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鍦�1涓婚浕璺殑绲�(ji茅)妲�(g貌u)

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      杓稿叆闆诲锛欰C110/220V锛�
      杓稿叆闆诲璁婂嫊(d貌ng)鑼冨湇锛�90V锝�240V锛�
      杓稿叆闋荤巼锛�50/60Hz锛�
      杓稿嚭闆诲锛�12V锛�
      杓稿嚭闆绘祦锛�2.5A锛�
      宸ヤ綔闋荤巼鐨勯伕鎿囷細UC3843鐨勫吀鍨嬪伐浣滈牷鐜囩偤20kHz锝�500kHz銆傞枊闂�(gu膩n)闋荤巼鐨勯伕鎿囨焙瀹氫簡璁婃彌鍣ㄧ殑瑷卞鐗规€�銆傞枊闂�(gu膩n)闋荤巼瓒婇珮,璁婂鍣�銆侀浕鎰熷櫒楂旂⿳瓒婂皬,闆昏矾鐨勫嫊(d貌ng)鎱�(t脿i)闊挎噳(y墨ng)涔熻秺濂�銆備絾闅ㄨ憲闋荤巼鐨勬彁楂�,璜稿闁嬮棞(gu膩n)鎼嶈€�,闁€妤甸﹨(q奴)鍕�(d貌ng)鎼嶈€�,杓稿嚭鏁存祦绠＄殑鎼嶈€楁渻(hu矛)瓒婁締瓒婄獊鍑�,鑰屼笖闋荤巼瓒婇珮,灏�(du矛)纾佹€ф潗鏂欑殑閬告搰鍜屽弮鏁�(sh霉)瑷�(sh猫)瑷�(j矛)瑕佹眰鏈�(hu矛)瓒婅嫑鍒�,鍙﹀,楂橀牷涓嬬窔璺殑瀵勭敓鍙冩暩(sh霉)灏�(du矛)绶氳矾鐨勫奖闊跨▼搴﹂洠浠ラ爯(y霉)鏂�,鏁村€�(g猫)闆昏矾鐨勭┅(w臎n)瀹氭€�,閬�(y霉n)琛岀壒鎬т互鍙婄郴绲�(t菕ng)鐨勮(di脿o)瑭︽渻(hu矛)姣旇純鍥伴洠銆傛湰闆昏矾涓�,閬窻t=1.8k惟,Ct=10nF銆傜敱UC3843A瀹氭檪(sh铆)闆婚樆,闆诲鑸囨尟钑╁櫒闋荤巼鐨勯棞(gu膩n)绯绘洸绶氬湒,鍙緱闁嬮棞(gu膩n)闋荤巼鐐篺=85kHz锛屽懆鏈烼=11.8渭s锛涘崰绌烘瘮锛氳ō(sh猫)瑷�(j矛)鐒″伐闋昏畩澹撳櫒鐨勫柈绔婵€鍨嬮枊闂�(gu膩n)闆绘簮鏅�(sh铆)锛屼竴鑸崰绌烘瘮D鏈€澶т笉瓒呴亷0.5,閫欓噷閬窪max=0.5銆傚墖Tonmax=T路Dmax=5.9渭s銆�

 
3闆绘簮瑷�(sh猫)瑷�(j矛)

3 1璁婂鍣ㄥ拰杓稿嚭闆绘劅鐨勮ō(sh猫)瑷�(j矛)

