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SMSCEMC2305多转速5风扇PWM控制方案

2017-11-24 05:41 PM| 发布者: 胜铉的小可爱| 查看: 474| 评论: 0

摘要: SMSC公司的EMC2305是多转速5风扇PWM控制器,SMBus2.0兼容,每个风扇驱动器由可编程频率的PWM驱动器和风扇速度控制算法来控制,高速PWM频率26kHz,低速PWM频率从9.5Hz到2240Hz,{方案}RPM的控制算法从500RPM到16kRPM(外接 ...

SMSC 公司的EMC2305是多转速5风扇PWM控制器, SMBus 2.0兼容,每个风扇驱动器由可编程频率的PWM驱动器和风扇速度控制算法来控制,高速PWM频率26kHz,低速PWM频率从9.5Hz到2240Hz,{方案}RPM的控制算法从500 RPM 到16k RPM(外接晶振)的精度为0.5%,从500 RPM 到16k RPM(内部时钟)的精度为1%,可用于服务器,投映仪,工业和网络设备以及条记本电脑.本京电港论坛文章先容了EMC2305的主要特点,方框架图以及EMC2305参考方案电路原理图纸.

EMC2305: Multiple RPM-Based PWM Fan Controller for Five Fans

The EMC2305 is an SMBus compliant fan controller with up to five independently controlled PWM fan drivers. Each fan driver is controlled by a programmable frequency PWM driver and Fan Speed Control algorithm that operates in either a closed loop fashion or as a directly PWM-controlled device.

The closed loop Fan Speed Control algorithm (FSC) has the capability to detect aging fans and alert the system. It will likewise detect and stalled or locked fans and trigger an interrupt.

Additionally, the EMC2305 offers a clock output so that multiple devices may be chained and slaved to the same clock source for optimal performance in large distributed systems.

EMC2305主要特点:


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