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從東沃(wo)(wo)GPS接(jie)口浪(lang)(lang)涌(yong)(yong)(yong)(yong)靜(jing)電(dian)(dian)保(bao)護(hu)(hu)方案設計圖可(ke)知,東沃(wo)(wo)電(dian)(dian)子技(ji)術(shu)從兩個方面進(jin)行(xing)浪(lang)(lang)涌(yong)(yong)(yong)(yong)靜(jing)電(dian)(dian)防護(hu)(hu):一(yi)個是(shi)對內饋直流電(dian)(dian)源進(jin)行(xing)浪(lang)(lang)涌(yong)(yong)(yong)(yong)防護(hu)(hu),另一(yi)個是(shi)對射(she)頻信號進(jin)行(xing)防護(hu)(hu)。一(yi)級電(dian)(dian)源防護(hu)(hu),東沃(wo)(wo)技(ji)術(shu)推薦選用(yong)(yong)(yong)半(ban)導體放電(dian)(dian)管P0080SC,用(yong)(yong)(yong)于吸收雷擊或大浪(lang)(lang)涌(yong)(yong)(yong)(yong)電(dian)(dian)流。饋電(dian)(dian)部分防護(hu)(hu)選用(yong)(yong)(yong)單向瞬態抑(yi)制(zhi)TVS二極管SMBJ6.0A和肖特基二極管B0520W,可(ke)有效(xiao)保(bao)護(hu)(hu)后端LDO芯(xin)片免(mian)受浪(lang)(lang)涌(yong)(yong)(yong)(yong)的沖擊。二級信號接(jie)口選用(yong)(yong)(yong)東沃(wo)(wo)推出(chu)的ESD靜(jing)電(dian)(dian)保(bao)護(hu)(hu)二極管DW05DLC-B-S,工作(zuo)電(dian)(dian)壓5V、低鉗(qian)位(wei)電(dian)(dian)壓18.3V、低漏電(dian)(dian)流1uA。
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