Cypress CY8CKIT-036 PSoC热管理解决方案

Cypress公司的CY8CKIT-036 PSoC热管理扩展板用来评估系统的热管理功能和PSoC架构的能力,支持多达4线风扇的控制,六个不同模拟和数字传感器组合的温度检测,基于EEPROM的数据记录,I2C/SMbus/PMbus主接口,热区管理(温度和风扇速度的关系),检测热和冷却故障或告警的算法.典型解决方案包括多个器件如CPLD,混合信号ASIC和/或有限功能以及刚性分立器件.本文介绍了CY8CKIT-036 PSoC热管理扩展板主要功能,框图,热管理功能(TME)功能框图以及扩展板电路图,材料清单和PCB元件布局图.
In general terms, thermal management is a combination of temperature sensing, fan control and the algorithms or transfer functions that map temperature to fan speed. Thermal management is a critical, system-level function that needs to ensure that all components in the system operate within safe temperature limits, while at the same time minimizing power consumption and acoustic noise.
Typical solutions for thermal management include multiple devices such as CPLDs, mixed-signal ASICs and/or limited-functionality and inflexible discrete devices. Thermal management solutions need to be flexible enough to interface with many kinds of both digital and analog temperature sensors. To maximize efficiency, they must also be able to drive a multitude of fans independently. Finally, thermal management solutions must have enough intelligence built in to reliably control the cooling systems autonomously, independent of a master control processor in the event that communications are lost or the master control processors fail or go offline. The PSoC?3 architecture enables a flexible and unique method of thermal management in a single chip, combining analog sensing capabilities for any kind of analog temperature sensor such as remote diodes, thermistors, resistance temperature detectors (RTDs), etc. PSoC 3抯 versatile digital resource pool enables the integration of multiple I2C bus interfaces, capture timers and even full-custom logic to support interfaces to a wide variety of digital temperature sensors such as I2C based, pulse-width-modulate...