數(shù)字電源管理如何提高藍(lán)牙無(wú)線收發(fā)器在物聯(lián)網(wǎng)中的性能

　　功耗是一個(gè)關(guān)鍵的設(shè)計(jì)標(biāo)準(zhǔn)，無(wú)線傳感器節(jié)點(diǎn)必須容易連接到物聯(lián)網(wǎng)。

　　跨越無(wú)線收發(fā)器和微控制器的電源管理是實(shí)現(xiàn)盡可能低的功耗，以實(shí)現(xiàn)最長(zhǎng)的電池壽命的重要組成部分，但它可能需要一個(gè)復(fù)雜的硬件，軟件和分析混合。

　　從Silicon Labs的bgm113是一個(gè)完全集成的藍(lán)牙低能量模塊相結(jié)合，注冊(cè)一個(gè)2.4 GHz藍(lán)牙系統(tǒng)芯片，高效陶瓷芯片天線和藍(lán)牙4.2-compliant軟件棧。

　　The low-power EFM32 Gecko microcontroller technology is combined with an ultra-low-power Bluetooth Smart transceiver on a single die. This allows for more effective digital power management with fast wake-up times， higher RF sensitivity and transparent management of the peripherals to minimize the power used. The fully-integrated power amplifier and balun allows for a +10 dBm boost in RF sensitivity with more opportunities for power management closely coupled to the application.

　　The ARM? Cortex?-M4 core supports 128 to 256 kB flash sizes and 16 to 32 kB RAM sizes alongside a range of low-energy peripherals that are connected via the Peripheral Reflex System （PRS）。 This allows them to operate autonomously from the controller as part of the digital power management.
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