EMC2303中文资料Closed Loop Fan Controller数据手册Microchip规格书

描述 Description

The EMC2303 is an SMBus compliant fan controller with up to three 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 stalled or locked fans and trigger an interrupt.Additionally, the EMC2303 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.

特性 Features

Features
• Three Programmable Fan Control circuits
• 4-wire fan compatible
• High speed PWM (26 kHz)
• Low speed PWM (9.5Hz - 2240 Hz)
• Optional detection of aging fans
• Fan Spin Up Control and Ramp Rate Control
• Alert on Fan Stall
• Up to 3 Selectable Default Fan Speeds
• Watchdog Timer
• RPM-based fan control algorithm
• 0.5% accuracy from 500 RPM to 16k RPM (external crystal oscillator)
• 1% accuracy from 500 RPM to 16k RPM (internal clock)
• SMBus 2.0 Compliant
• Up to 6 selectable SMBus addresses
• SMBus Alert compatible
• CLK Pin can provide a clock source output
• Available in a 12-pin 4mm x 4mm QFN RoHS Compliant package
 Applications
• Servers
• Projectors
• Industrial and Networking Equipment
• Notebook Computers

应用 Application

·Servers
·Projectors
·Industrial and Networking Equipment
·Notebook Computers

简介

EMC2303属于集成电路（IC）的电机驱动器控制器。由制造生产的EMC2303电机驱动器，控制器产品属于电机驱动器和控制器电源管理集成电路 (PMIC) 系列，可用于控制或操作从某电源施加到电机或相关机电执行器的电源。所实现的具体功能和特性集根据预期负载和预期应用的特性有很大差异，范围从用于有刷电机的简单开环速度控制到基于步进电机的高级闭环运动控制。