{"id":1462,"date":"2018-07-06T04:07:13","date_gmt":"2018-07-06T04:07:13","guid":{"rendered":"https:\/\/hocvienit.vn\/?p=1462"},"modified":"2025-02-24T16:18:12","modified_gmt":"2025-02-24T09:18:12","slug":"nguon-dau-vao-tren-may-laptop","status":"publish","type":"post","link":"https:\/\/hocvienit.vn\/?p=1462","title":{"rendered":"Ngu\u1ed3n \u0111\u1ea7u v\u00e0o tr\u00ean Laptop"},"content":{"rendered":"
\"Ngu\u1ed3n
Ngu\u1ed3n \u0111\u1ea7u v\u00e0o tr\u00ean Laptop<\/figcaption><\/figure>\n

1. \u0110\u1ecbnh ngh\u0129a v\u1ec1 Ngu\u1ed3n \u0111\u1ea7u v\u00e0o<\/strong><\/span><\/h2>\n

1.1 Ngu\u1ed3n \u0111\u1ea7u v\u00e0o l\u00e0 g\u00ec?<\/strong><\/span><\/h3>\n

\u00a0 – Ngu\u1ed3n \u0111\u1ea7u v\u00e0o l\u00e0 \u0111i\u1ec3m t\u1eadp trung gi\u1eefa ngu\u1ed3n DCIN( Adapter) v\u00e0 ngu\u1ed3n V.BAT( ngu\u1ed3n Pin), c\u00f3 \u0111i\u1ec7n \u00e1p t\u1eeb 12\u00f720V.<\/span><\/p>\n

\u00a0 – L\u00e0 ngu\u1ed3n \u0111i\u1ec7n \u0111\u1ea7u ti\u00ean xu\u1ea5t hi\u1ec7n tr\u00ean m\u00e1y khi ta g\u1eafn Pin ho\u1eb7c c\u1eafm Adapter.<\/span><\/p>\n

\u00a0 – Tr\u00ean m\u00e1y Laptop, ngu\u1ed3n \u0111\u1ea7u v\u00e0o \u0111i \u0111\u1ebfn c\u00e1c ngu\u1ed3n xung \u0111\u1ec3 cung c\u1ea5p \u0111i\u1ec7n \u00e1p cho c\u00e1c ngu\u1ed3n xung ho\u1ea1t \u0111\u1ed9ng; ngo\u00e0i ra ngu\u1ed3n \u0111\u1ea7u v\u00e0o ch\u1ec9 c\u1ea5p tr\u1ef1c ti\u1ebfp cho kh\u1ed1i cao \u00e1p \u0111\u1ec3 t\u1ea1o \u0111i\u1ec7n \u00e1p chi\u1ebfu s\u00e1ng m\u00e0n h\u00ecnh.<\/span><\/p>\n

\u00a0 – Khi m\u00e1y c\u00f3 ngu\u1ed3n \u0111\u1ea7u v\u00e0o, m\u00e1y v\u1eabn ch\u01b0a \u0103n d\u00f2ng ho\u1eb7c \u0103n d\u00f2ng kh\u00f4ng \u0111\u00e1ng k\u1ec3.<\/span><\/p>\n

\u00a0 – Ngu\u1ed3n \u0111\u1ea7u v\u00e0o kh\u00f4ng \u0111i tr\u1ef1c ti\u1ebfp t\u1eeb ngu\u1ed3n DCIN v\u00e0 ngu\u1ed3n Pin m\u00e0 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t b\u1edfi m\u1ea1ch \u0111\u1ea7u v\u00e0o. C\u00e1c m\u1ea1ch \u0111\u1ea7u v\u00e0o th\u1ef1c ch\u1ea5t l\u00e0 c\u00e1c m\u1ea1ch b\u1ea3o v\u1ec7 v\u00e0 \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1edfi c\u00e1c m\u1ea1ch b\u1ea3o v\u1ec7 v\u00e0 SIO.<\/span><\/p>\n

\u00a0\u00a0\u00a0 + C\u00e1c d\u00f2ng m\u00e1y IBM th\u00ec IC b\u1ea3o v\u1ec7 h\u1ecd TB( v\u00ed d\u1ee5 TB62501) \u0111i\u1ec1u khi\u1ec3n c\u00e1c Mosfet \u0111\u1ea7u v\u00e0o.<\/span><\/p>\n

