UC3845开关电源七脚电压是几伏 需要高手指点uc3844开关电源7脚电压13V八脚就是没电压...
uc3845n\u5404\u811a\u7535\u538b1,2,3\u811a\u7535\u538b\u5f88\u4f4e\uff0c\u662f\u4fe1\u53f7\u53cd\u9988\u811a\u3002\u4e0d\u597d\u76f4\u63a5\u62ff\u4e07\u7528\u8868\u6d4b\u8bd5\u30022\u811a\u6709\u65f6\u5019\u4e5f\u76f4\u63a5\u63a5\u5730\u3002
4\u811a\u662f\u9707\u8361\u9891\u7387\u57fa\u51c6\u811a\uff0c\u793a\u6ce2\u5668\u770b\u30025\u811a\u662f\u5730\u30026\u811a\u662f\u9a71\u52a8\u8f93\u51fa\uff0c\u63a5\u9a71\u52a8\u7ba1\uff0c7\u811a\u662f\u7535\u6e90\u811a\uff0c\u6b63\u5e38\u5de5\u4f5c\u4e00\u822c\u662f14-16V\u4e4b\u95f4\u30028\u811a\u662f\u53c2\u8003\u7535\u6e90\uff0c+5V\u3002
\u4f60\u597d\uff0c\u82af\u7247\u65e2\u7136\u6362\u4e86\u51e0\u4e2a\u8fd8\u662f\u574f\uff0c\u80af\u5b9a\u4e0d\u662f\u82af\u7247\u95ee\u9898\u3002
\u9996\u5148\u770b\uff1a
1\u3001\u770b8\u811a\u662f\u5426\u5728PCB\u677f\u4e0a\u6709\u5bf9\u5730\u77ed\u8def\u3002
2\u30017\u811a\u7535\u538b\u662f13V\uff0c\u662f\u4e0d\u662f\u6ca1\u5230\u989d\u5b9a\u5de5\u4f5c\u70b9\uff0c\u628a\u8fd9\u811a\u7535\u538b\u52a0\u523015V\u8bd5\u8bd5
3\u3001\u67e5\u770b\u4e00\u4e0b\u73af\u8def\u4e2d\u662f\u5426\u6709\u5668\u4ef6\u635f\u574f\u3002
4\u3001\u67e5\u770b\u5f00\u5173\u7535\u6e90\u4e2d\u7ed97\u811a\u4f9b\u7535\u7684\u7ed5\u7ec4\u662f\u5426\u6709\u635f\u574f\u3002
VREF\u6ca1\u6709\u4e86\u610f\u5473\u7740\u662f\u5f00\u73af\u4e86\u3002\u8fd8\u5f97\u770b\u770b\u542f\u52a8\u7535\u8def\u662f\u5426\u6709\u95ee\u9898\u3002\u5f00\u5173\u7535\u6e90\u5176\u4ed6\u8def\u662f\u5426\u6709\u8f93\u51fa\u3002
uc3844n\u4ee3\u6362
\u4ea7\u54c1\u578b\u53f7:uc3844n
\u8f93\u51fa\u65b9\u5f0f:\u5355\u8def\u56fe\u817e\u67f1
\u8f93\u51fa\u7535\u6d41(a):1
\u9891\u7387\u6700\u5927\u503c(khz):45
\u57fa\u51c6\u7535\u538b(v):5
\u542f\u52a8\u7535\u6d41(\u03bca):1000
\u5de5\u4f5c\u7535\u6d41(ma):11
\u8f93\u5165\u7535\u538b\u6700\u5c0f\u503c(v):10
\u8f93\u5165\u7535\u538b\u6700\u5927\u503c(v):30
pwm\u8f93\u51fa:1
\u5c01\u88c5/\u6e29\u5ea6(\u2103):8pdip/0~70
\u63cf\u8ff0:\u7535\u6d41\u65b9\u5f0fpwm\u63a7\u5236\u5668
