IDT 9TCS1083温度和风扇控制解决方案

IDT公司的9TCS1083是业界首个集成了时序,多个温度传感器和PWM风扇控制的解决方案.温度测量在60-100度C时的精度为±1℃ ,在0-100度C时的精度为 ±2℃, 风扇控制采用高频或低频PWM输出,系统的PLL可产生超低频32.768 kHz输出,主要用在笔记本电脑,上网本,手持消费类电子,嵌入系统,网络设备如路由器,交换器以及网络局部存储.本文介绍了9TCS1083主要特性, 方框图,典型应用电路和参考设计电路.

The 9TCS1083 is a highly programmable IC that integrates clock synthesizers with a PWM Fan controller and multiple temperature sensors for hardware thermal protection.

The device has an ultra-low-power 32.768 kHz frequency generator to support Real Time Clocks (RTC). This device can generate the 32.768 kHz frequency up to four years powered by a CR2032 battery. The 9TCS1083 can output computer system clock frequencies of 24, 25, 27, and 48 MHz which will reduce the component count on the circuit board.

The fan controller is pulsed width modulated (PWM) used for the temperature proportional speed control. The device is highly configurable through I2C for ease and flexibility of use. The fan controller has three different modes of operation and will work with multiple pole, brushless DC fans. An integrated Start-up Timer ensures reliable motor start-up and turn-on, or following a detected fault condition.
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