\u00a0\u00a0\u00a0 + C\u00e1c d\u00f2ng m\u00e1y kh\u00e1c nh\u01b0 HP, DELL, ACER, ASUS, SONY th\u00ec IC-SIO v\u00e0 c\u00e1c m\u1ea1ch b\u1ea3o v\u1ec7 s\u1ebd \u0111i\u1ec1u khi\u1ec3n m\u1ea1ch \u0111\u1ea7u v\u00e0o.<\/span><\/p>\n

\"\"<\/span><\/p>\n

\"S\u01a1
S\u01a1 \u0111\u1ed3 ngu\u1ed3n \u0111\u1ea7u v\u00e0o tr\u00ean laptop<\/figcaption><\/figure>\n

1.2 Ngu\u1ed3n \u0111\u1ea7u v\u00e0o tr\u00ean c\u00e1c m\u00e1y IBM<\/strong><\/span><\/h3>\n

Ch\u00fa th\u00edch c\u00e1c linh ki\u1ec7n tr\u00ean s\u01a1 \u0111\u1ed3:<\/span><\/p>\n

    \n
  • R453, D10, R413:<\/strong> C\u00e1c linh ki\u1ec7n d\u1eabn \u0111i\u1ec7n \u00e1p 16V v\u00e0o c\u1ea5p ngu\u1ed3n VREGIN16 cho IC-TB62501, \u0111\u00e2y l\u00e0 \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ti\u00ean xu\u1ea5t hi\u1ec7n tr\u00ean m\u00e1y.<\/span><\/li>\n
  • R413, D19, F9:<\/strong> C\u00e1c linh ki\u1ec7n \u0111\u01b0a ngu\u1ed3n Pin v\u00e0o c\u1ea5p ngu\u1ed3n cho IC-TB62501.<\/span><\/li>\n
  • IC-TB62501<\/strong> tr\u00ean m\u00e1y IBM T42 c\u00f3 nhi\u1ec7m v\u1ee5 t\u1ea1o ra \u0111i\u1ec7n \u00e1p ch\u1edd VCC3SW \u0111\u1ed3ng th\u1eddi \u0111i\u1ec1u khi\u1ec3n c\u00e1c Mosfet \u0111\u1ea7u v\u00e0o v\u00e0 th\u1ef1c hi\u1ec7n ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7. IC n\u00e0y \u0111i\u1ec1u khi\u1ec3n Q36 tr\u00ean \u0111\u01b0\u1eddng DCIN v\u00e0 \u0111i\u1ec1u khi\u1ec3n Q8, Q10, Q13 tr\u00ean \u0111\u01b0\u1eddng Pin.<\/span><\/li>\n
  • H8<\/strong> l\u00e0 IC \u0111i\u1ec1u khi\u1ec3n ph\u00edm, chu\u1ed9t \u0111\u1ed3ng th\u1eddi \u0111i\u1ec1u khi\u1ec3n m\u1ea1ch s\u1ea1c.<\/span><\/li>\n<\/ul>\n

    Ban \u0111\u1ea7u khi ch\u01b0a c\u00f3 ngu\u1ed3n c\u1ea5p th\u00ec ch\u00e2n DISCHARGING c\u00f3 m\u1ee9c 0 n\u00ean \u0111i\u1ec7n \u00e1p \u0111i\u1ec1u khi\u1ec3n v\u00e0o ch\u00e2n G \u0111\u00e8n Mosfet thu\u1eadn Q34 c\u00f3 m\u1ee9c 0 v\u00e0 \u0111\u00e8n d\u1eabn.<\/span><\/p>\n

    Khi c\u1eafm ngu\u1ed3n DCIN:<\/span><\/strong><\/p>\n

    D\u00f2ng \u0111i\u1ec7n \u0111i qua c\u1ea7u ch\u00ec F2, ti\u1ebfp theo \u0111i qua m\u1ed1i D-S c\u1ee7a \u0111\u00e8n thu\u1eadn Q34. L\u00fac n\u00e0y ch\u00e2n G c\u1ee7a Q34 c\u00f3 \u00e1p b\u1eb1ng 0(V) n\u00ean \u0111\u00e8n d\u1eabn. Q36 l\u00e0 Mosfet ng\u01b0\u1ee3c n\u00ean d\u00f2ng \u0111i\u1ec7n kh\u00f4ng th\u1ec3 \u0111i t\u1eeb S sang D( do ph\u00e2n c\u1ef1c ng\u01b0\u1ee3c) nh\u01b0ng d\u00f2ng \u0111i\u1ec7n \u0111i qua \u0110iot \u0111\u1ea5u song song v\u1edbi c\u1ef1c D-S.<\/span><\/p>\n