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璁婂鍣ㄥ師閭婄窔鍦堝対鏁�(sh霉)鐐猴細N1=UImin脳Tonmax/Bmax脳Se寮忎腑UImin鐐烘渶灏忕洿娴佽几鍏ラ浕澹�?锛熺搐]鍒颁氦娴佽几鍏ラ浕澹撶偤110V卤20锛�,鍓囦氦娴佽几鍏ラ浕澹撴渶灏忓€肩磩鐐�90V锛屽嵆UImin=90脳=127V銆備唬鍏ュ緱N1=49.9锛屽彇50鍖�銆傚師閭婄窔鍦堥浕鎰熺偤锛歀1=N12AL=11.1mH銆傚壇閭婄窔鍦堝対鏁�(sh霉)鐐猴細N2= 寮忎腑UDF銆乁L鍒嗗垾鐐烘暣娴佷簩妤电D1鍜岃几鍑洪浕鎰烲涓婄殑澹撻檷,鍙朥DF锛婾L=0.7V,浠ｅ叆寰桸2=10鍖�銆傚壇閭婄窔鍦堥浕鎰熺偤锛歀2=N22AL=444渭H銆�
      闁嬮棞(gu膩n)绠℃柗闁嬫檪(sh铆)N1鍏╃鏈�(hu矛)鐢�(ch菐n)鐢熸劅鎳�(y墨ng)闆诲嫊(d貌ng)鍕�,鐐轰簡淇濊瓑闁嬮棞(gu膩n)绠℃甯稿伐浣�,灏囨劅鎳�(y墨ng)闆诲嫝闄愬埗鍒癳L鈮�300V銆傝嚜楗嬮浕绶氬湀瑕佸悜UC3843鎻愪緵VCC=12V宸ヤ綔闆诲锛屾寜闆诲C1涓婇浕澹揢C1=16V鑰冩叜,鍙繚璀夎冻澶犱緵闆荤郸UC3843锛岀敱Nf=(Uc1/eL)N1鍙緱Nf=2.67鍙�3鍖濄€傝畩澹撳櫒鍓倞闆绘祦鐐虹煩褰㈡尝锛屽叾鏈夋晥鍊糏2=Io路=1.77A锛屽皫(d菐o)绶氶浕娴佸瘑搴﹀彇4A/mm2锛屾墍闇€灏�(d菐o)绶氭埅闈㈢偤1.77/4=0.44mm2锛岄伕鐢ㄦ埅闈㈢⿳鐐�0.1521mm2鐨勫皫(d菐o)绶�(桅0.49)涓夋牴骞剁篂銆�
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鍙栬几鍑洪浕鎰熺殑闆绘祦璁婂寲螖IL=0.2Io=0.5A,鍓囪几鍑洪浕鎰熺偤锛歀=Tonmax
寮忎腑U2min鐐哄壇閭婄窔鍦堟渶灏忛浕澹�,U2min=(Uo锛婾DF+UL)/Dmax=25.4V锛屽彇UDF=0.5V锛孶omax=13V,浠ｅ叆鍙緱L=140渭H銆傛牴鎿�(j霉)杓稿嚭闆绘劅涓婇浕娴両L=Io锛屾墍闇€灏�(d菐o)绶氭埅闈㈡噳(y墨ng)鐐猴細2.5/4=0.625mm2锛岄伕鎿囨埅闈㈢⿳鐐�0.6362mm2鐨勫皫(d菐o)绶�(桅0 96)銆�

3 2闁嬮棞(gu膩n)绠�銆佹暣娴佷簩妤电銆佺簩(x霉)娴佷簩妤电鐨勯伕鎿�

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      闁嬮棞(gu膩n)绠℃壙鍙楃殑鏈€澶ч浕澹揢dsp=339锛�300=639V銆傝畩澹撳櫒鍕�(l矛)纾侀浕娴佺殑鏈€澶у€糏TrP=(UImax/L1)Tonmax=180mA,闁嬮棞(gu膩n)绠℃渶澶ч浕娴両dsP=(ID1PN2/N1)锛婭(xi脿n)TrP=0.73A銆傛牴鎿�(j霉)浠ヤ笂瑷�(j矛)绠�,閬哥敤鍔熺巼MOSFET2SK792锛屾紡婧愭搳绌块浕澹揃VDS=900V锛屾渶澶ф紡妤甸浕娴両Dmax=3A銆�

3 3鍙嶉闆昏矾鐨勮ō(sh猫)瑷�(j矛)

 
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鍦�2闆绘祦鍙嶉闆昏矾

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