ç¹ç¹
2 Cå 1/4容æ¥å£
V OUT1 = 1Vè³2Vï1/4å ̈50 mVçæ¥
V OUT2 = 1.8Vè³3.3V以100 mV级
èªå ̈PFM / PWMæ ̈¡å1/4åæ¢åå1/4ºå¶PWMä1/2åªé³è¿è¡æ ̈¡å1/4
©æ é ¢ è 1 / 2åï 1 / 4ä1 / 2 ¿ç ̈I 2 å1/2æ
æ ̄éé600 mAçè'è1/21/2
2 MHzçPWMåºå®å1/4å ³é¢çï1/4å ̧åå1/4ï1/4
é«æççå é ̈åæ¥æ'æμ
å é ̈è1/2 ̄å ̄å ̈
ä ̧μå¤ä1/2åè1/2ï1/4ä ̧¤è· ̄è3/4åº
2.7 فولت ≤ فولت في ≤ 5.5 فولت
å·¥ä1/2ä»ä ̧ä ̧ªåä ̧çé离åçμæ± æ3èéæ°¢/ééçμæ± å3.3V/5.5Våºå®å ̄1/4è1/2 ̈
2.2μHçμæå ̈ï1/44.7μFçè3/4å ¥æ ̄ééå10μFè3/4åºçμ容
16å1/4èçLLPå°è£ ï1/44æ ̄«ç±³x 5æ ̄«ç±³× 0.8æ ̄«ç±³ï1/4
20ççmicro SMDå°è£ ï1/43.0æ ̄«ç±³× 2.0æ ̄«ç±³× 0.6æ ̄«ç±³ï1/4
è ̄'æ
LM3370æ ̄ä ̧ä ̧ªåè· ̄ï1/4éååDC - DCè1/2¬æ¢å ̈ï1/4ä»ä ̧ä ̧ªåä ̧çé离åçμæ± ï1/4èå'ä»2.7Vè³5.5Vè3/4å ¥è1/2 ̈ä3/4çμçè¶ ä1/2çμåçμè· ̄ä1/4åã ®å æä3/4äº600æ ̄«å®çè'è1/21/2ï1/4æ ̄ééçä ̧¤ä ̧ªè3/4åºã è3/4åºçμåååèå'ä»1Vå°3.3Vï1/4并å ̄以å ̈æå°æ§å¶ä1/2¿ç ̈I 2 Cå 1/4容æ¥å£ã è¿ç§å ̈æçμåç1/4©æ3/4åè1/2ï1/4å è® ̧å¤çå ̈æ¥å®ç°æé«çæ§è1/2åèæä1/2çæ°'å¹³ã æ 2 Cå 1/4容æ¥å£ä¹å ̄以ç ̈æ¥æ§å¶èªå ̈PFM-PWM/PWMæ ̈¡å1/4çéæ©Åå ¶ä»æ§è1/2Å¢å1/4ºç¹æ§ã
LM3370æä3/4äºä1/4è¶çæ§è1/2åå¤æççμæºç®¡çè¦æ±çä3/4¿æºå1/4ç³»ç»çæ§çè1/2ã æºè1/2PWMä1/2åªé³åPFMä1/2çμæμæ ̈¡å1/4ä¹é'èªå ̈åæ¢ï1/4æä3/4æ¹åçç³»ç»æçã å é ̈åæ¥æ'æμæé«äºè1/2¬æ¢å ̈çæçï1/4没æè¿ä ̧æ¥çå¤é ̈è®3/4å¤çä1/2¿ç ̈ã
æä ̧ä ̧ªä ̧çμå¤ä1/2åè1/2ï1/4æ3/4示å ̈çè3/4åºçμåæ°'å¹³ï1/4以é¿å æå¤æçμæ失ã ç¬ç«å ̄¹æ ̄ä ̧ªè3/4åºä1/2¿è1/2å1/4èï1/4å ̄以ç®åèææççμæºæåºã
LM3370æ ̄4æ ̄«ç±³ï1/45æ ̄«ç±³16å1/4èéæå1/4LLPå20çççmicro SMDï1/43.0æ ̄«ç±³× 2.0æ ̄«ç±³× 0.6æ ̄«ç±³ï1/4å è£ ã é«å1/4å ³é¢ç2å èμ«ï1/4å ̧åå1/4ï1/4å è® ̧ä1/2¿ç ̈å3/4®å°çè¡ ̈é¢è'è£ å 件ï1/4å æ¬2.2μHçμæå ̈ã
é»è®¤ä ̧º2è3/4åºçμåç»åçåºå®çμåå ̄å®å¶ï1/4以éåºç³»ç»çè¦æ±ï1/4ç±å1/2家åå ̄1/4ä1/2å ¬å ̧èç³»ã
åºç ̈
źå ̧¦å¤çå ̈
źç ̈å¤çå ̈ï1/4è§é¢ï1/4é³é¢ï1/4
أنا / Oçμæº
FPGAçμæºåCPLD