DRV8312DDWRG4.B中文资料德州仪器数据手册PDF规格书

1 Features

• High-Efficiency Power Stage (up to 97%) With Low

RDS(on) MOSFETs (80 mΩ at TJ = 25°C)

• Operating Supply Voltage up to 50 V

(70-A Absolute Maximum)

• DRV8312 (Power Pad Down): up to 3.5-A

Continuous Phase Current (6.5-A Peak)

• DRV8332 (Power Pad Up): up to 8-A Continuous

Phase Current (13-A Peak)

• Independent Control of Three Phases

• PWM Operating Frequency up to 500 kHz

• Integrated Self-Protection Circuits Including

Undervoltage, Overtemperature, Overload, and

Short Circuit

• Programmable Cycle-by-Cycle Current Limit

Protection

• Independent Supply and Ground Pins for Each

Half Bridge

• Intelligent Gate Drive and Cross Conduction

Prevention

• No External Snubber or Schottky Diode is

Required

2 Applications

• BLDC Motors

• Three-Phase Permanent Magnet Synchronous

Motors

• Inverters

• Half Bridge Drivers

• Robotic Control Systems

3 Description

The DRV83x2 are high-performance, integrated threephase

motor drivers with an advanced protection

system.

Because of the low RDS(on) of the power MOSFETs

and intelligent gate drive design, the efficiency of

these motor drivers can be up to 97%. This high

efficiency the use of smaller power supplies and

heatsinks, and the devices are good candidates for

energy-efficient applications.

The DRV83x2 require two power supplies, one at

12 V for GVDD and VDD, and another up to 50 V

for PVDD. The DRV83x2 can operate at up to 500-

kHz switching frequency while still maintaining precise

control and high efficiency. The devices also have an

innovative protection system safeguarding the device

against a wide range of fault conditions that could

damage the system. These safeguards are shortcircuit

protection, overcurrent protection, undervoltage

protection, and two-stage thermal protection. The

DRV83x2 have a current-limiting circuit that prevents

device shutdown during load transients such as motor

start-up. A programmable overcurrent detector allows

adjustable current limit and protection level to meet

different motor requirements.

The DRV83x2 have unique independent supply and

ground pins for each half-bridge. These pins make

it possible to provide current measurement through

external shunt resistor and support half bridge drivers

with different power supply voltage requirements.