    \"M\u1ea1ch
    M\u1ea1ch c\u1ea5p ngu\u1ed3n \u0111\u1ea7u v\u00e0o khi c\u1eafm ngu\u1ed3n DCIN<\/figcaption><\/figure>\n

    Khi c\u1ea5p ngu\u1ed3n Pin:<\/span><\/strong><\/p>\n

    Khi g\u1eafn Pin, ngu\u1ed3n V.BAT \u0111i qua \u0110iot b\u00ean trong Mosfet Q8, sau \u0111\u00f3 \u0111i qua m\u1ed1i S-D c\u1ee7a Mosfet thu\u1eadn Q10( l\u00fac n\u00e0y l\u1ec7nh \u0111i\u1ec1u khi\u1ec3n v\u00e0o ch\u00e2n G c\u1ee7a Q10 c\u00f3 m\u1ee9c th\u1ea5p n\u00ean \u0111\u00e8n d\u1eabn), ti\u1ebfp t\u1ee5c d\u00f2ng \u0111i\u1ec7n \u0111i qua \u0110iot b\u00ean trong \u0111\u00e8n Q13 v\u00e0o \u0111\u01b0\u1eddng VINT16.<\/span><\/p>\n

    \"M\u1ea1ch
    M\u1ea1ch c\u1ea5p ngu\u1ed3n \u0111\u1ea7u v\u00e0o khi c\u1ea5p ngu\u1ed3n Pin<\/figcaption><\/figure>\n

    1.3 C\u00e1c linh ki\u1ec7n c\u1ee7a m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n ngu\u1ed3n \u0111\u1ea7u v\u00e0o tr\u00ean m\u00e1y IBMT42<\/strong><\/span><\/h3>\n
    \"C\u00e1c
    C\u00e1c linh ki\u1ec7n c\u1ee7a m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n ngu\u1ed3n \u0111\u1ea7u v\u00e0o tr\u00ean m\u00e1y IBMT42<\/figcaption><\/figure>\n

    1.4 C\u00e1c v\u1ecb tr\u00ed c\u00f3 ngu\u1ed3n \u0111\u1ea7u v\u00e0o VINT16 \u0111i t\u1edbi \u0111\u1ec3 c\u1ea5p \u0111i\u1ec7n cho c\u00e1c ngu\u1ed3n xung c\u1ee7a m\u00e1y T42<\/strong><\/span><\/h3>\n

    Ngu\u1ed3n DCIN ban \u0111\u1ea7u \u0111i v\u00e0o r\u1eafc c\u1eafm, sau \u0111\u00f3 \u0111i qua c\u1ea7u ch\u00ec \u0111i v\u00e0o ch\u00e2n S \u0111\u00e8n Q34 r\u1ed3i \u0111\u01b0a qua ba \u0111i\u1ec7n tr\u1edf c\u1ea3m bi\u1ebfn d\u00f2ng \u0111\u1ea5u song song r\u1ed3i \u0111i v\u00e0o ch\u00e2n S \u0111\u00e8n Q36. Ta thu \u0111\u01b0\u1ee3c \u0111i\u1ec7n \u00e1p VINT16 t\u1ea1i ch\u00e2n D \u0111\u00e8n Q36. \u0110i\u1ec7n \u00e1p n\u00e0y s\u1ebd c\u1ea5p \u0111i\u1ec7n cho c\u00e1c ngu\u1ed3n xung c\u1ee7a m\u00e1y.<\/span><\/p>\n

    \"C\u00e1c
    C\u00e1c v\u1ecb tr\u00ed c\u00f3 ngu\u1ed3n \u0111\u1ea7u v\u00e0o VINT16 \u0111i t\u1edbi \u0111\u1ec3 c\u1ea5p \u0111i\u1ec7n cho c\u00e1c ngu\u1ed3n xung c\u1ee7a m\u00e1y T42<\/figcaption><\/figure>\n

    2. Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a M\u1ea1ch c\u1ea5p ngu\u1ed3n \u0111\u1ea7u v\u00e0o<\/strong><\/span><\/h2>\n

