TI DRV8332-12三相PWM马达驱动方案
TI公司的DRV8312/32是集成了高档保护系统的高性能三相PWM马达驱动器。采用了低RDS(on) 功率MOSFET，是其效率高达97%，工作电压高达50V，DRV8312连续相电流高达3.5A（峰值6.5A），DRV8332连续相电流高达8A（峰值13A），PWM工作频率高达500kHz ,具有欠压，超温，过载和短路保护特性以及可编程的逐个周期的限流保护，主要应用在BLDC马达，三相永磁同步马达，逆变器，半桥驱动器和机器人控制系统。本文介绍了DRV8312/32主要特性，DRV8312/32系统方框图，DRV8332和DRV8312三相应用电路图，以及DRV8312应用案例电路图和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℃)
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