鑰孮鐨勫€掓暩(sh霉)灏辨槸鑱炲悕閬愰倗鐨則an(未)锛屼篃灏辨槸tan(未)=ESR/Xc銆�銆傘€備簬鏄箮锛孍SR瓒婂ぇ锛宼an(未)灏�
瓒婂ぇ锛屾氮璨�(f猫i)闆昏秺澶氥€�
濂藉惂锛岃€冩叜ESR灏嶆垜鍊戣ō(sh猫)瑷�(j矛)鏈変粈涔堢敤鍛紵鐪嬩笅闈竴娈佃┍锛�
涓绘澘涓婄殑姣忓€�(g猫)闆诲锛岃ō(sh猫)瑷�(j矛)鏅�(sh铆)涓€鑸槸鎸夋渶澶氳矤(f霉)杓夋檪(sh铆)鐨勫伐浣滄儏娉佷締瑷�(sh猫)瑷�(j矛)鐨�锛屽洜姝�锛屽湪澶у鏁�(sh霉)鎯呮硜涓�锛屽彧
瑕佹洿鎻涘拰鍘熼浕瀹瑰弮鏁�(sh霉)鍊肩浉绛夌殑闆诲鍗冲彲锛岀暥(d膩ng)鐒�锛屽鏋滆拷姹傝秴闋绘€ф垨绌�(w臎n)瀹氭€э紝鍙互閬╃暥(d膩ng)鎻愰珮涓€浜�銆侫T
TENTION锛侀€欓噷鏈夊€�(g猫)瑾ゅ崁(q奴)锛氬師鍙冩暩(sh霉)鍊兼寚鐨勪富瑕佹槸浠€涔�锛熷ぇ澶氭暩(sh霉)浜哄彲鑳戒互鐐烘槸闆诲鐨勫閲忋€傚叾瀵�(sh铆)浣犻尟(cu貌)
浜�銆傚湪楂橀牷闁嬮棞(gu膩n)闆绘簮涓�锛屾焙瀹氶浕瀹瑰彇鍊肩殑涓昏鍙冩暩(sh霉)鏄€愬鍙奅SR锛堢瓑鏁堜覆鑱�(li谩n)闆婚樆锛夛紝鑰屼笉鏄閲�銆�
闆诲鐨勫閲忥紝鍙湪淇¤櫉(h脿o)鐧�(f膩)鐢�銆侀珮閫氥€佷綆閫�銆佸付閫氱瓑骞鹃闆昏矾涓湁鎰忕京锛岃€屽湪婵炬尝鏂归潰骞舵矑璧峰澶т綔
鐢ㄣ€傞浕婧愮殑绌�(w臎n)瀹氭€�锛屼富瑕侀珨鐝�(xi脿n)鍦ㄧ磱娉㈤浕澹撶殑澶у皬锛屼竴鑸儏娉侊紝CPU鐨勪緵闆昏姹傚湪杓稿嚭鏈€澶氳矤(f霉)杓夐浕娴佹檪(sh铆)
锛岀磱娉㈤浕澹撲綆浜�100mV锛屾渶澶氳矤(f霉)杓夐浕娴佸彲浠ラ€欐ǎ瑷�(j矛)绠楋細
鍋囧鏌怌PU鐨勬渶澶氬姛鑰楃偤90W锛屾牳蹇冮浕澹撶偤1.5V锛岄偅涔堟渶澶氳矤(f霉)杓夐浕娴佺偤锛�90W/1.5V=60A
鍋囪ō(sh猫)鏈€澶氱磱娉㈤浕澹撶偤100mV,鍓囪姹傞浕瀹圭殑ESR鍊�:ESR 锛� 100mV/60A=1.66m惟
閫欐ǎ鐨勫晩锛屽鏋滄垜鍊戦伕鐢∟CC鐨凨ZG绯诲垪1500uF/6.3V鐨勯浕瀹逛締鍋氭烤娉�锛屾煡PDF鏂囨獢寰楃煡,瑭查浕瀹圭殑ESR
