銆�銆�LTC3838-2 鏄竴娆炬搧鏈夊叐鍊嬬浉灏嶇崹绔嬬殑浣滄キ(y猫)閫氶亾鐨�銆佸鐩� 鍚屾闄嶅鍨� DC/DC 闁嬮棞绌�(w臎n)澹撴帶鍒跺櫒銆傚叐鍊嬬崹绔嬬殑閫氶亾浣滅敤浜庨﹨鍕曞叏 N 婧濋亾鍔熺巼 MOSFET.鍙﹀锛屼篃鍙埄鐢ㄥ閮ㄥ熀婧栧皣鍏╁�嬮�氶亾绲勫悎鎴愪竴绋鐩稿柈杓稿嚭閰嶇疆銆�
銆�銆�路瀵� VIN 鑼冨湇锛�4.5V 鑷� 38V
銆�銆�路VOUT1:0.6V 鑷� 5.5V,卤0.67% 杓稿嚭瑾挎帶绮炬簴搴︼紝閲囩敤鍏ч儴0.6V VREFERENCE
銆�銆�路VOUT2:0.4V 鑷� 5.5V,卤4mV 瑾挎帶绮炬簴搴�锛岄噰鐢ㄥ閮ㄥ垎宸� VREFERENCE 瀵︽脯
銆�銆�路宸垎閬犵杓稿嚭妾㈡脯锛涢珮閬� 卤500mV 锛圴OUT1锛� 鍜� 卤200mV 锛圴OUT2锛� 鐨勫湴闆讳綅鍋忓樊
銆�銆�路蹇�熻矤杓夌灛鎱�(t脿i)闊挎噳锛屽苟鐒″欢閬叉檪閻�
銆�銆�路鐬畩妾㈡脯閲嬫斁鍔熻兘鍙姂鍒� VOUT 閬庢矕
銆�銆�路闋荤巼鍙法绋嬭寖鍦嶏細200kHz 鑷� 2MHz,鍙悓姝ヨ嚦澶栭儴鏅傞悩
銆�銆�路tON锛圡IN锛� = 30ns,tOFF锛圡IN锛� = 90ns
銆�銆�路RSENSE 鎴栭浕鎰熷櫒 DCR 闆绘祦妾㈡脯
銆�銆�路鑳藉淇濋殰鍕曟厠(t脿i)闆诲瑾挎帶鑳藉姏鐨凙SIC 渚涢浕
銆�銆�路闇�瑕佸毚鏍肩灛鎱�(t脿i)瑾跨瘈(ji茅)鐨勫ぇ闆绘祦銆佷綆闆诲銆侀珮闄嶅姣旇綁鎻涘櫒
銆�銆�鍙楁帶鍒堕�ｉ�氭檪闁�銆佽胺鍊奸浕娴佹ā寮忔帶鍒舵灦妲嬩笉鍍呭彲瀵︾従(xi脿n)鐒℃檪閻樺欢閬茬殑蹇�熺灛鎱�(t脿i)闊挎噳锛岃�屼笖閭勮兘鍦ㄧ┅(w臎n)瀹氳矤杓夋浠朵笅鍩�(zh铆)琛屾亽瀹氶牷鐜囬枊闂滃嫊浣�銆侱TR椤憲鍦版姂鍒朵簡浣庤几鍑洪浕澹撴浠朵笅鐨勯亷娌�銆�
銆�銆�闁嬮棞闋荤巼鍙埄鐢ㄤ竴鍊嬪閮ㄩ浕闃诲櫒瑷疆鍦� 200kHz 鑷� 2MHz 涔嬮枔锛岃�屼笖鍙互鍚屾鑷充竴鍊嬪閮ㄦ檪閻�銆�
銆�銆�浣庡伐浣滈浕娴� 锛堢劇璨犺級鏅傜偤 20渭A,鍦ㄥ仠姗熸ā寮忎腑鐐� 4渭A锛� 鍜屼綆澶栭儴绲勪欢鏁�(sh霉)鐩� 锛�3 鍊嬪皬鍨嬮櫠鐡烽浕瀹瑰櫒锛� 浣垮緱 LTC3245 闈炲父閬╁悎浜庝綆鍔熺巼銆佺┖闁撳彈闄愮殑姹借粖 / 宸ユキ(y猫)鎳夌敤銆傞�欐鍣ㄤ欢鍏锋湁鐭矾鍜岄亷鐔变繚璀峰姛銆�
缍韩闆诲瓙閫氾紝闆诲瓙鐭ヨ瓨锛屼竴鏌ョ櫨閫氾紒
宸叉敹閷勮姊�153979鍊�
