姒傝堪

    鑻辨枃鍚嶇ū锛欶lyback Transformer锛孎(xi脿n)lyback Converter.

    鍎�(y艒u)榛�

    鍙嶆縺寮忚畩澹撳櫒鐨勫劒(y艒u)榛炴湁:

    1. 闆昏矾绨″柈,鑳介珮鏁堟彁渚涘�氳矾鐩存祦杓稿��,鍥犳�ら仼鍚堝�氱祫杓稿嚭瑕佹眰.

    2. 杞�(zhu菐n)鎻涙晥鐜囬珮,鎼嶅け灏�.

    3. 璁婂�撳櫒鍖濇��(sh霉)姣斿�艰純灏�.

    4. 杓稿叆闆诲�撳湪寰堝ぇ鐨勮寖鍦嶅��(n猫i)娉㈠嫊鏅�,浠嶅彲鏈夎純绌�(w臎n)瀹氱殑杓稿嚭,鐩�鍓嶅凡鍙�瀵︾従(xi脿n)浜ゆ祦杓稿叆鍦� 85~265V闁�.鐒￠渶鍒囨彌鑰岄仈(d谩)鍒扮┅(w臎n)瀹氳几鍑虹殑瑕佹眰.

    缂洪粸

    鍙嶆縺寮忚畩澹撳櫒鐨勭己榛炴湁:

    1. 杓稿嚭闆诲�撲腑瀛樺湪杓冨ぇ鐨勭磱娉�,璨�(f霉)杓夎��(di脿o)鏁寸簿搴︿笉楂�,鍥犳�よ几鍑哄姛鐜囧彈鍒伴檺鍒�,閫氬父鎳�(y墨ng)鐢ㄤ簬150W浠ヤ笅.

    2. 杞�(zhu菐n)鎻涜畩澹撳櫒鍦ㄩ浕娴侀�ｇ簩(x霉)(CCM)妯″紡涓嬪伐浣滄檪,鏈夎純澶х殑鐩存祦鍒嗛噺,鏄撳皫(d菐o)鑷寸�佽姱椋藉��,鎵�浠ュ繀闋堝湪纾佽矾涓�鍔犲叆姘ｉ��,寰炶�岄�犳垚璁婂�撳櫒楂旂�嶈畩澶�.

    3. 璁婂�撳櫒鏈夌洿娴侀浕娴佹垚浠�,涓斿悓鏅傛渻宸ヤ綔浜嶤CM / DCM鍏╃ó妯″紡,鏁呰畩澹撳櫒鍦ㄨō(sh猫)瑷堟檪杓冨洶闆�,鍙嶅京(f霉)瑾�(di脿o)鏁存�℃��(sh霉)杓冮爢鍚戝紡澶�,杩�浠ｉ亷绋嬭純寰�(f霉)闆�.

    鍩烘湰鍘熺悊

    鐣�(d膩ng)闁嬮棞(gu膩n)鏅堕珨绠�Tr ton鏅�,璁婂�撳櫒鍒濈礆Np鏈夐浕娴� Ip,骞跺皣鑳介噺鍎插瓨浜庡叾涓�(E = LpIp / 2).鐢变簬Np鑸嘚s妤垫�х浉鍙�,姝ゆ檪浜屾サ绠�D鍙嶅悜鍋忓�撹�屾埅姝�,鐒¤兘閲忓偝閫佸埌璨�(f霉)杓�.鐣�(d膩ng)闁嬮棞(gu膩n)Tr off 鏅�,鐢辨�炴�″畾寰�: (e = -N鈻澄�/鈻砊)鍙�鐭�,璁婂�撳櫒鍘熼倞绻炵祫灏囩��(ch菐n)鐢熶竴鍙嶅悜闆诲嫝,姝ゆ檪浜屾サ绠�D姝ｅ悜?q奴)顬�?璨�(f霉)杓夋湁闆绘祦IL娴侀��.鍙嶆縺寮忚綁(zhu菐n)鎻涘櫒涔嬬┅(w臎n)鎱�(t脿i)娉㈠舰

    灏�(d菐o)閫氭檪闁� ton鐨勫ぇ灏忓皣姹哄畾Ip銆乂ce鐨勫箙鍊�:

    Vce max = VIN / 1-Dmax

    VIN: 杓稿叆鐩存祦闆诲�� ; Dmax : 宸ヤ綔鍛ㄦ湡

    Dmax = ton / T

    鐢辨�ゅ彲鐭�,鎯宠�佸緱鍒颁綆鐨勯泦闆绘サ闆诲��,蹇呴爤淇濇寔浣庣殑Dmax,涔熷氨鏄疍max<0.5,鍦ㄥ�﹂殯鎳�(y墨ng)鐢ㄤ腑閫氬父鍙朌max = 0.4,浠ラ檺鍒禫cemax 鈮� 2.2VIN.

