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從東(dong)沃(wo)GPS接(jie)口浪(lang)湧(yong)靜電(dian)保護(hu)(hu)(hu)方案(an)設計圖可知,東(dong)沃(wo)電(dian)子技術從兩個(ge)方面進行浪(lang)湧(yong)靜電(dian)防(fang)護(hu)(hu)(hu):壹個(ge)是(shi)對(dui)內饋直流電(dian)源進行浪(lang)湧(yong)防(fang)護(hu)(hu)(hu),另壹個(ge)是(shi)對(dui)射頻信號(hao)進行防(fang)護(hu)(hu)(hu)。壹級電(dian)源防(fang)護(hu)(hu)(hu),東(dong)沃(wo)技術推(tui)薦(jian)選用(yong)半導體放(fang)電(dian)管(guan)P0080SC,用(yong)于吸收雷擊或大浪(lang)湧(yong)電(dian)流。饋電(dian)部(bu)分防(fang)護(hu)(hu)(hu)選用(yong)單向瞬態抑(yi)制TVS二極管(guan)SMBJ6.0A和肖特基二極管(guan)B0520W,可有效保護(hu)(hu)(hu)後端LDO芯片免受浪(lang)湧(yong)的(de)沖(chong)擊。
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