    2.1 Nguy\u00ean l\u00fd chung c\u1ee7a m\u1ea1ch \u0111\u1ea7u v\u00e0o \u0111\u01b0\u1eddng Adapter<\/strong><\/span><\/h3>\n
    \"Nguy\u00ean
    Nguy\u00ean l\u00fd chung c\u1ee7a m\u1ea1ch \u0111\u1ea7u v\u00e0o \u0111\u01b0\u1eddng Adapter<\/figcaption><\/figure>\n

    \u2022 Ngu\u1ed3n Adapter \u0111i v\u00e0o qua r\u1eafc c\u1eafm v\u00e0 ph\u1ea3i \u0111i qua m\u1ea1ch c\u1ea5p ngu\u1ed3n \u0111\u1ea7u v\u00e0o tr\u01b0\u1edbc khi \u0111\u1ebfn c\u00e1c ngu\u1ed3n xung<\/span><\/p>\n

    – Th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a m\u1ea1ch c\u1ea5p ngu\u1ed3n \u0111\u1ea7u v\u00e0o l\u00e0 Mosfet thu\u1eadn.<\/span><\/p>\n

    – \u0110\u00e8n Mosfet thu\u1eadn \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1edfi c\u00e1c m\u1ea1ch b\u1ea3o v\u1ec7 v\u00e0 m\u1ea1ch s\u1ed1.<\/span><\/p>\n

    – Khi Mosfet thu\u1eadn c\u00f3 m\u1ee9c 0 \u0111i\u1ec1u khi\u1ec3n ch\u00e2n G th\u00ec n\u00f3 d\u1eabn, khi c\u00f3 m\u1ee9c 1 \u0111i\u1ec1u khi\u1ec3n th\u00ec n\u00f3 t\u1eaft( m\u1ee9c 0 l\u00e0 m\u1ee9c th\u1ea5p 0V, m\u1ee9c 1 l\u00e0 m\u1ee9c cao t\u1eeb 1V tr\u1edf l\u00ean).<\/span><\/p>\n

    \u2022 M\u1ea1ch b\u1ea3o v\u1ec7 1:<\/strong> C\u00f3 ch\u1ee9c n\u0103ng ki\u1ec3m tra \u0111i\u1ec7n \u00e1p c\u1ee7a ngu\u1ed3n Adapter. N\u1ebfu \u0111i\u1ec7n \u00e1p Adapter \u0111\u1ea1t ng\u01b0\u1ee1ng cho ph\u00e9p th\u00ec m\u1ea1ch b\u1ea3o v\u1ec7 1 s\u1ebd cho ph\u00e9p \u0111\u00e8n Mosfet thu\u1eadn d\u1eabn. N\u1ebfu \u0111i\u1ec7n \u00e1p Adapter qu\u00e1 th\u1ea5p th\u00ec m\u1ea1ch b\u1ea3o v\u1ec7 1 s\u1ebd ng\u1eaft \u0111\u00e8n thu\u1eadn, ng\u0103n kh\u00f4ng cho \u0111i\u1ec7n \u00e1p v\u00e0o m\u00e1y.<\/span><\/p>\n

    \u2022 M\u1ea1ch b\u1ea3o v\u1ec7 2:<\/strong> C\u00f3 ch\u1ee9c n\u0103ng ki\u1ec3m tra \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra, t\u1eeb \u0111\u00f3 s\u1ebd ph\u00e1t hi\u1ec7n ra c\u00e1c tr\u01b0\u1eddng h\u1ee3p ch\u1eadp t\u1ea3i. N\u1ebfu \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra s\u1ee5t \u00e1p, m\u1ea1ch b\u1ea3o v\u1ec7 2 s\u1ebd ra l\u1ec7nh ng\u1eaft \u0111\u00e8n Mosfet thu\u1eadn \u0111\u1ec3 b\u1ea3o v\u1ec7.<\/span><\/p>\n

    \u2022 M\u1ea1ch b\u1ea3o v\u1ec7 3:<\/strong> Th\u01b0\u1eddng thi\u1ebft k\u1ebf trong IC-SIO, m\u1ea1ch n\u00e0y theo d\u00f5i s\u1ef1 ho\u1ea1t \u0111\u1ed9ng chung c\u1ee7a m\u00e1y. N\u1ebfu c\u00f3 s\u1ef1 c\u1ed1 nghi\u00eam tr\u1ecdng x\u1ea3y ra, SIO s\u1ebd cho ra l\u1ec7nh ACOFF \u0111\u1ec3 \u0111\u01b0a \u0111\u1ebfn ng\u1eaft \u0111\u00e8n Mosfet thu\u1eadn.<\/span><\/p>\n