    闁嬮棞(gu膩n)绠�Tr on鏅傜殑闆嗛浕妤靛伐浣滈浕娴両e,涔熷氨鏄�鍘熼倞宄板�奸浕娴両p鐐�: Ic = Ip = IL / n. 鍥營L = Io,鏁呯暥(d膩ng)Io涓�瀹氭檪,鍖濇瘮 n鐨勫ぇ灏忓嵆姹哄畾浜咺c鐨勫ぇ灏�,涓婂紡鏄�鎸夊姛鐜囧畧鎭掑師鍓�,鍘熷壇閭婂畨鍖濇暩(sh霉) 鐩哥瓑 NpIp = NsIs鑰屽皫(d菐o)鍑�. Ip浜﹀彲鐢ㄤ笅鍒楁柟娉曡〃绀�:

    Ic = Ip = 2Po / (畏*VIN*Dmax)畏: 杞�(zhu菐n)鎻涘櫒鐨勬晥鐜�

    鍏�寮忓��(d菐o)鍑哄�備��:

    杓稿嚭鍔熺巼 : Po = LIp2畏 / 2T

    杓稿叆闆诲�� : VIN = Ldi / dt瑷�(sh猫) di = Ip,涓� 1 / dt = f / Dmax,鍓�:

    VIN = LIpf / Dmax 鎴� Lp = VIN*Dmax / Ipf

    鍓嘝o鍙堝彲琛ㄧず鐐� :

    Po = 畏VINf DmaxIp2 / 2f Ip = 1/2畏VINDmaxIp

    鈭碔p = 2Po / 畏VINDmax

    涓婂垪鍏�寮忎�� :

    VIN : 鏈�灏忕洿娴佽几鍏ラ浕澹� (V)

    Dmax : 灏�(d菐o)閫氬崰绌烘瘮

    Lp : 璁婂�撳櫒鍒濈礆闆绘�� (mH)

    Ip : 璁婂�撳櫒鍘熼倞宄板�奸浕娴� (A)

    f : 杞�(zhu菐n)鎻涢牷鐜� (KHZ)

    宸ヤ綔鏂瑰紡

    鍙嶆縺寮忚畩澹撳櫒涓�鑸�宸ヤ綔浜庡叐绋�宸ヤ綔鏂瑰紡 :

    1. 闆绘劅闆绘祦涓嶉�ｇ簩(x霉)妯″紡DCM (Discontinuous Inductor Current Mode)鎴栫ū " 瀹屽叏鑳介噺杞�(zhu菐n)鎻� ": ton鏅傚劜瀛樺湪璁婂�撳櫒涓�鐨勬墍鏈夎兘閲忓湪鍙嶆縺鍛ㄦ湡 (toff)涓�閮借��(zhu菐n)绉诲埌杓稿嚭绔�.

    2. 闆绘劅闆绘祦閫ｇ簩(x霉)妯″紡CCM ( Continuous Inductor Current Mode) 鎴栫ū " 涓嶅畬鍏ㄨ兘閲忚綁(zhu菐n)鎻� " : 鍎插瓨鍦ㄨ畩澹撳櫒涓�鐨勪竴閮ㄥ垎鑳介噺鍦╰off鏈�淇濈暀鍒颁笅涓�鍊媡on鍛ㄦ湡鐨勯枊濮�.

    DCM鍜孋CM鍦ㄥ皬淇¤櫉鍌抽仦鍑芥暩(sh霉)鏂归潰鏄�妤典笉鐩稿悓鐨�,鍏舵尝褰㈠�傚��3.瀵﹂殯涓�,鐣�(d膩ng)璁婃彌鍣ㄨ几鍏ラ浕澹揤IN 鍦ㄤ竴鍊嬭純澶ц寖鍦嶅収(n猫i)鐧�(f膩)鐢熻畩鍖�,鎴栨槸璨�(f霉)杓夐浕娴� IL鍦ㄨ純澶ц寖鍦嶅収(n猫i)璁婂寲鏅�,蹇呯劧璺ㄨ秺钁楀叐绋�宸ヤ綔鏂瑰��.鍥犳�ゅ弽婵�寮忚綁(zhu菐n)鎻涘櫒瑕佹眰鍦―CM / CCM閮借兘绌�(w臎n)瀹氬伐浣�.浣嗗湪瑷�(sh猫)瑷堜笂鏄�姣旇純鍥伴洠鐨�.閫氬父鎴戝�戝彲浠ヤ互DCM / CCM鑷ㄧ晫鐙�鎱�(t脿i)浣滆ō(sh猫)瑷堝熀婧�(zh菙n).,骞堕厤浠ラ浕娴佹ā寮忔帶鍒禤WM.姝ゆ硶鍙�鏈夋晥瑙ｆ焙DCM鏅備箣鍚勭ó鍟忛��,浣嗗湪 CCM鏅傜劇娑堥櫎闆昏矾鍥烘湁鐨勪笉绌�(w臎n)瀹氬晱椤�.鍙�鐢ㄨ��(di脿o)绡�(ji茅)鎺у埗鐠�(hu谩n)澧炵泭绶ㄩ洟浣庨牷娈靛拰闄嶄綆鐬�鎱�(t脿i)闊挎噳(y墨ng)閫熷害渚嗚В姹篊CM鏅傚洜鍌抽仦鍑芥暩(sh霉) " 鍙冲崐骞抽潰闆堕粸 "寮曡捣鐨勪笉绌�(w臎n)瀹�.

    DCM鍜孋CM鍦ㄥ皬淇¤櫉鍌抽仦鍑芥暩(sh霉)鏂归潰鏄�妤典笉鐩稿悓鐨�.

    DCM / CCM鍘熷壇閭婇浕娴佹尝褰㈠湒

    瀵﹂殯涓�,鐣�(d膩ng)璁婃彌鍣ㄨ几鍏ラ浕澹揤IN鍦ㄤ竴鍊嬭純澶ц寖鍦嶅収(n猫i)鐧�(f膩)鐢熻畩鍖�,鎴栨槸璨�(f霉)杓夐浕娴� IL鍦ㄨ純澶ц寖鍦嶅収(n猫i)璁婂寲鏅�,蹇呯劧璺ㄨ秺钁楀叐绋�宸ヤ綔鏂瑰��.鍥犳�ゅ弽婵�寮忚綁(zhu菐n)鎻涘櫒瑕佹眰鍦―CM / CCM閮借兘绌�(w臎n)瀹氬伐浣�.浣嗗湪瑷�(sh猫)瑷堜笂鏄�姣旇純鍥伴洠鐨�.閫氬父鎴戝�戝彲浠ヤ互DCM / CCM鑷ㄧ晫鐙�鎱�(t脿i)浣滆ō(sh猫)瑷堝熀婧�(zh菙n).,骞堕厤浠ラ浕娴佹ā寮忔帶鍒禤WM.姝ゆ硶鍙�鏈夋晥瑙ｆ焙DCM鏅備箣鍚勭ó鍟忛��,浣嗗湪CCM鏅傜劇娑堥櫎闆昏矾鍥烘湁鐨勪笉绌�(w臎n)瀹氬晱椤�.鍙�鐢ㄨ��(di脿o)绡�(ji茅)鎺у埗鐠�(hu谩n)澧炵泭绶ㄩ洟浣庨牷娈靛拰闄嶄綆鐬�鎱�(t脿i)闊挎噳(y墨ng)閫熷害渚嗚В姹篊CM鏅傚洜鍌抽仦鍑芥暩(sh霉) " 鍙冲崐骞抽潰闆堕粸 "寮曡捣鐨勪笉绌�(w臎n)瀹�.

    鍦ㄧ┅(w臎n)瀹氱媭鎱�(t脿i)涓�,纾侀�氬�為噺螖桅鍦╰on鏅傜殑璁婂寲蹇呴爤绛変簬鍦�"toff"鏅傜殑璁婂寲,鍚﹀墖鏈冮�犳垚纾佽姱椋藉拰.