鍊硷紳26 m惟,閫欐ǎ灏辫嚦灏戦渶瑕�16鍙浕瀹�(26 m惟/16=1.625 m惟)鎵嶈兘鍕濅换婵炬尝鐨勫伐浣滐紱濡傛灉鏀圭偤KZG
绯诲垪3300uF/6.3V鐨�锛屽叾ESR鍊�=12 m惟锛岄偅涔堝彧闇€瑕�8鍙浕瀹瑰嵆鍙�(12 m惟/8=1.5 m惟)锛� 濡傛灉閬哥敤
NCC鐨凱S绯诲垪鍥洪珨闆诲鏈�(hu矛)鎬庝箞妯e憿锛�2.5V/1500uF鐨�锛屾煡PDF鏂囨獢寰楃煡锛屽叾ESR鍊肩偤8m惟,4V/820uF鐨�
ESR鍚屾ǎ鐐�8 m惟锛屽洜?y脿n)闀働U鐨勬牳蹇冮浕澹撳儏鐐�1.5V锛屾墍浠ラ€欏叐娆鹃浕瀹瑰潎鑳藉嫕浠�锛岀稉(j墨ng)瑷�(j矛)绠�锛屽彧闇€5鍙浐楂�
闆诲鍗冲彲鍕濅换姝ゅ伐浣�銆�(8 m惟/5=1.6 m惟)銆傜従(xi脿n)鍦ㄧ煡閬�锛岀偤浠€涔堣€佸紡鐨勪富鏉块噰鐢ㄤ笂鍗僽F鐨勯媮闆昏В闆诲锛�
鑰屾柊寮忕殑涓绘澘鍙噰鐢ㄥ咕鐧緐F鐨勫浐楂旈浕瀹逛簡鍚с€備篃鐭ラ亾锛岀偤浠€涔堟湁鏅�(sh铆)鎻涗簡姣斿師瀹归噺澶у咕鍊嶇殑锛屼粛鐒朵笉鑳�
淇濊瓑绯荤当(t菕ng)绌�(w臎n)瀹氱殑鐪熸鍘熷洜浜嗗惂.
鐪嬪畬閫欐鏂囩珷锛屾垜鎯冲ぇ瀹朵篃鑳藉?y脿n)妯界害鏃遍椆闈兼毠x鎿囧悎閬╃殑闆诲浜嗗惂锛堝彧瑕佽€愬澶т簬渚涢浕闆诲锛� ESR灏�
浜庡師闆诲鐨勬(bi膩o)绋卞€煎嵆鍙紝瀹归噺澶у皬鏄笉闇€鑰冩叜鐨勭殑銆傦級
鎬庢ǎ鐞嗚В涓婇潰鐨勫晱椤屽憿锛熸垜鍊戝啀鑸変竴鍊�(g猫)渚嬪瓙锛�
渚嬪锛屽叐椤嗗姛鑰楀悓妯f槸70W鐨凜PU锛屽墠鑰呴浕澹撴槸3.3V锛屽悗鑰呴浕澹撴槸1.8V銆傞偅涔�锛�
鍓嶈€呯殑闆绘祦灏辨槸I=P/U=70W/3.3V澶х磩鍦�21.2A宸﹀彸銆傝€屽悗鑰呯殑闆绘祦灏辨槸I=P/U=70W/1.8V=38.9A锛�
閬�(d谩)鍒颁簡鍓嶈€呯殑杩戜竴鍊�銆傚湪閫氶亷闆诲鐨勯浕娴佽秺渚嗚秺楂樼殑鎯呮硜涓�锛屽亣濡傞浕瀹圭殑ESR鍊间笉鑳戒繚鎸佸湪涓€鍊�(g猫)杓�
灏忕殑鑼冨湇锛岄偅涔堝氨鏈�(hu矛)鐢�(ch菐n)鐢熸瘮浠ュ線鏇撮珮鐨勭磱娉㈤浕澹擄紙ripple voltage) 锛堢悊鎯崇殑杓稿嚭鐩存祦闆诲鎳�(y墨ng)瑭�
鏄竴姊濇按骞崇窔锛岃€岀磱娉㈤浕澹撳墖鏄按骞崇窔涓婄殑娉㈠嘲鍜屾尝璋凤級銆傚皪浜�3.3V鐨凜PU鑰岃█锛�0.2V婕f尝闆诲鎵€
鍗犳瘮渚嬭純灏忥紝閭勪笉瓒充互褰㈡垚鑷村懡鐨勫奖闊�锛屼絾鏄皪浜�1.8V鐨凜PU鑰岃█锛屽悓妯f槸0.2V鐨勭磱娉㈤浕澹�锛屽叾鎵€
鍗犵殑姣斾緥灏辫冻浠ラ€犳垚鏁�(sh霉)瀛楅浕璺殑鍒ゆ柗澶辫銆�
閭g磱娉㈤浕澹擄紙闆绘祦锛夊拰ESR鏈夊槢闂�(gu膩n)绯伙紵
Ur=ESR*Ir
鑰屽湪闁嬮棞(gu膩n)闆绘簮杓稿嚭绔�锛岄毃钁楅枊闂�(gu膩n)闋荤巼鐨勪綆鍒伴珮绱嬫尝闆绘祦涓€鑸槸璨�(f霉)杓夐浕娴佺殑20锛厏40%銆傚鏋滆矤(f霉)杓�8A鏅�(sh铆)锛�
绱嬫尝闆绘祦鎳�(y墨ng)瑭叉槸1.6~3.2A銆傚柈椤嗛浕瀹圭殑绱嬫尝鐗瑰畾婧害闋荤巼涓嬮浕娴佸弮鏁�(sh霉)鏄�1锝�2A銆傛墍浠�8A鐨勮矤(f霉)杓夎鏈�3
椤嗛浕瀹瑰苟鑱�(li谩n)銆�
灏嶄簬闆诲鐨勭磱娉㈤浕娴佽窡闋荤巼鍜屾韩搴︽湁闂�(gu膩n)绯�锛屼竴鑸浕瑙i浕瀹归兘鏈変竴鍊�(g猫)闋荤巼鍜屾韩搴︾殑绱嬫尝闆绘祦瑁�(b菙)鍎熺郴鏁�(sh霉)銆�
鎵€浠ュ湪杓冮珮婧害涓嬬磱娉㈤浕娴佹渻(hu矛)娓涘皬锛岃純楂橀牷鐜囦笅锛岀磱娉㈤浕娴佹渻(hu矛)澧炲姞銆�
闆诲鐨凲鍊艰▓(j矛)绠楁柟娉曠偤锛歈=Xc/R銆傚叾涓璛c=1/wc=1/锛�2*pi*f*c锛夛紝R鐐篍SR銆�
鏄庨’鐨凴澧炲ぇ锛孮鏄笡灏忕殑銆�
闆诲鐨勫閲忥紝鍙湪淇¤櫉(h脿o)鐧�(f膩)鐢�銆侀珮閫氥€佷綆閫�銆佸付閫氱瓑骞鹃闆昏矾涓湁鎰忕京锛岃€屽湪婵炬尝鏂归潰骞舵矑璧峰澶т綔鐢�銆傞浕婧愮殑绌�(w臎n)瀹氭€э紝涓昏楂旂従(xi脿n)鍦ㄧ磱娉㈤浕澹撶殑澶у皬锛屼竴鑸儏娉侊紝CPU鐨勪緵闆昏姹傚湪杓稿嚭鏈€澶氳矤(f霉)杓夐浕娴佹檪(sh铆)锛岀磱娉㈤浕澹撲綆浜�100mV锛屾渶澶氳矤(f霉)杓夐浕娴佸彲浠ラ€欐ǎ瑷�(j矛)绠楋細
鍋囧鏌怌PU鐨勬渶澶氬姛鑰楃偤90W锛屾牳蹇冮浕澹撶偤1.5V锛岄偅涔堟渶澶氳矤(f霉)杓夐浕娴佺偤锛�90W/1.5V=60A
鍋囪ō(sh猫)鏈€澶氱磱娉㈤浕澹撶偤100mV,鍓囪姹傞浕瀹圭殑ESR鍊�:ESR 锛� 100mV/60A=1.66m惟