    \u2022 M\u1ea1ch s\u1ed1:<\/strong> Bao g\u1ed3m c\u00e1c \u0111\u00e8n BCE ho\u1eb7c DSG \u0111\u1ee9ng \u1edf ph\u00eda tr\u01b0\u1edbc \u0111\u00e8n Mosfet thu\u1eadn nh\u1eb1m m\u1ee5c \u0111\u00edch thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i 0 sang 1 v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. N\u00f3 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf gi\u1ed1ng nh\u01b0 c\u00e1c c\u1ed5ng \u0111\u1ea3o: n\u1ebfu ta \u0111\u01b0a l\u1ec7nh v\u00e0o B ho\u1eb7c G m\u00e0 l\u1ea5y ra \u1edf C ho\u1eb7c D th\u00ec l\u1ec7nh s\u1ebd \u0111\u1ea3o l\u1ea1i. V\u00ed d\u1ee5 \u0111\u01b0a m\u1ee9c 1 v\u00e0o B th\u00ec thu \u0111\u01b0\u1ee3c m\u1ee9c 0 \u1edf C v\u00e0 ng\u01b0\u1ee3c l\u1ea1i.<\/span><\/p>\n

    2.2 Ph\u00e2n t\u00edch m\u1ea1ch c\u1ea5p ngu\u1ed3n \u0111\u1ea7u v\u00e0o tr\u00ean m\u00e1y HP CQ40<\/strong><\/span><\/h3>\n

    B\u01b0\u1edbc 1:<\/strong><\/span><\/p>\n

    \"B\u01b0\u1edbc
    B\u01b0\u1edbc 1<\/figcaption><\/figure>\n

    B\u01b0\u1edbc 2:<\/strong><\/span><\/p>\n

    \"B\u01b0\u1edbc
    B\u01b0\u1edbc 2<\/figcaption><\/figure>\n

    B\u01b0\u1edbc 3:<\/strong><\/span><\/p>\n

    \"B\u01b0\u1edbc
    B\u01b0\u1edbc 3<\/figcaption><\/figure>\n

    2.3 Ph\u00e2n t\u00edch m\u1ea1ch c\u1ea5p ngu\u1ed3n \u0111\u1ea7u v\u00e0o tr\u00ean m\u00e1y LENOVO Y430<\/strong><\/span><\/h3>\n

    S\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111\u1ea7u v\u00e0o d\u1ea1ng t\u1ed5ng qu\u00e1t:<\/span><\/strong><\/p>\n

    \"S\u01a1
    S\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111\u1ea7u v\u00e0o d\u1ea1ng t\u1ed5ng qu\u00e1t<\/figcaption><\/figure>\n