    鍥犳��,

    螖桅 = VIN ton / Np = Vs*toff / Ns

    鍗宠畩澹撳櫒鍘熼倞绻炵祫姣忓対鐨勪紡鐗�/绉掑�煎繀闋堢瓑浜庡壇閭婄篂绲勬瘡鍖濅紡鐗�/绉掑��.

    姣旇純鍦�3涓璂CM鑸嘋CM涔嬮浕娴佹尝褰㈠彲浠ョ煡閬�:DCM鐙�鎱�(t脿i)涓嬪湪Tr ton鏈熼枔,鏁村�嬭兘閲忚綁(zhu菐n)绉绘尝褰�涓�鍏锋湁杓冮珮鐨勫師閭婂嘲鍊奸浕娴�,閫欐槸鍥犵偤鍒濈礆闆绘劅鍊糒p鐩稿皪杓冧綆涔嬫晠,浣縄p鎬ュ妵鍗囬珮鎵�閫犳垚鐨勮矤(f霉)闈㈡晥鎳�(y墨ng)鏄�澧炲姞浜嗙篂绲勬悕鑰�(winding lose)鍜岃几鍏ユ烤娉㈤浕瀹瑰櫒鐨勬迹娉㈤浕娴�,寰炶�岃�佹眰闁嬮��(gu膩n)鏅堕珨绠″繀闋堝叿鏈夐珮闆绘祦鎵胯級鑳藉姏,鏂硅兘瀹夊叏宸ヤ綔.

    鍦–CM鐙�鎱�(t脿i)涓�,鍘熼倞宄板�奸浕娴佽純浣�,浣嗛枊闂�(gu膩n)鏅堕珨鍦╰on鐙�鎱�(t脿i)鏅傛湁杓冮珮鐨勯泦闆绘サ闆绘祦鍊�.鍥犳�ゅ��(d菐o)鑷撮枊闂�(gu膩n)鏅堕珨楂樺姛鐜囩殑娑堣��.鍚屾檪鐐洪仈(d谩)鎴怌CM,灏遍渶瑕佹湁杓冮珮鐨勮畩澹撳櫒鍘熼倞闆绘劅鍊糒p,鍦ㄨ畩澹撳櫒纾佽姱涓�鎵�鍎插瓨鐨勬畼浣欒兘閲忓墖瑕佹眰璁婂�撳櫒鐨勯珨绌嶈純DCM鏅傝�佸��,鑰屽叾瀹冪郴鏁�(sh霉)鏄�鐩哥瓑鐨�.

    缍滀笂鎵�杩�,DCM鑸嘋CM鐨勮畩澹撳櫒鍦ㄨō(sh猫)瑷堟檪鏄�鍩烘湰鐩稿悓鐨�,鍙�鏄�鍦ㄥ師閭婂嘲鍊奸浕娴佺殑瀹氱京鏈変簺鍗�(q奴)鍒� ( CCM鏅� Ip = Imax - Imin ).

    FLYBACK璁婂�撳櫒瑷�(sh猫)瑷堜箣鑰冮噺鍥犵礌

    1.鍎茶兘鑳藉姏.鐣�(d膩ng)璁婂�撳櫒宸ヤ綔浜嶤CM鏂瑰紡鏅�,鐢变簬鍑虹従(xi脿n)浜嗙洿娴佸垎閲�,闇�鍔燗IR GAP,浣跨�佸寲鏇茬窔鍚� H 杌稿偩鏂�,寰炶�屼娇璁婂�撳櫒鑳芥壙鍙楄純澶х殑闆绘��,鍌抽仦鏇村�氱殑鑳介��.

    Ve: 纾佽姱鍜屾埃闅欑殑鏈夋晥楂旂��.

    or P = 1/2Lp (Imax2 - Imin2)

    寮忎腑Imax, Imin 鈥斺�� 鐐哄皫(d菐o)閫氬懆鏈熸湯,濮嬬��鐩告噳(y墨ng)鐨勯浕娴佸��.

