Microchip MTD6505三相BLDC马达控制解决方案

Microchip公司的MTD6505是三相全波无传感器BLDC马达控制器,具有180度正弦驱动,高转矩输出和安静驱动,工作电压2V到5.5V,内置频率发生器(FG),锁住保护和自动恢复电路,过流限制,热关断保护和风细雨过压保护.主要用在笔记本电脑CPU冷却风扇和5V三相BLDC马达.本文介绍了MTD6505主要特性,方框图,典型应用电路以及三相BLDC无传感器风扇控制器演示板主要特性,电路图和材料清单.

The MTD6505 device is a 3-phase full-wave sensorless driver for brushless DC (BLDC) motors. It features 180° sinusoidal drive, high torque output and silent drive. With the adaptive features, parameters and wide range of power supplies (2V to 5.5V), the MTD6505 is intended to cover a broad range of motor characteristics, while requiring minimum external components. Speed control can be achieved through either power supply modulation (PSM) or pulse-width modulation (PWM).

The compact packaging and the minimal bill-of material make the MTD6505 device extremely cost efficient in fan applications. For example, the CPU cooling fans in notebook computers require designs that provide low acoustic noise, low mechanical vibration, and are highly efficient. The frequency generator (FG) output enables precision speed control in closed-loop applications.
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