嵌入式電源管理的新方法

　　實(shí)現(xiàn)低功耗是很容易的。只要有可能，就把你的MCU放在床上睡覺。現(xiàn)在，單片機(jī)有著不同的睡眠模式，每一種都帶來了自己獨(dú)特的挑戰(zhàn)。微芯片解釋了這些不同的模式是如何工作的以及何時使用它們的。

　　隨著越來越多的電子設(shè)備成為電池供電，保存這種權(quán)力已成為至高無上的。最近，制造商的微控制器（MCU）增加了通過電子開關(guān)控制電源的各種實(shí)現(xiàn)消費(fèi)的新方式。”從芯片的部分去除，戲劇性的力量儲蓄是可能的。此外，電壓監(jiān)測電路已經(jīng)取得了進(jìn)展，使它們可以連續(xù)使用，只消耗少量的電池電量。本文將探討這些新興技術(shù)，并提供一些關(guān)于何時以及如何使用這些技術(shù)的見解。

　　Simply sleeping is not enough

　　Traditionally， reduced power consumption has been accomplished in microcontroller-based applications by putting the MCU in sleep mode. This method has worked fine for many years; however， there are several trends that are now converging that make this solution inadequate.

　　More complexity has been added to MCUs in recent years along with the use of more advanced and therefore leaky， process nodes. Combine this with the market shift toward 10 to 20 year battery-powered applications such as utility meters， smoke detectors， and products associated with the green movement， and it becomes apparent that the traditional sleep mode is often no longer adequate. Extreme low-power is now required.