微電壓調(diào)節(jié)器滿足可穿戴電子空間限制

　　無線傳感器內(nèi)置眼鏡，手表，運(yùn)動(dòng)跟蹤，甚至衣服承諾革命性的連接和形成物聯(lián)網(wǎng)的重要組成部分（物聯(lián)網(wǎng)）。一些分析師預(yù)測(cè)，該行業(yè)的價(jià)值可能會(huì)達(dá)到1310億美元驚人的2020美元。雖然可穿戴式電子產(chǎn)品是一個(gè)領(lǐng)先的技術(shù)，它只是一個(gè)空間約束的設(shè)計(jì)挑戰(zhàn)工程師的最新例子。

　　緊湊的產(chǎn)品把電源設(shè)計(jì)師，他或她將拿出一個(gè)強(qiáng)大的電路，特定的壓力下，依靠微型電池和占用只有幾十平方毫米的電源處理器、存儲(chǔ)器、外圍元器件，甚至一個(gè)渴求能源的顯示。

　　幸運(yùn)的是，工程師可以利用新一代的微型DC / DC開關(guān)電壓轉(zhuǎn)換器（“穩(wěn)壓器”）。這些高度集成的電源模塊適合微小的足跡，但提供效率和功能與更大的設(shè)備看齊。本文仔細(xì)考慮開關(guān)穩(wěn)壓器設(shè)計(jì)的空間受限的應(yīng)用程序。

　　Working with small batteries

　　Wearable electronics are an exercise in Lilliputian engineering. A key design criterion is that the product should be unobtrusive. That places constraints on size and weight and in turn on the capacity of the power source. Some products， such as smart watches with powerful computation capabilities and GPS， are designed to act as “hubs” for a wirelessly connected “body area network”， and will likely use Li-ion batteries that consumers accept need topping-up every few days. However， buyers will be much less likely to tolerate recharging or frequent battery changes for the small sensors （for example， heart-rate monitors and speed and distance pods） that make up the peripheral elements of a personal network