功率限制設(shè)計(jì)中的峰值功率要求

　　藍(lán)牙低功耗（BLE），也被稱(chēng)為藍(lán)牙智能，提供了高效的連接和互操作性必不可少的服飾，物聯(lián)網(wǎng)的應(yīng)用，與其他智能設(shè)備。對(duì)于設(shè)計(jì)人員，在這些設(shè)計(jì)中有限的功率預(yù)算繼續(xù)挑戰(zhàn)他們的需求，以滿(mǎn)足消費(fèi)者的需求，包括連接和延長(zhǎng)工作時(shí)間。通過(guò)了解BLE的峰值功率要求，工程師可以滿(mǎn)足嚴(yán)格的功率預(yù)算和有效的連接要求使用廠家包括Dialog半導(dǎo)體，LSR，村田電子、松下提供芯片和模塊，德克薩斯文書(shū)，其中。

　　可穿戴設(shè)備和物聯(lián)網(wǎng)設(shè)備的快速接受了高杠桿低功耗設(shè)計(jì)方法的能力，興趣，包括能量回收，延長(zhǎng)電池的使用壽命甚至完全消除。消費(fèi)者對(duì)易用無(wú)線(xiàn)連接的需求繼續(xù)挑戰(zhàn)設(shè)計(jì)者的能力，以平衡可用的電源與一般和無(wú)線(xiàn)通信中的應(yīng)用程序所需的功率。

　　In wireless communications， power consumption is a function of a complex set of factors. In considering the power budget for a design， engineers must not only include more familiar device current requirements for receive， transmit， and quiescent states but also account for power requirements related to the communications protocol itself. A simple protocol able to initialize quickly， rapidly transmit a short burst of data， and return quickly to a sleep state will typically result in lower overall power requirements than a protocol that might offer more complex functionality but require more time – and power – to do so.

　　For some applications， the need to achieve particular objectives for transmission range and data rate within a specified power budget can dictate use of a custom communications protocol. Here， protocol designers can pare away overhead -- trading reduced flexibility for longer range， higher throughput， and lower power， for example. For the emerging class of wearable and IoT applications， however， standards-based communications is a base requirement for a market filled with an installed base of products， including smartphones， tablets， and other mobile devices. For communicating with these products， Bluetooth has become the common connectivity option and BLE has rapidly emerged as the preferred option for connecting wearables and other personal electronic devices to these hosts.