问3842,8脚电压只有1伏是什么故障怎么排除? 电动车充电器通电量3842的七脚电压有12伏左右,八脚有一伏...

UC3842\u76848\u811a\u63a5\u7684\u706f\u4e00\u76f4\u95ea\u70c1\uff0c8\u811a\u8f93\u51fa\u7684\u4e5f\u4e0d\u662f5v

\u5728\u56fd\u5185\u7535\u5b50\u8bbe\u5907\u5f53\u4e2d\uff0c\u7535\u6e90PWM\u63a7\u5236\u7535\u8def\u6700\u5e38\u7528\u7684\u96c6\u6210\u7535\u8def\u578b\u53f7\u5c31\u662fUC3842\uff08\u6216KA3842\uff09\u3002\u4e5f\u5c31\u662f\u56e0\u4e3a\u5e38\u5e38\u9047\u5230\uff0c\u5bf9\u5b83\u4e5f\u6709\u4e00\u4e9b\u4e4b\u5f97\uff0c\u4e0b\u9762\u7b80\u5355\u4ecb\u7ecd\u4e00\u4e0bUC3842\u597d\u574f\u7684\u5224\u65ad\u65b9\u6cd5\uff1a
\u5728\u66f4\u6362\u5b8c\u5468\u8fb9\u635f\u574f\u7684\u5143\u4ef6\u540e\uff0c\u5148\u4e0d\u88c5\u5f00\u5173\u7ba1(MOSFET)\uff0c\u52a0\u7535\u6d4b\u91cfUC3842\u76847\u811a\u7535\u538b\uff0c\u82e5\u7535\u538b\u572810-17V\u95f4\u6ce2\u52a8\uff0c\u5176\u4f59\u5404\u811a\u4e5f\u5206\u522b\u6709\u6ce2\u52a8\u7684\u7535\u538b\uff0c\u5219\u8bf4\u660e\u7535\u8def\u5df2\u8d77\u632f\uff0cUC3842\u57fa\u672c\u6b63\u5e38;\u82e57\u811a\u7535\u538b\u4f4e\uff0c\u5176\u4f59\u63a5\u811a\u65e0\u7535\u538b\u6216\u4e0d\u6ce2\u52a8\uff0c\u5219UC3842\u5df2\u635f\u574f\u3002
\u5728UC3842\u76847\u30015\u811a\u95f4\u5916\u52a0+17V\u5de6\u53f3\u7684\u76f4\u6d41\u7535\u538b\uff0c\u82e5\u6d4b8\u811a\u6709+5V\u7535\u538b\uff0c1\u30012\u30014\u30016\u811a\u4e5f\u6709\u4e0d\u540c\u7684\u7535\u538b\uff0c\u5219UC3842\u57fa\u672c\u6b63\u5e38\uff0c\u5de5\u4f5c\u7535\u6d41\u5c0f\uff0c\u81ea\u8eab\u4e0d\u6613\u635f\u574f\uff0e\u5b83\u635f\u574f\u7684\u6700\u5e38\u89c1\u539f\u56e0\u662f\u7535\u6e90\u5f00\u5173\u7ba1(MOSFET)\u77ed\u8def\u540e\uff0c\u9ad8\u7535\u538b\u4eceG\u6781\u52a0\u5230\u51766\u811a\u800c\u81f4\u4f7f\u5176\u70e7\u6bc1\uff0e\u800c\u6709\u4e9b\u673a\u578b\u4e2d\u7701\u53bb\u4e86G\u6781\u63a5\u5730\u7684\u4fdd\u62a4\u4e8c\u6781\u4f53\uff0c\u5219\u7535\u6e90\u5f00\u5173\u7ba1(MOSFET)\u635f\u574f\u65f6\uff0cUC3842\u548cG\u6781\u5916\u63a5\u7684\u9650\u6d41\u7535\u963b\u5fc5\u574f\uff0e\u6b64\u65f6\u76f4\u63a5\u66f4\u6362\u5373\u53ef\u3002
