DRV7308RENR中文资料德州仪器数据手册PDF规格书

1 Features

• Three-phase PWM motor driver with integrated

650V enhancement mode GaN FETs

• Up to 450V operating voltage

– 650V absolute maximum voltage

• High output current capability: 5A Peak current

• Low conduction loss: Low on-state resistance per

GaN FET: 205mΩ RDS(ON) at TA = 25°C

• Low switching loss: Zero reverse recovery, low

output capacitance, slew rate control

• Low distortion: Ultra-low propagation delay <

135ns, Ultra-low adaptive dead time < 200ns

• Integrated gate drives with slew rate control of

phase node voltage

– Slew rate options from 5V/ns to 40V/ns

• Integrated fast bootstrap GaN rectifier

• Low-side GaN FET open source pins to support 1-

or 2- or 3-shunt current sensing

• Supports up to 100kHz hard switching

• Integrates an amplifier for current sensing

• Supports 3.3V and 5V logic inputs, up to 20V

• BRAKE pin to turn on all low side GaN FETs

• Integrated temperature sensor

• >1.6mm clearance of motor phase (OUTx) to the

adjacent pins.

• 2mm clearance between VM and GND

• Integrated protection features

– GVDD and bootstrap under voltage lockout

– Over current protection for low-side GaN FET

– Over temperature protection

– PWM adaptive dead time insertion

– Current limit protection for all three phases

– Fault condition indication pin (nFAULT)

2 Applications

• Refrigerator & freezer

• Appliances and HVAC pumps and fans

• Dishwasher

• Small home appliances

• Residential air conditioners

• Cooker hood

• Brushless-DC motor modules

3 Description

The DRV7308 is a three-phase intelligent power

module (IPM) that consists of 205mΩ, 650V e-mode

Gallium-Nitride (GaN) for driving three-phase BLDC/

PMSM motors up to 450V DC rails. The applications

include field-oriented control (FOC), sinusoidal current

control, and trapezoidal (six step) current control of

BLDC motors. The device helps to achieve more

than 99% efficiency for a 3-phase modulated, FOCdriven,

250W motor drive application in a QFN 12mm

x 12mm package at 20kHz switching frequency,

eliminating the need for heat sink. The device helps

to achieve ultra quiet operation, with very low dead

time. The integrated bootstrap rectifier with bootstrap

current limit eliminates the need for an external

bootstrap diode.