?iCoupler數(shù)字隔離器提供關(guān)鍵的好處在太陽(yáng)能光伏逆變器光電耦合器

　　不論在考慮太陽(yáng)能光伏逆變器系統(tǒng)的類型是否是一個(gè)系統(tǒng)的中央逆變器，或是否采用分布式微逆變器，或許這是一個(gè)新的直流優(yōu)化器，借用類型實(shí)施隔離是必要的。這是不可避免的，因?yàn)橄到y(tǒng)的各個(gè)部分在非常不同的直流和交流電平下工作。也有監(jiān)管問(wèn)題，要求最低的電氣隔離屏障，以滿足安全的原因。

　　由于其廣泛的可用性和功能性，傳統(tǒng)上被用來(lái)提供光耦隔離。然而，光電耦合器的使用該應(yīng)用已經(jīng)引起了擔(dān)憂，由于眾所周知的不足；最值得注意的是，在電流傳輸比（CTR）的降解，在設(shè)備的使用壽命。為了減輕對(duì)CTR退化，光耦電路的設(shè)計(jì)通常是嚴(yán)重超載，將帶來(lái)一系列的問(wèn)題，包括散熱和熄滅。即使有一個(gè)過(guò)度駕駛制度，這是值得懷疑的設(shè)備是否將持續(xù)標(biāo)準(zhǔn)的20年壽命，許多這樣的逆變器提供。

　　Analog Devices’ digital isolators with iCoupler? technology enable designers to implement isolation in designs without the cost， size， power， performance， and reliability constraints found with optocouplers. With more than half a billion channels shipped into the field， these magnetically isolated products are a safe， reliable and easy-to-use alternative to optocouplers. Furthermore， the technology allows isolated power to be incorporated in addition to the digital signal isolation functionality. In an inverter， isolated power can be utilized to offer complete isolated gate driver products with low power consumption and tight timing characteristics across all conditions. In contrast， the optocoupler-based gate drivers are very power hungry and also suffer from large variations in the gate driver timing specifications.