\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u7535\u6e90\u5f00\u5173\u7ba1\u6e90\u6781\uff08S\u6781\uff09\u901a\u5e38\u63a51\u4e2a\u5c0f\u963b\u503c\u3001\u5927\u529f\u7387\u7684\u7535\u963b\u4f5c\u4e3a\u8fc7\u6d41\u4fdd\u62a4\u68c0\u6d4b\u7535\u963b\uff0e\u6b64\u7535\u963b\u7684\u963b\u503c\u4e00\u822c\u57280.2-0.6\u4e4b\u95f4\uff0c\u5927\u4e8e\u6b64\u503c\u4f1a\u51fa\u73b0\u5e26\u4e0d\u8d77\u8d1f\u8f7d\u7684\u73b0\u8c61\uff08\u5c31\u662f\u6b21\u6781\u7535\u538b\u504f\u4f4e\uff09\u3002
\u7531\u4e8eUC3842\uff08KA3842\uff09\u7684\u5de5\u4f5c\u7535\u538b\u548c\u8f93\u51fa\u529f\u7387\u5747\u4e0eUC3843\uff08KA3843\uff09\u76f8\u5dee\u751a\u8fdc\uff0c 3842\u7cfb\u5217\u548c3843\u7cfb\u5217\u5728\u542f\u52a8\u7535\u538b\u548c\u5173\u95ed\u7535\u538b\u65b9\u9762\u4e5f\u5b58\u5728\u7740\u8f83\u5927\u7684\u533a\u522b.\u524d\u8005\u7684\u542f\u52a8\u7535\u538b\u4e3a16V\uff0c\u5173\u95ed\u7535\u538b\u4e3a10V;\u540e\u8005\u7684\u542f\u52a8\u7535\u538b\u4e3a8.5V\uff0c\u5173\u95ed\u7535\u538b\u4e3a7.6V\u3002\u8fd9\u4e24\u4e2a\u7cfb\u5217\u7684IC\u4e0d\u80fd\u76f4\u63a5\u4ee3\u6362\u3002\u5982\u786e\u6709\u5fc5\u8981\u7528\u540e\u8005\u4ee3\u6362\u524d\u8005\u65f6\uff0c\u8981\u5bf9\u7535\u8def\u52a0\u4ee5\u6539\u9020\u65b9\u53ef\u3002

\u521d\u7ea7\u6709300\u4f0f\u53ea\u80fd\u8bf4\u6574\u6d41\u90e8\u5206\u597d\u7684, \u4e03\u811a\u7535\u538b\u670912\u4f0f\u5de6\u53f3,\u4e0d\u5bf9,\u6b63\u5e38\u5e94\u8be520\u591aV ,,\u5148\u628a3842\u5468\u56f4\u53ca\u672c\u8eab\u5f04\u597d,\u4fdd\u8bc1\u6b63\u5e38\u8d77\u632f\u624d\u884c,\u518d\u67e5\u53d8\u538b\u5668\u540e\u6781,\u529e\u6cd5\u662f,\u628a\u5f00\u5173\u7ba1\u5378\u6389,\u4fdd\u9669\u6362\u6210100W\u706f\u70ae,\u901a\u7535,\u6d4b3842\u7b2c6\u811a,\u548c\u7b2c7\u811a,\u5fc5\u987b\u67092V\u548c12V\u5de6\u53f3\u7535\u538b\u6ce2\u52a8,\u624d\u80fd\u8bc1\u660e\u6b63\u5e38\u8d77\u632f,\u4f60\u7684\u95ee\u9898\u57283842\u8fd9\u5757

断电,再切断功率管供电,3842的7脚与地外接16~20V之间直流电压,8脚应该有5V基准电压,没有就是芯片坏。

  • 闂3842,8鑴氱數鍘嬪彧鏈1浼忔槸浠涔堟晠闅滄庝箞鎺掗櫎?
    绛旓細鏂數锛屽啀鍒囨柇鍔熺巼绠′緵鐢碉紝3842鐨7鑴氫笌鍦板鎺16锝20V涔嬮棿鐩存祦鐢靛帇锛8鑴搴旇鏈5V鍩哄噯鐢靛帇锛屾病鏈夊氨鏄姱鐗囧潖銆
  • 鐢靛姩杞﹀厖鐢靛櫒UC3842,7鑴氱數鍘涓13v銆8鑴鏃犵數鍘嬫槸浠涔堝師鍥
    绛旓細鍏呯數鍣ㄨ緭鍏ュ紑璺垨鑰呭紑鍏崇數璺笉鑳藉伐浣溿傜敤鎴锋洿鎹㈠厖鐢靛櫒鍗冲彲銆傝嫢鍏呯數鍣ㄦ棤杈撳嚭锛屽彲浠ユ牴鎹數婧愭寚绀虹伅鐨勫彂鍏夌姸鍐靛垽鏂晠闅滈儴浣嶃傝繖绉嶇數鍔ㄨ溅鍏呯數鍣ㄧ淮淇垎涓ょ鎯呭喌锛岀數鍔ㄨ溅濡傛灉鐢垫簮鎸囩ず鐏笉浜紝璇存槑鍏呯數鍣ㄨ緭鍏ュ紑璺垨鑰呭紑鍏崇數璺笉鑳藉伐浣溿傚鏋滅數婧愭寚绀虹伅鍙戝厜姝e父锛岃屽厖鐢垫寚绀虹伅涓嶄寒鎴栧厖鐢垫寚绀虹伅鍦ㄦ帴鍏ョ數姹犳椂涓嶅彉鑹诧紝璇存槑楂...