    Ph\u00e2n t\u00edch:<\/span><\/strong><\/p>\n

      \n
    • M\u1ea1ch \u0111\u1ea7u v\u00e0o th\u1ef1c ch\u1ea5t l\u00e0 m\u1ed9t m\u1ea1ch c\u00f4ng t\u1eafc \u0111i\u1ec7n t\u1eed \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t b\u1edfi c\u00e1c m\u1ea1ch b\u1ea3o v\u1ec7. N\u00f3 g\u1ea7n gi\u1ed1ng nh\u01b0 m\u1ed9t chi\u1ebfc Aptomat t\u1ef1 \u0111\u1ed9ng c\u1ee7a gia \u0111\u00ecnh, ch\u1ec9 kh\u00e1c l\u00e0 chi\u1ebfc Aptomat n\u00e0y n\u00f3 t\u1ef1 \u0111\u1ed9ng \u0111\u00f3ng, t\u1ef1 \u0111\u1ed9ng ng\u1eaft khi \u0111i\u1ec7n \u00e1p \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u00f3 th\u1ecfa m\u00e3n hay kh\u00f4ng?\u00a0<\/span><\/li>\n
    • N\u1ebfu ngu\u1ed3n Adapter th\u1ecfa m\u00e3n ng\u01b0\u1ee1ng cho ph\u00e9p th\u00ec m\u1ea1ch b\u1ea3o v\u1ec7 1 s\u1ebd cho c\u00f4ng t\u1eafc <\/span>(Mosfet thu\u1eadn) \u0111\u00f3ng; n\u1ebfu \u00e1p t\u1eeb Adapter v\u00e0o qu\u00e1 th\u1ea5p th\u00ec n\u00f3 ng\u1eaft c\u00f4ng t\u1eafc kh\u00f4ng cho \u0111i\u1ec7n v\u00e0o m\u00e1y.<\/span><\/li>\n
    • M\u1ea1ch b\u1ea3o v\u1ec7 2 l\u1ea1i theo d\u00f5i ngu\u1ed3n \u0111\u1ea7u v\u00e0o( ph\u00eda sau c\u00f4ng t\u1eafc). N\u1ebfu ngu\u1ed3n \u0111\u1ea7u v\u00e0o qu\u00e1 th\u1ea5p( t\u1ee9c l\u00e0 b\u1ecb ch\u1eadp t\u1ea3i) th\u00ec m\u1ea1ch b\u1ea3o v\u1ec7 2 s\u1ebd \u0111i\u1ec1u khi\u1ec3n ng\u1eaft c\u00f4ng t\u1eafc( ng\u1eaft Mosfet thu\u1eadn). N\u1ebfu ngu\u1ed3n \u0111\u1ea7u v\u00e0o th\u1ecfa m\u00e3n th\u00ec n\u00f3 duy tr\u00ec cho c\u00f4ng t\u1eafc \u0111\u00f3ng.<\/span><\/li>\n
    • M\u1ea1ch b\u1ea3o v\u1ec7 3 th\u1ef1c ch\u1ea5t l\u00e0 chip SIO. N\u00f3 theo d\u00f5i ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c ngu\u1ed3n xung v\u00e0 c\u00e1c Chipset, n\u1ebfu c\u00f3 s\u1ef1 c\u1ed1 nghi\u00eam tr\u1ecdng x\u1ea3y ra nh\u01b0 ch\u1eadp ph\u1ee5 t\u1ea3i c\u1ee7a c\u00e1c ngu\u1ed3n xung, ch\u1eadp Chipset\u2026 th\u00ec n\u00f3 s\u1ebd ra l\u1ec7nh ng\u1eaft c\u00f4ng t\u1eafc (Mosfet thu\u1eadn) \u0111\u1ec3 b\u1ea3o v\u1ec7 c\u00e1c linh ki\u1ec7n c\u1ee7a m\u00e1y.<\/span><\/li>\n<\/ul>\n

      S\u01a1 \u0111\u1ed3 m\u1ea1ch c\u1ea5p ngu\u1ed3n \u0111\u1ea7u v\u00e0o c\u1ee7a m\u00e1y LENOVO Y430:<\/span><\/strong><\/p>\n

      \"S\u01a1
      S\u01a1 \u0111\u1ed3 m\u1ea1ch c\u1ea5p ngu\u1ed3n \u0111\u1ea7u v\u00e0o c\u1ee7a m\u00e1y LENOVO Y430<\/figcaption><\/figure>\n

      Ph\u00e2n t\u00edch nguy\u00ean l\u00fd m\u1ea1ch:<\/span><\/strong><\/p>\n

      – M\u1ea1ch b\u1ea3o v\u1ec7 1 theo d\u00f5i \u0111i\u1ec7n \u00e1p \u0111\u1ea7u v\u00e0o t\u1eeb Adapter \u0111\u1ec3 t\u1eeb \u0111\u00f3 t\u1ea1o ra l\u1ec7nh PACIN.<\/span><\/p>\n

      + N\u1ebfu \u0111i\u1ec7n \u00e1p \u0111\u1ea7u v\u00e0o Adapter >14V th\u00ec l\u1ec7nh PACIN s\u1ebd c\u00f3 m\u1ee9c logic 1 \u0111\u01b0a v\u00e0o ch\u00e2n G \u0111\u00e8n PQ11 v\u00e0 thu \u0111\u01b0\u1ee3c m\u1ee9c 0 \u1edf ch\u00e2n D. M\u1ee9c 0 n\u00e0y \u0111i\u1ec1u khi\u1ec3n cho Mosfet thu\u1eadn Q38 d\u1eabn.<\/span><\/p>\n