    鐢变簬鍙嶆縺寮忚畩澹撳櫒纾佽姱鍙�宸ヤ綔鍦ㄨ薄闄愮�佹化鍥炵窔,纾佽姱鍦ㄤ氦銆佺洿娴佷綔鐢ㄤ笅鐨凚.H鏁堟灉鑸嘇IR GAP澶у皬鏈夊瘑鍒囬棞(gu膩n)鑱�(li谩n),濡傚湒4.鍦ㄤ氦娴侀浕娴佷笅姘ｉ殭灏嵨擝ac鐒℃敼璁婃晥鏋�,浣嗗皪螖Hac灏囧ぇ澶у�炲��,閫欐槸鏈夊埄鐨勪竴闈�,鍙�鏈夋晥鍦版笡灏廋ORE鐨勬湁鏁堢�佸��(d菐o)鐜囧拰娓涘皯鍘熼倞绻炵祫鐨勯浕鎰�.

    鍦ㄧ洿娴侀浕娴佷笅姘ｉ殭鐨勫姞鍏ュ彲浣緾ORE鎵垮彈鏇村姞澶х殑鐩存祦闆绘祦鍘荤敘(ch菐n)鐢烪DC,鑰孊DC鍗荤董鎸佷笉璁�,鍥犳�ゅ湪澶х殑鐩存祦鍋忕疆涓嬪彲鏈夋晥鍦伴槻姝㈢�佽姱椋藉拰,閫欏皪鑳介噺鐨勫劜瀛樿垏鍌抽仦閮芥槸鏈夊埄鐨�. 鐣�(d膩ng)鍙嶆縺璁婂�撳櫒宸ヤ綔浜嶤CM鏅�,鏈夌浉鐣�(d膩ng)澶х殑鐩存祦鎴愪唤,閫欐檪灏卞繀闋堟湁姘ｉ殭.

    澶栧姞鐨勪紡绉掑��,鍖濇暩(sh霉)鍜岀�佽姱闈㈢�嶆焙瀹氫簡B杌镐笂螖Bac鍊�; 鐩存祦鐨勫钩鍧囬浕娴佸��,鍖濇暩(sh霉)鍜岀�佽矾闀峰害姹哄畾浜咹杌镐笂HDC鍊肩殑浣嶇疆. 螖Bac灏嶆噳(y墨ng)浜單擧ac鍊肩殑鑼冨湇.鍙�浠ョ湅鍑�,姘ｉ殭澶�螖Hac灏卞ぇ. 濡傛��,灏卞繀闋堟湁瓒冲�犵殑纾佽姱姘ｉ殭渚嗛槻姝㈤＝鍜岀媭鎱�(t脿i)骞跺钩绌�(w臎n)鐩存祦鎴愬垎.

    鍙嶆縺寮忚畩澹撳櫒瑷�(sh猫)瑷堟�ラ��

    渚嬪�傦細杓稿叆闆诲��:AC90-264V 杓稿嚭闆诲��:19V 杓稿嚭闆绘祦:3.16A 杓稿嚭鍔熺巼:60W 闋荤巼:70K

    Step1. 閬告搰CORE鏉愯唱(zh矛),纰哄畾鈻矪

    鏈�渚嬬偤ADAPTER DESIGN,鐢变簬瑭查�炲瀷姗熸暎鐔辨晥鏋滃��,鏁呴伕鎿嘋ORE鏉愯唱(zh矛)鎳�(y墨ng)鑰冮噺楂楤s,浣庢悕鑰楀強楂樜糹鏉愯唱(zh矛),绲�(ji茅)鍚堟垚鏈�鑰冮噺,鍦ㄦ�ら伕鐢‵errite Core, 浠�TDK 涔� PC40 or PC44鐐哄劒(y艒u)閬�, 灏嶆瘮TDK DATA BOOK, 鍙�鐭� PC44鏉愯唱(zh矛)鍠�浣嶅瘑搴�

    鐩搁棞(gu膩n)鍙冩暩(sh霉)濡備笅: 渭i = 2400 卤 25% Pvc = 300KW / m2 @100KHZ ,100鈩�

    Bs = 390mT Br = 60mT @ 100鈩� Tc = 215鈩�

    鐐洪槻姝�X'FMR鍑虹従(xi脿n)鐬�鎱�(t脿i)椋藉拰鏁堟噳(y墨ng), 姝や緥浠ヤ綆鈻矪瑷�(sh猫)瑷�.

    閬� 鈻矪 = 60%Bm, 鍗斥柍B = 0.6 * (390 - 60) = 198mT 鈮�0.2 T

    Step2纰哄畾Core Size鍜� Type.

