Texas Instruments DRV835x Three-Phase Smart Drivers
Texas Instruments DRV835x Three-Phase Smart Drivers are highly-integrated gate drivers for three-phase brushless DC (BLDC) motor applications. These applications include field-oriented control (FOC), sinusoidal current control, and trapezoidal current control of BLDC motors. The device variants provide optional integrated current shunt amplifiers to support different motor control schemes and a buck regulator to power the gate driver or external controller.
The DRV835x uses smart gate drive (SGD) architecture to decrease the number of external components that are typically necessary for MOSFET slew rate control and protection circuits. The SGD architecture also optimizes dead time to prevent shoot-through conditions, provides flexibility in decreasing electromagnetic interference (EMI) by MOSFET slew rate control, and protects against gate short circuit conditions through VGS monitors. A strong gate pulldown circuit helps prevent unwanted dV/dt parasitic gate turn on events.
Features
- 9V to 100V, Triple half-bridge gate driver
- Optional integrated buck regulator
- Optional triple low-side current shunt amplifiers
- Smart gate drive architecture
- Adjustable slew rate control for EMI performance
- VGS Handshake and minimum dead-time insertion to prevent shoot-through
- 50mA to 1A Peak source current
- 100mA to 2A Peak sink current
- dV/dt Mitigation through strong pulldown
- Integrated Gate driver power supplies
- High-side doubler charge pump for 100% PWM duty cycle control
- Low-side linear regulator
- Integrated LM5008A buck regulator
- 6V to 95V Operating voltage range
- 2.5V to 75V, 350mA Output capability
- Integrated triple current shunt amplifiers
- Adjustable gain (5, 10, 20, 40V/V)
- Bidirectional or Unidirectional Support
- 6x, 3x, 1x, and Independent PWM modes
- Supports 120° sensored operation
- SPI or Hardware interface available
- Low-power sleep mode (20µA at VVM = 48V)
- Integrated protection features
- VM Undervoltage Lockout (UVLO)
- Gate Drive Supply Undervoltage (GDUV)
- MOSFET VDS Overcurrent Protection (OCP)
- MOSFET Shoot-Through Prevention
- Gate Driver Fault (GDF)
- Thermal Warning and Shutdown (OTW/OTSD)
- Fault Condition Indicator (nFAULT)
Applications
- 3-Phase brushless-DC (BLDC) motor modules
- Fans, blowers, and pumps
- E-Bikes, E-scooters, and E-mobility
- Power and garden tools, lawnmowers
- Drones, robotics, and RC toys
- Factory automation and textile machines
Simplified Schematic
Related Development Tools
Texas Instruments DRV8353Rx-EVM Driver Evaluation Module (EVM)
3-phase brushless DC drive stage based on the DRV8353RH or DRV83583RS gate driver.
Texas Instruments DRV8350x-EVM Driver Evaluation Module (EVM)
3-phase brushless DC drive stage based on DRV8350x gate driver & CSD19532Q5B NexFET™ power blocks.