tda7850芯片11,12,14,15,脚电压只有1点几伏,是怎么回事？ TCL电源模块TDA16846-2P只有11脚有3.3伏电压...
TDA7850A\u7684\u5404\u811a\u53c2\u6570\uff01!!!12 \uff0c13\uff0c15\uff0c16\u811a\u4fe1\u53f7\u8f93\u5165\u3002
4 \uff0c6\uff1b 8\uff0c10.\uff1b 18\uff0c20. \uff1b22\uff0c24\u811a\u8f93\u51fa\u3002
7\uff0c21\u811aVcc\u300223\u811aMUTE.5\u811aST--BY.1\uff0c3\uff0c9\uff0c19\uff0c25\uff0c27\u63a5\u5730\u3002
\u5982\u679c\u4f60\u7528\u5355\u7535\u6e90\u4f9b\u7535\u65f6\u8f93\u51fa\u7aef\u5f53\u7136\u6709\u7535\u538b\u4e86,\u8fd9\u4e2a\u7535\u538b\u662f\u4e0e1\u811a\u540c\u7535\u4f4d\u7684,\u5982\u679c\u7528+-\u53cc\u7535\u6e90\u4f9b\u7535,\u5e76\u4e141\u811a\u901a\u8fc7\u4e00\u4e2a\u7535\u963b\u63a5\u5730\u7684,4\u811a\u5c31\u662f0\u7535\u4f4d\u4e86\u3002\u53e6\u5916,\u4e0a\u8ff0\u4e24\u79cd\u60c5\u51b5\u4e0b\u76841\u811a\u7684\u8f93\u5165\u9694\u76f4\u7535\u5bb9\uff0c\u6216\u5355\u7535\u6e90\u65f62\u811a\uff0c\u53cd\u9988\u7535\u5bb9\u6f0f\u7535\u4e5f\u90fd\u4f1a\u4f7f4\u811a\u7535\u538b\u6f02\u79fb\u3002
TCL\u7535\u6e90\u6a21\u5757TDA16846-2P\u53ea\u670911\u811a\u67093.3\u4f0f\u7535\u538b\uff0c\u5176\u5b83\u7684\u6ca1\u6709\u539f\u56e0\u662f\uff1a
1\uff0cTDA16846-2P\u768414\u811a\u768412V\u4f9b\u7535\u662f\u5426\u6b63\u5e38\uff1b
2\uff0c2\u811a\u548c11\u811a\u7684\u4e24\u53ea\u5927\u963b\u503c\u7535\u963b\u5f00\u8def\u53d8\u503c\uff1b
3\uff0c1\u30012\u4e24\u9879\u6b63\u5e38\uff0cTDA16846-2P\u574f\u4e86\u9700\u66f4\u6362\u3002
TDA16846-2P\u5728\u5f69\u7535\u4e2d\u7684\u7535\u8def\uff1a
TDA7850芯片的11、12、14、15脚是信号输入脚，这几个脚电压1点几伏是正常的。
TDA785O脚位功能
TDA7850电原理图
绛旓細TDA7850鑺墖鐨11銆12銆14銆15鑴氭槸淇″彿杈撳叆鑴氾紝杩欏嚑涓剼鐢靛帇1鐐瑰嚑浼忔槸姝ｅ父鐨勩俆DA785O鑴氫綅鍔熻兘 TDA7850鐢靛師鐞嗗浘
绛旓細12 锛13锛15锛16鑴氫俊鍙疯緭鍏ャ4 锛6锛 8锛10.锛 18锛20. 锛22锛24鑴氳緭鍑恒7锛21鑴歏cc銆23鑴歁UTE.5鑴歋T--BY.1锛3锛9锛19锛25锛27鎺ュ湴銆傚鏋滀綘鐢ㄥ崟鐢垫簮渚涚數鏃惰緭鍑虹褰撶劧鏈夌數鍘嬩簡,杩欎釜鐢靛帇鏄笌1鑴氬悓鐢典綅鐨,濡傛灉鐢+-鍙岀數婧愪緵鐢,骞朵笖1鑴氶氳繃涓涓數闃绘帴鍦扮殑,4鑴氬氨鏄0鐢典綅浜嗐傚彟澶,涓婅堪...