    1> 姹俢ore AP浠ョ⒑瀹� size

    AP= AW*Ae=(Pt*104)/(2螖B*fs*J*Ku)

    = [(60/0.83+60)*104]/(2*0.2*70*103*400*0.2) = 0.59cm4

    寮忎腑 Pt = Po /畏 +Po 鍌抽仦鍔熺巼;

    J : 闆绘祦瀵嗗害 A / cm2 (300~500) ; Ku: 绻炵祫绯绘暩(sh霉) 0.2 ~ 0.5 .

    2> 褰㈢媭鍙婅��(gu墨)鏍肩⒑瀹�.

    褰㈢媭鐢卞�栭儴灏哄��,鍙�閰嶅悎BOBBIN, EMI瑕佹眰绛夋焙瀹�,瑕�(gu墨)鏍煎彲鍙冭�傾P鍊煎強褰㈢媭瑕佹眰鑰屾焙瀹�, 绲�(ji茅)鍚堜笂杩板師鍓�, 鏌ラ柋TDK涔婦ATA BOOK,鍙�鐭�RM10, LP32/13, EPC30鍧囧彲婊胯冻涓婅堪瑕佹眰,浣哛M10鍜孍PC30鍙�鐢ㄧ篂绶氬�圭�嶅潎灏忎簬LP32/13,鍦ㄦ�ら伕鐢↙P32/13 PC44,鍏跺弮鏁�(sh霉)濡備笅:

    Ae = 70.3 mm2 Aw = 125.3mm2 AL = 2630卤25% le = 64.0mm

    AP = 0.88 cm4 Ve = 4498mm3 Pt = 164W ( forward )

    Step3浼扮畻鑷ㄧ晫闆绘祦 IOB ( DCM / CCM BOUNDARY )

    鏈�渚嬩互IL閬�(d谩)80% Iomax鏅傜偤鑷ㄧ晫榛炶ō(sh猫)瑷堣畩澹撳櫒.

    鍗� : IOB = 80%*Io(max) = 0.8*3.16 = 2.528 A

    Step4姹傚対鏁�(sh霉)姣� n

    n = [VIN(min) / (Vo + Vf)] * [Dmax / (1-Dmax)] VIN(min) = 90*鈭�2 - 20 = 107V

    = [107 / (19 + 0.6)] *[0.5 / (1- 0.5)]

    = 5.5 鈮� 6

    鍖濇瘮 n 鍙�鍙� 5 鎴� 6,鍦ㄦ�ゅ�� 6 浠ラ檷浣庨惖鎼�,浣嗛妳鎼嶅皣鏈夋墍澧炲姞.

    CHECK Dmax:

    Dmax = n (Vo +Vf) / [VINmin + n (Vo + Vf)]= 6*(19 + 0.6) /[107 + 6*(19 + 0.6)] = 0.52

    Step5姹侰CM / DCM鑷�

    螖ISB = 2IOB / (1-Dmax) = 2*2.528 / (1-0.52) = 10.533

    Step6瑷堢畻娆＄礆闆绘劅 Ls 鍙婂師閭婇浕鎰� Lp

    Ls = (Vo + Vf)(1-Dmax) * Ts / 螖ISB = (19+0.6) * (1-0.52) * (1/70000) / 10=12.76uH

    Lp = n*n*Ls = 6*6*12.76 = 459.4 uH 鈮� 460

    姝ら浕鎰熷�肩偤鑷ㄧ晫闆绘劅,鑻ラ渶闆昏矾宸ヤ綔浜嶤CM,鍓囧彲澧炲ぇ姝ゅ��,鑻ラ渶宸ヤ綔浜嶥CM鍓囧彲閬╃暥(d膩ng)瑾�(di脿o)灏忔�ゅ��.