  • 鐢靛姩杞﹀厖鐢靛櫒涓璘C3842B鍚鑴氱數鍘嬫槸澶氬皯?
    绛旓細1鑴氾細璇樊鏀惧ぇ鍣ㄨˉ鍋匡紙璇樊杈撳嚭锛夛紱 鐢靛帇锛2.8V 2鑴氾細鍙嶉杈撳叆锛堣宸俊鍙疯緭鍏ワ級 锛 鐢靛帇锛2.6V 3鑴氾細寮鍏崇鐢垫祦妫娴嬶紙杩囨祦淇濇姢锛夛紱 鐢靛帇锛0.08V 4鑴氾細澶栨帴RC瀹氭椂鍏冧欢锛 鐢靛帇锛0.9V 5鑴氾細鍦扮嚎锛 鐢靛帇锛0V 6鑴氾細寮鍏崇椹卞姩鑴夊啿杈撳嚭锛 鐢靛帇锛1.3V 7鑴氾細鐢垫簮锛 鐢靛帇锛15---17V 8鑴氾細5...
  • 鐢靛姩杞﹀厖鐢靛櫒涓璘C3842B鍚鑴氱數鍘嬫槸澶氬皯?
    绛旓細涓鑸负10-30V涔嬮棿銆7涓虹數婧愯剼锛20v灞炴甯稿笺備竴鑸儏鍐碉紝鐩存帴鎹涓涓3842锛纭繚mos娌℃湁鍑荤┛锛屾柇寮鏍呮瀬锛岄氱數锛屼竾鐢ㄨ〃娴嬭瘯3842鐨6鑴氭湁鎽嗗姩鐨鐢靛帇鍩烘湰灏卞彲浠ヤ簡銆俇C3842B鍚勮剼宸ヤ綔鐢靛帇濡備笅:1鑴COMP-OUT锛3.5V锛2鑴 FB(-)IN锛2.5V锛3鑴 LSNS-IN锛0.5mV锛4鑴 RT/CT锛2.4V锛5鑴 GND锛0V锛6鑴 ...
  • 寮鍏崇數婧愭槸浠涔堝師鍥犲紩璧3842鍏剼鏃5V鐢靛帇鍛?842宸叉洿鎹㈣繃?鍝綅澶т緺缁...
    绛旓細3842鐨勫惎鍔ㄧ數鍘嬫槸16V锛岀數婧愯剼锛7鑴氾級鐢靛帇鏈揪鍒拌繖涓數鍘嬪硷紝瀹冧笉浼氬惎鍔ㄨ繘鍏ュ伐浣滅姸鎬锛8鑴渚挎棤5V鍩哄噯鐢靛帇銆傚綋7鑴氱數鍘杈惧埌16V锛3842鍚姩涔嬪悗锛7鑴氱數鍘嬪彲浠ラ檷鍒10V鑰屼笉褰卞搷鍏舵甯稿伐浣滐紝杩欐椂8鑴氬潎鏈5V鍩哄噯鐢靛帇杈撳嚭銆
  • UC3842姝e父宸ヤ綔鏃剁殑鐢靛帇鏄澶氬皯
    绛旓細UC3842 閲囩敤鍥哄畾宸ヤ綔棰戠巼鑴夊啿瀹藉害鍙帶璋冨埗鏂瑰紡锛屽叡鏈8 涓紩鑴氾紝鍚勮剼鍔熻兘濡備笅锛1銆佽剼鏄宸斁澶у櫒鐨勮緭鍑虹锛屽鎺ラ樆瀹瑰厓浠剁敤浜庢敼鍠勮宸斁澶у櫒鐨勫鐩婂拰棰戠巼鐗规э紱2銆佽剼鏄弽棣堢數鍘嬭緭鍏ョ锛屾鑴氱數鍘涓庤宸斁澶у櫒鍚岀浉绔殑2.5V 鍩哄噯鐢靛帇杩涜姣旇緝锛屼骇鐢熻宸數鍘嬶紝浠庤屾帶鍒惰剦鍐插搴︼紱3銆佽剼涓虹數娴佹娴嬭緭鍏ョ锛 褰...
  • 3842鑴7鐢靛帇12v8鑴娌℃湁5v鍚?