绛旓細TDA7850鍔熸斁IC鏄彂鐑у弸浠湪鏀硅CD涓绘満鏃剁粡甯镐娇鐢ㄧ殑鑺墖銆傝繖鏄竴娆惧洓澹伴亾姹借溅闊冲搷涓撶敤鍔熸斁鑺墖锛閲囩敤鐨勬槸BTL鐨勮緭鍑哄舰寮忥紝澶栧洿鍏冧欢鏋佸皯浣嗛煶璐ㄦ瀬浣筹紝瀹夎涔熼潪甯告柟渚匡紝灏佽涓25鑴氬弻鍒楃洿鎻掑紡銆侷C鑺墖鐨勮緭鍑哄姛鐜囦负锛4脳50W銆傦紞4脳50W锛4惟鏈澶э紝鈥4x30W锛4惟锛14锛4V锛1KHz锛10锛咃紱锛4脳80W锛2惟鏈澶э紝鈥...
绛旓細TDA7850閲囩敤鍙岄潰闀閲戞澘锛屽厓鍣ㄤ欢鏋佸皯锛孖C鍘熸湰鏄负姹借溅鍔熸斁鐨勪竴娆惧洓澹伴亾BTL IC锛屼絾鏄煶璐ㄦ瀬浣筹紝瀹夎涔熸瀬鍏剁畝鍗曪紝閲囩敤鍗曠洿娴12V锛屾瀬闄愪负15V锛屼骇鍝侀噰鐢∕OS绠℃斁澶ц緭鍑猴紝杈撳嚭鍔熺巼澶ч傚悎浣庨樆鍠囧彮銆鑺墖鎴栧井鑺墖銆侀泦鎴愮數璺紝鍦ㄧ數瀛愬涓槸涓绉嶆妸鐢佃矾锛屽皬鍨嬪寲鐨勬柟寮忥紝骞堕氬父鍒堕犲湪鍗婂浣撴櫠鍦嗚〃闈笂銆傚墠杩板皢鐢佃矾鍒堕犲湪...
绛旓細TDA7850鏄數瑙嗘満鐨勫満杈撳嚭闆嗘垚鐢佃矾鍜孴DA7388闊抽鍔熸斁闆嗘垚鐢佃矾涓嶆槸鍚屼竴鍔熻兘锛屾墍浠ヤ笉鑳藉浠ｆ浛銆俆DA7388鐨11, 12 , 14锛 15鑴氱殑杈撳叆鐢靛鍙互鎹㈡垚WIMA闊抽鍙戠儳鐢靛锛屾帴6 20鑴氱殑鐢靛鍙互鎹㈡垚榛戦噾鍒氱數瀹广傜敱浜庝笉鐭ラ亾鍓嶇骇鏄粈涔堢數璺紝绗肩粺鍦拌涓涓嬶紝鍓嶇骇鑰﹀悎鐢靛鍏ㄩ儴鎹㈡垚鎹㈡垚WIMA闊抽鍙戠儳鐢靛锛屾护娉㈠ぇ鐢靛鐢...
绛旓細TDA7850鍜孴DA7851L涓鑸彲浠ヤ簰鎹 杩欎袱涓姱鐗囩敤鍦ㄨ溅杞藉姛鏀捐緝澶氥俆DA7850灞炶佽姱鐗,鐜板湪甯傚満鍩烘湰涓篢DA7851L鎵鏇夸唬銆7851鍜7850浜屼釜鑺墖閮芥槸寰堝ソ鐨勮姱鐗囷紝涓嶅悓鍦ㄤ簬7850澹伴煶鐩稿浜7851鍦ㄩ珮闊虫柟闈㈣鏄惧緱鏇村钩琛★紝7850鏀瑰鐢ㄥ氨鏄綆闊宠繃浜嗕竴鐐癸紝澹伴煶姣旀晥涓сTDA7850鑺墖鐨勫叾浠栨儏鍐电畝浠嬨俆DA7850鍏呭垎鍒╃敤浜嗘柊绐佹濈殑...
