Overview
The DRV8350HRTVR, produced by Texas Instruments, is a highly-integrated gate driver designed for three-phase brushless DC (BLDC) motor applications. This device is part of the DRV835x family, which supports various motor control schemes including field-oriented control (FOC), sinusoidal current control, and trapezoidal current control. The DRV8350HRTVR features a smart gate drive (SGD) architecture that minimizes the need for external components typically required for MOSFET slew rate control and protection circuits. It also includes optional integrated current shunt amplifiers and a buck regulator to power the gate driver or an external controller.
Key Specifications
| Parameter | Specification |
|---|---|
| Operating Voltage Range | 6 to 95 V |
| Output Capability | 2.5 to 75 V, 350 mA |
| Peak Source Current | 50 mA to 1 A |
| Peak Sink Current | 100 mA to 2 A |
| Package Type | WQFN (32 pins) |
| Package Size | 5.00 mm × 5.00 mm |
| Operating Temperature Range | -40°C to 125°C |
| PWM Modes | 6x, 3x, 1x, and independent |
| Interface | SPI or hardware interface available |
| Low-Power Sleep Mode | 20 µA at VVM = 48 V |
Key Features
- Triple half-bridge gate driver with optional integrated buck regulator and triple low-side current shunt amplifiers
- Smart gate drive architecture with adjustable slew rate control for EMI performance and VGS handshake to prevent shoot-through
- dV/dt mitigation through strong pulldown to prevent unwanted gate turn-on events
- Integrated gate driver power supplies, including high-side doubler charge pump and low-side linear regulator
- Integrated LM5008A buck regulator
- Adjustable gain (5, 10, 20, 40 V/V) for current shunt amplifiers
- Bidirectional or unidirectional support
- Supports 120° sensored operation
- Integrated protection features including VM undervoltage lockout (UVLO), gate drive supply undervoltage (GDUV), MOSFET overcurrent protection (OCP), and thermal warning and shutdown (OTW/OTSD)
Applications
The DRV8350HRTVR is designed for various three-phase BLDC motor control applications, including:
- Field-oriented control (FOC)
- Sinusoidal current control
- Trapezoidal current control
- Sensored and sensorless motor control
These applications are common in industrial automation, robotics, and automotive systems where high-efficiency and reliable motor control are crucial.
Q & A
- What is the operating voltage range of the DRV8350HRTVR?
The operating voltage range is 6 to 95 V.
- What are the peak source and sink currents of the DRV8350HRTVR?
The peak source current is 50 mA to 1 A, and the peak sink current is 100 mA to 2 A.
- What types of PWM modes are supported by the DRV8350HRTVR?
The device supports 6x, 3x, 1x, and independent PWM modes.
- Does the DRV8350HRTVR have integrated protection features?
Yes, it includes features such as VM undervoltage lockout (UVLO), gate drive supply undervoltage (GDUV), MOSFET overcurrent protection (OCP), and thermal warning and shutdown (OTW/OTSD).
- What is the purpose of the smart gate drive architecture in the DRV8350HRTVR?
The smart gate drive architecture minimizes the need for external components, optimizes dead time to prevent shoot-through, and provides flexibility in decreasing electromagnetic interference (EMI) through MOSFET slew rate control.
- How does the DRV8350HRTVR mitigate dV/dt parasitic gate turn-on events?
The device uses a strong gate pulldown circuit to mitigate dV/dt parasitic gate turn-on events.
- What is the low-power sleep mode current consumption of the DRV8350HRTVR?
The device consumes 20 µA at VVM = 48 V in low-power sleep mode.
- Does the DRV8350HRTVR support SPI or hardware interface?
Yes, the device supports both SPI and hardware interfaces.
- What is the package type and size of the DRV8350HRTVR?
The package type is WQFN with 32 pins, and the package size is 5.00 mm × 5.00 mm.
- What are the operating temperature ranges for the DRV8350HRTVR?
The operating temperature range is -40°C to 125°C.
