Texas Instruments DRV7308 3-Phase 650V GaN Intelligent Power Module
Texas Instruments DRV7308 Three-Phase Gallium-Nitride (GaN) Intelligent Power Module (IPM) features a 205mΩ, 650V e-mode GaN for driving three-phase brushless DC (BLDC) and permanent magnet synchronous motor (PMSM) motors up to 450VDC rails. The applications consist of field-oriented control (FOC), sinusoidal current control, and trapezoidal (six-step) current control of BLDC motors. The DRV7308 module helps to achieve greater than 99% efficiency in a three-phase modulated, FOC-driven, 250W motor drive application, and this is all accomplished in a QFN 12mm x 12mm package at 20kHz switching frequency, eliminating the need for a heat sink. Texas Instruments DRV7308 GaN IPM helps provide ultra-quiet operation with low dead time and is ideal for appliances, HVAC pumps and fans, residential air conditioners, cooker hoods, and brushless-DC motor modules.
Features
- Three-phase PWM motor driver with integrated 650V enhancement mode GaNFETs
- Up to 450V operating voltage with 650V absolute maximum voltage
- High output current capability of 5A peak current
- Low conduction loss with low on-state resistance per GaN FET of 205mΩ RDS(ON) at TA = 25°C
- Low switching loss - zero reverse recovery, low output capacitance, and slew rate control
- Low distortion
- <135ns propagation delay
- <200ns adaptive dead time
- Integrated gate drives with slew rate control of phase node voltage
- 5V/ns to 40V/ns slew rate options
- 500ns minimum low side on-time support with integrated fast bootstrap GaN rectifier
- Low-side GaN FET open source pins to support 1-, 2-, or 3-shunt current sensing
- Supports up to 60kHz hard switching
- Integrates 11MHz, 15V/µs amplifier for single shunt current sensing
- Supports 3.3V and 5V logic inputs
- Integrated BRAKE functionality to turn on all low-side GaN FETs together
- Integrated temperature sensor
- >1.6mm clearance between OUTx and OUTx, VM and OUTx, and OUTx and PGND
- 2mm clearance between VM and PGND
- Integrated protection
- GVDD and bootstrap undervoltage lockout
- Overcurrent protection for each GaN FET
- Overtemperature protection
- PWM input dead time
- Current limit protection using integrated comparators for all three phases
- Fault condition indication pin (HV_nFAULT)
- QFN 12mm x 12mm package
Applications
- Refrigerators and freezers
- Appliance and HVAC pumps and fans
- Dishwashers
- Small home appliances
- Residential air conditioners
- Cooker hoods
- Brushless-DC motor modules
Videos
Simplified Schematic