绛旓細1銆TDA7850涔癈HN鐨勫氨濂斤紝瀹屽叏娌″繀瑕佷拱MLT鐨勶紝7850楂樹綆闊抽兘濂斤紝缁嗚妭澶氾紝鏈夊緢濂藉惉鐨勪簩娆¤皭娉㈠０闊筹紝瑕佹敞鎰廙LT鐨7850鍩烘湰鍏ㄦ槸鍋囪揣锛屼笉绠′粈涔堝弻鐨囧啝鐨勫簵閾哄拰閿閲忕涓鐨勯兘涓鏍枫2銆乀DA7560澹伴煶涔熷緢濂斤紝浣嗘槸鍙戠儹閲忔瘮杈冨ぇ锛屼綆闊崇敋鑷冲己杩7850锛屾瘮杈冩湁鍚嶇殑鐢佃剳鏈夋簮闊崇bose Companion3灏辨槸鐢ㄧ殑7560锛岃櫧鐒舵槸姣7850...
绛旓細鏈敯CRV15骞寸殑杞﹁浇CD浣跨敤鐨勬槸TDA7850鍔熸斁鑺墖銆俆DA7850鍔熸斁鑺墖鏄竴娆鹃珮鎬ц兘鍔熸斁鑺墖锛鍏跺嘲鍊煎姛鐜囧彲杈惧埌200W銆傚湪CRV鐨勮溅杞紺D绯荤粺涓紝鍙渶瑕佸皢纰熺墖鎻掑叆CD鐨勫厜鍖哄唴锛岀劧鍚庨氳繃鎸変笅涓帶澶氬獟浣撶郴缁熶笂鐨1-6鎸夐敭锛屽氨鍙互閫夋嫨瀵瑰簲鐨凜D杩涜鎾斁銆俆DA7850鍔熸斁鑺墖鐨勪娇鐢紝淇濊瘉浜咰RV杞﹁浇CD绯荤粺鐨勯煶璐ㄥ拰闊抽噺鐨勯珮鍝佽川...
绛旓細TDA7850鍔熸斁鑺墖銆傛煡璇㈡澗涓嬪叚纰熻溅鏈哄畼缃戝緱鐭ワ紝鏉句笅鍏杞︽満浣跨敤鐨勬槸TDA7850鍔熸斁鑺墖銆俆DA7850鍔熸斁鑺墖宄板煎姛鐜囧彲杈惧埌200鐡︼紝鍙鎶婄鐗囨彃鍏ュ埌CD鐨勫厜椹卞唴锛岄氳繃鎸変笅涓帶澶氬獟浣撶殑鎸夐敭锛屽氨鑳介夋嫨瀵瑰簲鐨凜D浣跨敤浜嗐
绛旓細瀹夊崜澶у睆鍔熸斁TDA7850鑺墖鏈濂姐俆DA7850鏄剰娉曞崐瀵间綋鐨勯珮绔殑MOS绠＄殑澹伴煶鑺墖锛屽０闊崇湡瀹烇紝鎺ㄥ姏涔熷ぇ銆傚姛鏀捐姱鐗囨槸鍏锋湁鍔熺巼鏀惧ぇ鍔熻兘鐨勮姱鐗囷紝鍔熺巼鏀惧ぇ鍣ㄧ數璺氬父鍖呮嫭鐢靛帇鏀惧ぇ鎴栫數娴佹斁澶х數璺腑涓嶅瓨鍦ㄧ殑鐗规畩闂銆