    Step7姹侰CM鏅傚壇閭婂嘲鍊奸浕娴佄攊sp

    Io(max) = (2螖Is + 螖ISB) * (1- Dmax) / 2 螖Is = Io(max) / (1-Dmax) - (螖ISB / 2 )

    螖Isp = 螖ISB +螖Is = Io(max) / (1-Dmax) + (螖ISB/2) = 3.16 / (1-0.52) + 10.533 / 2=11.85A

    Step8姹侰CM鏅傚師閭婂嘲鍊奸浕娴佄擨pp

    螖Ipp = 螖Isp / n = 11.85 / 6 = 1.975 A

    Step9纰哄畾Np銆丯s

    1> Np

    Np = Lp * 螖Ipp / (螖B* Ae) = 460*1.975 / (0.2*70.3) = 64.6 Ts

    鍥犺▓绠楃祼(ji茅)鏋滅偤鍒�?j菒n)?sh霉)鍖�,鑰冩叜鍏奸¨鍘�銆佸壇閭婄篂绲勫対鏁�(sh霉)鍙栨暣,浣胯畩澹撳櫒涓�銆佷簩娆＄篂绲勬湁鐩稿悓鐨勫畨鍖濆��,鏁呰��(di脿o)鏁� Np = 60Ts OR Np = 66Ts

    鑰冮噺鍦ㄨō(sh猫)瀹氬対鏁�(sh霉)姣攏鏅�,宸叉湁閵呮悕澧炲姞,鐐虹洝閲忓钩琛�Pfe鑸嘝cu,鍦ㄦ�ゅ厛閬� Np = 60 Ts.

    2> Ns

    Ns = Np / n = 60 / 6 = 10 Ts

    3> Nvcc

    姹傛瘡鍖濅紡鐗规暩(sh霉)Va Va = (Vo + Vf) / Ns = (19+0.6) / 10 = 1.96 V/Ts

    鈭� Nvcc = (Vcc + Vf) / Va =(12+1)/1.96=6.6

    Step10瑷堢畻AIR GAP

    lg = Np2*渭o*Ae / Lp = 602*4*3.14*10-7*70.3 / 0.46 = 0.69 mm

    Step11瑷堢畻绶氬緫dw

    1> dwp

    Awp = Iprms / J Iprms = Po / 畏 / VIN(min) = 60/0.83/107 = 0.676A

    Awp = 0.676 / 4 J鍙�4A / mm2 or 5A / mm2

    = 0.1 (鍙栁�0.35mm*2)

    2> dws

    Aws = Io / J = 3.16 / 4 (桅1.0 mm)

    閲忓彲绻炴�у強瓒ㄨ啔鏁堟噳(y墨ng),閲囩敤澶氱窔骞剁篂,鍠�绶氫笉鎳�(y墨ng)澶т簬桅0.4, 桅0.4涔婣w= 0.126mm2, 鍓� 0.79 (鍗砃s閲囩敤桅0.4 * 6)

    3> dwvcc Awvcc = Iv / J = 0.1 /4

    涓婅堪绻炵祫绶氬緫鍧囦互4A / mm2涔嬭▓绠�,浠ラ檷浣庨妳鎼�,鑻ョ祼(ji茅)妲�(g貌u)瑷�(sh猫)瑷堟檪绶氬寘閬庤儢,鍙�閬╃��(d膩ng)瑾�(di脿o)鏁碕涔嬪彇鍊�.

    4> 浼扮畻閵呯獥鍗犳湁鐜�.

    0.4Aw 鈮�Np*rp*蟺(1/2dwp)2 + Ns*rs*蟺(1/2dws)2 + Nvcc*rv*蟺(1/2dwv)2

    0.4Aw 鈮�60*2*3.14*(0.35/2)2+10*6*3.14+(0.4/2)2+7*3.14*(0.18/2)2

    鈮� 11.54 + 7.54 + 0.178 = 19.26

    0.4 * 125.3 = 50.12

    50.12 > 19.26 OK

    Step12浼扮畻鎼嶈��銆佹韩鍗�

    姹傚嚭鍚勭篂绲勪箣绶氶暦. 姹傚嚭鍚勭篂绲勪箣RDC鍜孯ac @100鈩� 姹傚悇绻炵祫涔嬫悕鑰楀姛鐜� 鍔犵附鍚勭篂绲勪箣鍔熺巼鎼嶈��(姹傚嚭Total鍊�) 濡� : Np = 60Ts , LP32/13BOBBIN绻炵窔骞冲潎鍖濋暦 4.33cm

    鍓� INP = 60*4.33 = 259.8 cm Ns = 10Ts

    鍓� INS = 10*4.33 = 43.3 cm

    Nvcc = 7Ts

    鍓� INvc = 7 * 4.33 = 30.31cm

    鏌ョ窔闃昏〃鍙�鐭� : 桅0.35mm WIRE RDC = 0.00268惟/cm @ 100鈩�

    桅0.40mm WIRE RDC = 0.00203 惟/cm @ 100鈩�

    桅0.18mm WIRE RDC = 0.0106 惟/cm @ 100鈩�

    R@100鈩� = 1.4*R@20鈩�

    姹傚壇閭婂悇闆绘祦鍊�. 宸茬煡Io = 3.16A.