UC38XX\u7cfb\u5217\u7684\u4e0d\u540c\u4e3b\u8981\u5c31\u662f\u542f\u52a8\u7535\u538b\u548c\u5360\u7a7a\u6bd4\u7684\u533a\u522b\u3002UC3844\u80fd\u7528UC3842\u4ee3\uff0c\u4e5f\u53ef\u4ee5\u7528UC36845\u5e26\uff0c\u56e0\u4e3a4844\u7684\u542f\u52a8\u7535\u538b\u9ad8\u4e8e3845\u3002
\u4f46\u662f\u5982\u679c\u6bd4\u8f83\u91cd\u8981\u7684\u8bbe\u5907\uff0c\u5efa\u8bae\u8fd8\u662f\u627e\u539f\u578b\u53f7\u6216\u8005\u627e\u4ee5\u4e0b\u8fd9\u4e9b\u4ee3\u6362\u3002
CS3844 \u3001TL3844 \u3001CW3844 \u6216\u8005IP3844 \u3002
uc3844\u5f00\u5173\u7535\u6e907\u811a\u7535\u538b13V\u516b\u811a\u5c31\u662f\u6ca1\u7535\u538b\u662f\u4ec0\u4e48\u539f\u56e0
\u82af\u7247\u65e2\u7136\u6362\u4e86\u51e0\u4e2a\u8fd8\u662f\u574f\uff0c\u80af\u5b9a\u4e0d\u662f\u82af\u7247\u95ee\u9898\u3002
\u9996\u5148\u770b\uff1a
1\u3001\u770b8\u811a\u662f\u5426\u5728PCB\u677f\u4e0a\u6709\u5bf9\u5730\u77ed\u8def\u3002
2\u30017\u811a\u7535\u538b\u662f13V\uff0c\u662f\u4e0d\u662f\u6ca1\u5230\u989d\u5b9a\u5de5\u4f5c\u70b9\uff0c\u628a\u8fd9\u811a\u7535\u538b\u52a0\u523015V\u8bd5\u8bd5
3\u3001\u67e5\u770b\u4e00\u4e0b\u73af\u8def\u4e2d\u662f\u5426\u6709\u5668\u4ef6\u635f\u574f\u3002
4\u3001\u67e5\u770b\u5f00\u5173\u7535\u6e90\u4e2d\u7ed97\u811a\u4f9b\u7535\u7684\u7ed5\u7ec4\u662f\u5426\u6709\u635f\u574f\u3002
VREF\u6ca1\u6709\u4e86\u610f\u5473\u7740\u662f\u5f00\u73af\u4e86\u3002\u8fd8\u5f97\u770b\u770b\u542f\u52a8\u7535\u8def\u662f\u5426\u6709\u95ee\u9898\u3002\u5f00\u5173\u7535\u6e90\u5176\u4ed6\u8def\u662f\u5426\u6709\u8f93\u51fa\u3002

\u53d8\u9891\u5668\u5f00\u5173\u7535\u6e90\u7ef4\u4feeuc3844\u76846\u811a\u7535\u538b\u9ad8\uff0c\u53bb\u9664\u6ee4\u6ce2\u7535\u5bb9\uff0c3844\u5355\u72ec\u9001\u7535\uff0c8\u811a49\u4f0f\uff0c6\u811a\u600e
6\u811a\u662f\u4f9b\u7535\uff0c\u898115V\u4ee5\u4e0a\u624d\u80fd\u8d77\u632f
\u7535\u52a8\u8f66\u5145\u7535\u5668uc3842\u80fd\u7528uc3844\u4ee3\u66ff
\u7535\u52a8\u8f66\u5145\u7535\u5668UC3842\u4e0d\u53ef\u4ee5\u7528UC3844\u4ee3\u66ff\u3002
UC3842\u4e0eUC3844\u90fd\u662f\u9ad8\u6027\u80fd\u56fa\u5b9a\u9891\u7387\u7535\u6d41\u6a21\u5f0f\u63a7\u5236\u5668\uff0c\u5668\u4ef6\u5c01\u88c5\u4e0e\u811a\u6392\u5217\u4e5f\u5b8c\u5168\u4e00\u6837\u3002\u53ea\u662fUC3842\u82af\u7247\u53ef\u4ee5\u5fae\u8c03\u632f\u8361\u5668\u653e\u7535\u7535\u6d41\uff0c\u53ef\u7cbe\u786e\u63a7\u5236\u5360\u7a7a\u6bd4\uff0c\u800cUC3844\u5374\u6ca1\u6709\u8fd9\u79cd\u529f\u80fd\uff0c\u6240\u4ee5\u4e0d\u80fd\u4f7f\u7528UC3844\u4ee3\u6362UC3842\u3002
