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<p><a href="http://www.chenfeipower.com/"><strong>开关电æºå˜åŽ‹å™¨</strong></a>ä¸åŒ…å«æœ‰é«˜é¢‘ä¿¡å·ï¼ŒPCB上任何å°åˆ¶çº¿éƒ½å¯ä»¥èµ·åˆ°å¤©çº¿çš„作用，å°åˆ¶çº¿çš„长度和宽度会影å“其阻抗和感抗， 从而影å“频率å“应。å³ä½¿æ˜¯é€šè¿‡ç›´æµä¿¡å·çš„å°åˆ¶çº¿ä¹Ÿä¼šä»Žé‚»è¿‘çš„å°åˆ¶çº¿è€¦åˆåˆ°å°„频信å·å¹¶é€ æˆç”µè·¯é—®é¢˜ï¼ˆç”šè‡³å†æ¬¡è¾å°„出干扰信å·ï¼‰ã€‚å› æ¤åº”将所有通过交æµç”µæµçš„å°åˆ¶çº¿è®¾è®¡å¾—å°½å¯èƒ½çŸè€Œå®½ï¼Œè¿™æ„味ç€å¿…须将所有连接到å°åˆ¶çº¿å’Œè¿žæŽ¥åˆ°å…¶ä»–电æºçº¿çš„元器件放置得很近ã€?br />
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å°åˆ¶çº¿çš„长度与其表现出的电感é‡å’Œé˜»æŠ—æˆæ£æ¯”，而宽度则与å°åˆ¶çº¿çš„电感é‡å’Œé˜»æŠ—æˆå比。长度åæ˜ å‡ºå°åˆ¶çº¿å“应的波长ï¼?长度越长ï¼?å°åˆ¶çº¿èƒ½å‘é€å’ŒæŽ¥æ”¶ç”µç£æ³¢çš„频率越低ï¼?它就能è¾å°„出更多的射频能é‡ã€‚æ ¹æ®å°åˆ¶çº¿è·¯æ¿ç”µæµçš„大å°ï¼Œ å°½é‡åŠ 租电æºçº¿å®½åº¦ï¼Œ å‡å°‘环路电阻。åŒæ—¶ã€ä½¿ç”µæºçº¿ã€åœ°çº¿çš„èµ°å‘和电æµçš„æ–¹å‘一致， è¿™æ ·æœ‰åŠ©äºŽå¢žå¼ºæŠ—å™ªå£°èƒ½åŠ›ã€?br />
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接地是开关电æºå››ä¸ªç”µæµå›žè·¯çš„底层支路ï¼?作为电路的公共å‚考点起ç€å¾ˆé‡è¦çš„作用ï¼?它是控制干扰的é‡è¦æ–¹æ³•ã€?br />
å› æ¤ï¼Œåœ¨å¸ƒå±€ä¸åº”仔细考虑接地线的放置，将å„ç§æŽ¥åœ°æ··åˆä¼šé€ æˆç”µæºå·¥ä½œä¸ç¨³å®šã€?br />
进行全局布线的时候， 还须éµå¾ªä»¥ä¸‹åŽŸåˆ™ï¼?br />
ï¼? ）布线方å‘： 从焊接é¢çœ‹ï¼Œ 元件的排列方ä½å°½å¯èƒ½ä¿æŒä¸ŽåŽŸç†å›¾ç›¸ä¸€è‡´ï¼Œå¸ƒçº¿æ–¹å‘最好与电路图走线方å‘相一致， å› ç”Ÿäº§è¿‡ç¨‹ä¸é€šå¸¸éœ€è¦åœ¨ç„ŠæŽ¥é¢è¿›è¡Œå„ç§å‚æ•°çš„æ£€æµ‹ï¼Œæ•…è¿™æ ·åšä¾¿äºŽç”Ÿäº§ä¸çš„检查，调试åŠæ£€ä¿®ï¼ˆæ³¨ï¼šæŒ‡åœ¨æ»¡è¶³ç”µè·¯æ€§èƒ½åŠæ•´æœºå®‰è£…与é¢æ¿å¸ƒå±€è¦æ±‚çš„å‰æ下）ã€?br />
ï¼? ）设计布线图时走线尽é‡å°‘æ‹å¼¯ï¼?å°åˆ·å¼§ä¸Šçš„线宽ä¸è¦çªå˜ï¼Œ 导线æ‹è§’åº?ge;90度， 力求线æ¡ç®€å•æ˜Žäº†ã€?br />
ï¼? ）å°åˆ·ç”µè·¯ä¸ä¸å…许有交å‰ç”µè·¯ï¼?对于å¯èƒ½äº¤å‰çš„线æ¡ï¼Œ å¯ä»¥ç”?ldquo;é’?rdquo;ã€?ldquo;ç»?rdquo;两ç§åŠžæ³•è§£å†³ã€‚å³è®©æŸå¼•çº¿ä»Žåˆ«çš„电阻ã€ç”µå®¹ã€ä¸‰æžç®¡è„šä¸‹çš„空隙处“é’?rdquo;过去ï¼?或从å¯èƒ½äº¤å‰çš„æŸæ¡å¼•çº¿çš„一ç«?ldquo;ç»?rdquo;过去ï¼?在特殊情况下如何电路很å¤æ‚， 为简化设计也å…许用导线跨接， 解决交å‰ç”µè·¯é—®é¢˜ã€‚å› é‡‡ç”¨å•é¢æ¿ï¼Œ ç›´æ’元件ä½äºŽto p é¢ï¼Œè¡¨è´´å™¨ä»¶ä½äºŽbottom é¢ï¼Œæ‰€ä»¥åœ¨å¸ƒå±€çš„时候直æ’器件å¯ä¸Žè¡¨è´´å™¨ä»¶äº¤å ， 但è¦é¿å…焊盘é‡å ã€?br />
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以上就是为大家总结的关于如何对开关电æºå˜åŽ‹å™¨å¦‚何布线，布线应该éµå¾ªçš„原则的介ç»ï¼Œå¸Œæœ›å¯ä»¥å¸®åˆ°å¤§å®¶ï¼Œå¦‚果还想了解更多的高频å˜åŽ‹å™¨çš„内容，那就点击高频å˜åŽ‹å™¨èµ„讯å§ã€?/p>
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