    绛旓細342鑻卞昂7浼12浼8鑻卞昂5浼1.濡傛灉3842鍙敤5V渚涚數锛屽熀鏈彲浠ュ垽鏂3842鏄濂界殑銆傜數璺澘鍔犺浇鍚锛8鑴娌℃湁5V鐢靛帇锛岀數婧鑴氱數鍘璺冲彉銆傚彲鑳界殑鍘熷洜鏈夊緢澶氾紝7鑴氬鎺50v47uf鐢佃В澶辨晥锛岃緭鍑虹煭璺紝鑷緵鐢电數璺け鏁堬紝MOS绠绋冲帇鍣ㄥ嚮绌跨瓑銆傦紝闇瑕佽愬績妫鏌ャ傛鏌OS绠$殑閲囨牱鐢甸樆鏄惁鐑у潖鎴栧紑璺2.涓嶈鐢ㄤ竾鐢ㄨ〃妫鏌ヨ緭鍑虹殑...
  • 48V鍏呯數鍣ㄧ數婧愯姱鐗3842鐨7鑴氱數鍘嬪彧鏈12鑷13V澶氭庝箞鍥炰簨鍟
    绛旓細48V鍏呯數鍣ㄧ數婧愯姱鐗3842鐨7鑴氱數鍘嬪彧鏈12鑷13V鍙兘鏄紑鍏冲彉鍘嬪櫒鍧忎簡銆48V鍏呯數鍣ㄧ數婧愯姱鐗3842鐨7鑴氱數鍘嬪彧鏈12鑷13V鍙兘鏄紑鍏冲彉鍘嬪櫒鍧忥紝鎴栨槸3842杩欎釜IC鍧忎簡銆7鑴歏cc鏄數婧愩傚綋渚涚數鐢靛帇浣庝簬 锛16V鏃讹紝UC3842涓嶅伐浣滐紝姝ゆ椂鑰楃數鍦1mA浠ヤ笅銆傝緭鍏ョ數鍘嬪彲浠ラ氳繃涓涓ぇ闃诲肩數闃讳粠楂樺帇闄嶅帇鑾峰緱銆傝姱鐗囧伐浣滃悗锛岃緭鍏ョ數鍘嬪彲...
  • UC3842鐢垫簮鍐嶆眰鍔(宸蹭慨澶)
    绛旓細6鑴氱殑涓滆タ寰堥噸瑕侊紝鍑哄幓涓涓數闃560娆у鍒版爡鏋侊紝鍥炴潵20娆у涓4148.寮鍏崇鐨勫師鏋佸鍦板櫌2娆у锛屽埌3842鐨3鑴氭槸1K鐢甸樆锛屽紑璺簡涓嶈捣寰併傚厛鎷嗕簡寮鍏崇锛岄氱數锛7鑴氱數鍘13V锛屾姈銆傘傘6鑴氫篃涓璧锋姈锛岀數鍘嬪ぇ姒1鍒2V銆傚厜7鑴氭姈锛6鑴氫笉鎶栵紝涓涓栦篃娌℃湁杈撳嚭锛
  • 鏈夋病鏈夋噦寮鍏崇數婧愮殑?鎴戞湁涓 uc3842鐨勫紑鍏崇數婧愮殑鐢佃矾鍥,鑳戒笉鑳藉府鎴戞寜...
    绛旓細3842 宸ヤ綔鐨勬潯浠讹紝7鑴氱數鍘嬨16.5浼忔墠鑳藉惎鍔紝4鑴氫細鏈1浼鑴変笁瑙掓尝淇″彿銆傚鏋6鑴氳杈撳嚭鏂规尝锛屼笅鍒寮曡剼鐢靛帇蹇呴』绗﹀悎锛岋紙2鑴氥2.5浼忥紝1鑴銆2浼忥紝3鑴氥1浼忥級锛屽鏋 7銆2銆1銆3鑴氬姞鐢靛悗涓嶇鍚堜笂杩扮數鍘嬪硷紝3482绗6鑴氭病杈撳嚭鎺ㄥ姩鏂规尝
  • 扩展阅读:电源3842芯片管脚图 ... 3842开关电源如何调压 ... 电焊机3846各脚电压 ... 3842开关电源打嗝维修 ... 3842开关电源 7脚电压低 ... 3842引脚电压图片 ... 3842电源各脚电压值 ... uc3842引脚功能图 ... 不装开关管3842各脚电压 ...

    本站交流只代表网友个人观点,与本站立场无关
    欢迎反馈与建议,请联系电邮
    2024© 车视网