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從東(dong)沃(wo)GPS接口浪(lang)湧(yong)(yong)靜電(dian)保護(hu)方案(an)設計圖可知,東(dong)沃(wo)電(dian)子(zi)技(ji)術(shu)從兩個方面進行浪(lang)湧(yong)(yong)靜電(dian)防(fang)護(hu):壹個是(shi)對(dui)(dui)內饋直流(liu)電(dian)源(yuan)(yuan)進行浪(lang)湧(yong)(yong)防(fang)護(hu),另壹個是(shi)對(dui)(dui)射頻(pin)信號進行防(fang)護(hu)。壹級(ji)電(dian)源(yuan)(yuan)防(fang)護(hu),東(dong)沃(wo)技(ji)術(shu)推薦選用半導(dao)體放電(dian)管(guan)P0080SC,用于吸收雷擊或大浪(lang)湧(yong)(yong)電(dian)流(liu)。饋電(dian)部(bu)分防(fang)護(hu)選用單向瞬態(tai)抑制TVS二極(ji)管(guan)SMBJ6.0A和肖特(te)基二極(ji)管(guan)B0520W,可有效(xiao)保護(hu)後端LDO芯片(pian)免受浪(lang)湧(yong)(yong)的沖擊。
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