TI DRV8312和Stellaris MCU三相BLDC马达驱动方案

TI公司的三相BLDC马达驱动套件DK-LM3S-DRV8312采用DRV8312三相马达驱动器和Stellaris MCU,是中电压数字马达控制(DMC)套件,能驱动三相BLDC和永磁同步马达,输入电压最大52.5V,每相连续输出电流最大3.5A,峰值电流6.5A,驱动器开关频率高达500kHz.本文介绍了DRV8312/32主要特性,系统框图,三相应用框图和DRV8312应用案例电路图,以及DK-LM3S-DRV8312主要特性, 马达驱动系统框图, DRV8312评估板电路图和PCB布局图.

The DRV8312/32 are high performance, integrated three phase 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%, which enables the use of smaller power supplies and heatsinks, and are good candidates for energy efficient applications.

The DRV8312/32 require two power supplies, one at 12 V for GVDD and VDD, and another up to 50 V for PVDD. The DRV8312/32 can operate at up to 500-kHz switching frequency while still maintain precise control and high efficiency. They also have an innovative protection system safeguarding the device against a wide range of fault conditions that could damage the system.

DRV8312/32主要特性:

High-Efficiency Power Stage (up to 97%) with Low RDS(on) MOSFETs (80 m at TJ = 25°C)
..

查看全文