    鍓�閭婂钩鍧囧嘲鍊奸浕娴� : Ispa = Io / (1-Dmax ) = 3.16 / (1- 0.52) = 6.583A

    鍓�閭婄洿娴佹湁鏁堥浕娴� : Isrms = 鈭氥��(1-Dmax)*I2spa銆� = 鈭�(1- 0.52)*6.5832 = 4.56A

    鍓�閭婁氦娴佹湁鏁堥浕娴� : Isac = 鈭�(I2srms - Io2) = 鈭�(4.562-3.162) = 3.29A

    姹傚師閭婂悇闆绘祦鍊� :

    鈭� Np*Ip = Ns*Is

    鍘熼倞骞冲潎宄板�奸浕娴� : Ippa = Ispa / n = 6.58 / 6 = 1.097A

    鍘熼倞鐩存祦鏈夋晥闆绘祦 : Iprms = Dmax * Ippa = 1.097 * 0.52 = 0.57A

    鍘熼倞浜ゆ祦鏈夋晥闆绘祦 : Ipac = 鈭欴*I2ppa = 1.097*鈭�0.52 = 0.79A

    姹傚悇绻炵祫浜�銆佺洿娴侀浕闃�.

    鍘熼倞 : RPDC = ( lNp * 0.00268 ) / 2 = 0.348惟

    Rpac = 1.6RPDC = 0.557惟

    鍓�閭� : RSDC = ( lNS*0.00203 ) /6 = 0.0146惟

    Rsac = 1.6RSDC = 0.0243惟

    Vcc绻炵祫 : RDC =30.31*0.0106 = 0.321惟

    瑷堢畻鍚勭篂绲勪氦鐩存祦鎼嶈��:

    鍓�閭婄洿娴佹�� : PSDC = Io2RSDC = 3.162 * 0.0146 = 0.146W

    浜ゆ祦鎼� : Psac = I2sac*Rsac = 3.292*0.0234 = 0.253W

    Total : Ps = 0.146 + 0.253 = 0.399 W

    鍘熼倞鐩存祦鎼� : PPDC = Irms2RPDC = 0.572 * 0.348 = 0.113W

    浜ゆ祦鎼� : Ppac = I2pac*Rpac = 0.792*0.557 = 0.348W

    蹇界暐Vcc绻炵祫鎼嶈��(鍥犲叾闆绘祦鐢氬皬) Total Pp = 0.461W

    绺界殑绶氬湀鎼嶈�� : Pcu = Pc + Pp = 0.399 + 0.461 = 0.86 W

    2> 瑷堢畻閻垫悕 PFe

    鏌�TDK DATA BOOK鍙�鐭�PC44鏉愪箣鈻矪 = 0.2T 鏅�,Pv = 0.025W / cm2

    LP32 / 13涔媀e = 4.498cm3

    PFe = Pv * Ve = 0.025 * 4.498 = 0.112W

    Ptotal = Pcu + PFe = 0.6 + 0.112 = 0.972 W 浼扮畻婧�鍗� 鈻硉 渚濈稉(j墨ng)椹楀叕寮� 鈻硉 = 23.5P危/鈭欰p = 23.5 * 0.972 / 鈭�0.88 = 24.3 鈩�

    浼扮畻涔嬫韩鍗団柍t灏忎簬SPEC,瑷�(sh猫)瑷圤K.

    Step13绲�(ji茅)妲�(g貌u)瑷�(sh猫)瑷�

    鏌�LP32 / 13 BOBBIN涔嬬篂绶氬箙瀵�鐐� 21.8mm.

    鑰冮噺瀹夎��(gu墨)璺濋洟涔嬫部闈㈣窛闆�涓嶅皬浜�6.4mm.

    鐐烘笡灏廘K鎻愰珮鏁堢巼,閲囩敤涓夋槑娌荤祼(ji茅)妲�(g貌u),鍏剁祼(ji茅)妲�(g貌u)濡備笅 :

    X'FMR绲�(ji茅)妲�(g貌u) :