Overview
The DRV8350FHRTVR, produced by Texas Instruments, is a highly integrated 100-V max 3-phase smart gate driver designed for three-phase brushless DC (BLDC) motor applications. This device is part of the DRV835xF family, which features a smart gate drive (SGD) architecture to minimize the number of external components required for MOSFET slew rate control and protection circuits. The DRV8350FHRTVR is Functional Safety Quality-Managed, providing documentation to aid in IEC 61800-5-2 functional safety system design. It includes integrated gate driver power supplies, adjustable slew rate control for EMI performance, and various protection features such as MOSFET overcurrent protection and thermal warning/shutdown.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Power Supply Pin Voltage (VM) | -0.3 | - | 80 | V |
| MOSFET Drain Sense Pin Voltage (VDRAIN) | -0.3 | - | 102 | V |
| Peak Source Gate Current | 50 mA | - | 1 A | - |
| Peak Sink Gate Current | 100 mA | - | 2 A | - |
| VM Operating Supply Current | 8.5 mA | 13 mA | - | - |
| Sleep Mode Supply Current | 20 µA | - | 40 µA | - |
| Gate Drive Dead Time | 50 ns | - | 400 ns | - |
| Package Type | - | - | WQFN (32-pin) | - |
Key Features
- Smart gate drive (SGD) architecture to reduce external component count and optimize dead time to prevent shoot-through conditions.
- Adjustable slew rate control for EMI performance and dV/dt mitigation through strong pulldown.
- Integrated gate driver power supplies, including high-side doubler charge pump and low-side linear regulator.
- Optional integrated triple current shunt amplifiers with adjustable gain (5, 10, 20, 40 V/V).
- Support for various PWM control modes (6x, 3x, 1x, and independent) and 120° sensored operation.
- SPI or hardware interface available.
- Low-power sleep mode (20 µA at VVM = 48 V).
- Integrated protection features including VM undervoltage lockout, gate drive supply undervoltage, MOSFET overcurrent protection, and thermal warning/shutdown.
Applications
- Three-phase brushless DC (BLDC) motor control in industrial, automotive, and robotics applications.
- Motor control in humanoid robots and other advanced robotic systems.
- High-power motor driver applications requiring functional safety and high reliability.
- Sensored trapezoidal control of BLDC motors using internal block commutation tables.
Q & A
- What is the maximum voltage rating for the DRV8350FHRTVR?
The DRV8350FHRTVR has a maximum voltage rating of 100 V for the power supply pin (VM) and 102 V for the MOSFET drain sense pin (VDRAIN).
- What types of PWM control modes are supported by the DRV8350FHRTVR?
The device supports various PWM control modes including 6x, 3x, 1x, and independent modes to simplify interfacing with external controllers.
- Does the DRV8350FHRTVR have integrated protection features?
Yes, it includes integrated protection features such as VM undervoltage lockout, gate drive supply undervoltage, MOSFET overcurrent protection, and thermal warning/shutdown.
- How does the DRV8350FHRTVR manage EMI?
The device features adjustable slew rate control to manage electromagnetic interference (EMI) and includes a strong gate pulldown circuit to prevent unwanted dV/dt parasitic gate turn-on events.
- What is the sleep mode current consumption of the DRV8350FHRTVR?
The sleep mode supply current is 20 µA to 40 µA at VVM = 48 V).
- Does the DRV8350FHRTVR support functional safety standards?
Yes, it is Functional Safety Quality-Managed and provides documentation to aid in IEC 61800-5-2 functional safety system design).
- What package type is the DRV8350FHRTVR available in?
The DRV8350FHRTVR is available in a 32-pin WQFN (RTV) package).
- Can the DRV8350FHRTVR be used in sensored trapezoidal control of BLDC motors?
Yes, it supports 1x PWM mode for simple sensored trapezoidal control of BLDC motors using an internal block commutation table).
- Does the DRV8350FHRTVR have an SPI interface?
Yes, the device supports both SPI and hardware interfaces for communication with external controllers).
- What is the purpose of the integrated current shunt amplifiers in the DRV8350FHRTVR?
The integrated current shunt amplifiers provide adjustable gain (5, 10, 20, 40 V/V) to support different motor control schemes and current sensing applications).
