amplifiers: With adjustable gain (5, 10, 20, 40 V/V) for bidirectional or unidirectional support.
- PWM Control Modes: Supports 6x, 3x, 1x, and independent PWM modes for flexible interfacing with external controllers.
- Low-Power Sleep Mode: Consumes as low as 20 µA at VVM = 48 V.
- SPI or Hardware Interface: Available for control and configuration.
Applications
- Three-Phase BLDC Motor Modules: Ideal for various motor control applications.
- Servo Drives and Factory Automation: Enhances precision and reliability in industrial automation.
- Linear Motor Transport Systems: Suitable for high-precision linear motion control.
- Industrial Collaborative Robots: Ensures safe and efficient operation in collaborative robotics.
- Autonomous Guided Vehicles and Delivery Drones: Supports the control of motors in autonomous systems.
- E-Bikes, E-Scooters, and E-Mobility: Optimizes motor control in electric vehicles.
Q & A
- What is the DRV8350FSRTVR used for?
The DRV8350FSRTVR is a 100-V three-phase smart gate driver used for controlling three-phase brushless DC (BLDC) motors.
- What is the smart gate drive (SGD) architecture?
The SGD architecture reduces the number of external components needed for MOSFET slew rate control and protection circuits, optimizing dead time and reducing EMI.
- What are the integrated protection features of the DRV8350FSRTVR?
The device includes VM undervoltage lockout, gate drive supply undervoltage, MOSFET overcurrent protection, MOSFET shoot-through prevention, gate driver fault, thermal warning and shutdown, and a fault condition indicator.
- What PWM control modes are supported by the DRV8350FSRTVR?
The device supports 6x, 3x, 1x, and independent PWM modes.
- What is the operating voltage range of the DRV8350FSRTVR?
The device operates within a voltage range of 9 to 100 V.
- What is the peak source and sink gate current of the DRV8350FSRTVR?
The peak source gate current is 50 mA to 1 A, and the peak sink gate current is 100 mA to 2 A.
- Does the DRV8350FSRTVR support SPI or hardware interface?
Yes, it supports both SPI and hardware interfaces for control and configuration.
- What is the sleep mode current consumption of the DRV8350FSRTVR?
The device consumes as low as 20 µA in sleep mode at VVM = 48 V.
- What are the package options for the DRV8350FSRTVR?
The device is available in 32-pin and 40-pin WQFN packages.
- What are some common applications of the DRV8350FSRTVR?
Common applications include three-phase BLDC motor modules, servo drives, factory automation, linear motor transport systems, industrial collaborative robots, autonomous guided vehicles, and e-mobility solutions.