UC3842\u53ef\u4ee5\u4f7f\u7528UC2842\u3001UC2843\u3001UC3843\u4ee3\u6362\uff0c\u5b83\u4eec\u7684\u53c2\u6570\u5b8c\u5168\u4e00\u6837\u3002
\u9700\u8981\u9ad8\u624b\u6307\u70b9uc3844\u5f00\u5173\u7535\u6e907\u811a\u7535\u538b13V\u516b\u811a\u5c31\u96c6\u6210\u7535\u8def\u7684\u7279\u70b9\u662f\u4f53\u79ef\u5c0f\uff0c\u91cd\u91cf\u8f7b\uff0c\u5f15\u51fa\u7ebf\u548c\u710a\u63a5\u70b9\u5c11\uff0c\u5bff\u547d\u957f\uff0c\u53ef\u9760\u6027\u9ad8\uff0c\u6027\u80fd\u597d\u7b49\uff0c\u540c\u65f6\u6210\u672c\u4f4e\uff0c\u4fbf\u4e8e\u5927\u89c4\u6a21\u751f\u4ea7\u3002\u5b83\u4e0d\u4ec5\u5728\u5de5\u3001\u6c11\u7528\u7535\u5b50\u8bbe\u5907\u5982\u6536\u5f55\u673a\u3001\u7535\u89c6\u673a\u3001\u8ba1\u7b97\u673a\u7b49\u65b9\u9762\u5f97\u5230\u5e7f\u6cdb\u7684\u5e94\u7528\u4ec5\u4f9b\u53c2\u8003
才启动应该是16V,正常工作在10V--16v之间
这是电源脚吧 应该是15V
最小12V 最大25V
绛旓細鍚勪汉璁捐鐨勪笉涓鏍凤紝3845鐨7鑴鏄鐢垫簮锛屾渶楂樿緭鍏鐢靛帇涓36V锛堟瀬闄愬硷級锛岃捣鍔ㄧ數鍘嬪间负8.5V锛屽叧鏂數鍘嬪间负7.6V銆傞氬父璁捐鍦10锛18V涔嬮棿锛屾甯稿伐浣滄椂鏈浣抽夋嫨鍦12锛15V鐢垫簮杩涜渚涚數銆
绛旓細7鑴杈撳叆锛12v~17v锛6鑴氳緭鍑哄埌mos,8鑴5v鍩哄噯鐢靛帇锛5鑴氭帴鍦帮紝4鑴氬畾鏃讹紝3鑴氱數娴佹娴嬶紝2鑴氱數鍘妫娴嬶紝1鑴氬唴閮ㄨ宸柟澶у櫒杈撳嚭銆
绛旓細UC3842銆UC3845B閮芥槸寮鍏崇數婧鏍稿績鎺у埗鍣ㄤ欢锛7鑴锛氱數婧愶紝5鑴氾細鎺ュ湴锛岄氱數娴嬭瘯鎯呭喌涓嬶紝浣跨敤涓囩敤琛ㄤ晶7銆5鑴氱數鍘锛岀湅鏄惁姝ｅ父锛 6鑴氭槸杈撳嚭鑴氾紝鐢ㄤ竾鐢ㄨ〃妫娴嬶紝鏄礋鐢靛帇锛屽氨璇存槑璇ュ櫒浠跺湪宸ヤ綔锛屽鏋滄槸0V鎴栬呮鐢靛帇锛屽熀鏈垽鏂鍣ㄤ欢宸ヤ綔涓嶆甯告垨鑰呮病鏈夊伐浣溿 澶囨敞锛 璇ュ櫒浠讹紝鎴戝缓璁彧妫娴7鑴氫緵鐢电數鍘嬶紝濡傛灉...
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绛旓細浣犵粰鐨勬暟鎹お灏戯紝渚濇垜鐪嬪彲鑳芥槸r9闃诲煎彉澶ф墍鑷淬傛垨鏄痳7锛宺8鍙樸傚啀涓嶅氨鏄煡涓嬪弽棣堝鍏夎︼紝431锛宨c2鑴氱數鍘銆
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绛旓細R3鏄數娴佸彇鏍风數闃,鍙栨牱鐢靛帇缁廟13鍔犲埌TL494鐨(15)鑴氳繘琛岀數娴佹帶鍒躲傜數娴佹帶鍒剁殑瀹炶川涔熸槸鎺у埗杈撳嚭鐢靛帇銆 鎺ㄦ尳椹卞姩:鐢盦3銆丵4銆丅2绛夊厓浠剁粍鎴愩傝繖鏄竴绉嶅吀鍨嬬殑鍙樺帇鍣ㄦ帹鎸藉紡鍔熺巼鏀惧ぇ鐢佃矾銆侱11銆丏14鐨勪綔鐢ㄤ笌D5銆丏7鐩镐技,淇濇姢Q3銆丵4,鎶夿2鍒濈骇鐨勫弽婵鑳介噺鍥為鐢垫簮銆 鍏呯數鐘舵佹寚绀轰富瑕佺敱杩愭斁LM358銆丩ED1銆丩ED2绛夊厓浠剁粍鎴愩
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绛旓細1.PWM浜х敓鍜屾帹鍔ㄧ數璺 PWM浜х敓鐢佃矾鐢盜C1TL494鍜屽鍥村厓浠舵瀯鎴愩俆L494鏄疨WM寮鍏崇數婧闆嗘垚鐢佃矾銆傚紩鑴氬姛鑳藉拰鍐 閮ㄦ鍥惧鍥2鎵绀恒侷C1鐨勭5銆6鑴氬鎺ョ殑C10銆丷19鏄畾鏃跺厓浠讹紝鍐冲畾閿娇娉㈡尟鑽″櫒鐨勬尟鑽￠鐜囷紝F=1.1/RC锛 鎸夊浘涓暟鍊间负50KHz銆傜14鑴氭槸+5V鍩哄噯鐢靛帇杈撳嚭绔紝闄よ姱鐗囧唴閮ㄤ娇鐢ㄥ锛岃繕鐩存帴鎴栧垎鍘嬪悗...