      + N\u1ebfu \u0111i\u1ec7n \u00e1p Adapter <15V th\u00ec l\u1ec7nh PACIN s\u1ebd c\u00f3 m\u1ee9c 0, sau khi \u0111\u1ea3o qua \u0111\u00e8n PQ11 s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c m\u1ee9c 1 v\u00e0 m\u1ee9c cao n\u00e0y s\u1ebd kh\u00f3a \u0111\u00e8n PQ38\u21d2 \u0111i\u1ec7n \u00e1p kh\u00f4ng v\u00e0o \u0111\u01b0\u1ee3c b\u00ean trong m\u00e1y.<\/span>\u00a0<\/span><\/p>\n

      – M\u1ea1ch b\u1ea3o v\u1ec7 s\u1ed1 2 theo d\u00f5i \u0111i\u1ec7n \u00e1p ra B+( ngu\u1ed3n \u0111\u1ea7u v\u00e0o) v\u00e0 theo d\u00f5i \u0111i\u1ec7n \u00e1p c\u1ea5p tr\u01b0\u1edbc 5V r\u1ed3i t\u1ea1o ra l\u1ec7nh ACON.<\/span><\/p>\n

      + N\u1ebfu \u0111\u01b0\u1eddng B+ kh\u00f4ng b\u1ecb ch\u1eadp v\u00e0 m\u00e1y c\u00f3 \u0111i\u1ec7n \u00e1p c\u1ea5p tr\u01b0\u1edbc 5V th\u00ec l\u1ec7nh ACON s\u1ebd c\u00f3 m\u1ee9c 1.<\/span><\/p>\n

      + N\u1ebfu \u0111\u01b0\u1eddng B+ b\u1ecb ch\u1eadp ho\u1eb7c c\u00f3 \u0111i\u1ec7n \u00e1p th\u1ea5p v\u00e0 \u0111i\u1ec7n \u00e1p 5 V c\u1ea5p tr\u01b0\u1edbc l\u1ea1i m\u1ea5t, khi \u0111\u00f3 l\u1ec7nh ACON s\u1ebd c\u00f3 m\u1ee9c logic 0 v\u00e0 d\u1eabn \u0111\u1ebfn ng\u1eaft \u0111\u00e8n Mosfet thu\u1eadn Q38 kh\u00f4ng cho \u0111i\u1ec7n v\u00e0o m\u00e1y.<\/span><\/p>\n

      – M\u1ea1ch b\u1ea3o v\u1ec7 3 xu\u1ea5t ph\u00e1t t\u1eeb chip SIO. Khi m\u00e1y c\u00f3 c\u00e1c s\u1ef1 c\u1ed1 nh\u01b0 ch\u1eadp ph\u1ee5 t\u1ea3i c\u1ee7a ngu\u1ed3n th\u1ee9 c\u1ea5p, ngu\u1ed3n VCORE\u2026SIO s\u1ebd ra l\u1ec7nh ACOFF c\u00f3 m\u1ee9c 1. L\u1ec7nh n\u00e0y \u0111\u1ea3o qua \u0111\u00e8n PQ15 v\u00e0 thu \u0111\u01b0\u1ee3c \u0111i\u1ec7n \u00e1p \u1edf ch\u00e2n C c\u00f3 m\u1ee9c 0\u21d2 \u0111\u1ea3o ti\u1ebfp qua \u0111\u00e8n PQ11 thu \u0111\u01b0\u1ee3c \u1edf ch\u00e2n D m\u1ee9c 1\u21d2 \u0111\u01b0a v\u00e0o ch\u00e2n G \u0111\u00e8n PQ38 \u0111\u1ec3 kh\u00f3a \u0111\u00e8n n\u00e0y l\u1ea1i kh\u00f4ng cho \u0111i\u1ec7n v\u00e0o m\u00e1y.<\/span><\/p>\n

      Nguy\u00ean l\u00fd m\u1ea1ch b\u1ea3o v\u1ec7 s\u1ed1 1<\/span><\/strong><\/p>\n

      \"Nguy\u00ean
      Nguy\u00ean l\u00fd m\u1ea1ch b\u1ea3o v\u1ec7 s\u1ed1 1<\/figcaption><\/figure>\n

      Ph\u00e2n t\u00edch nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng:<\/strong><\/span><\/p>\n

      – M\u1ea1ch b\u1ea3o v\u1ec7 s\u1ed1 1 s\u1eed d\u1ee5ng ph\u1ea7n t\u1eed OP AMPLY(IC khu\u1ebfch \u0111\u1ea1i thu\u1eadt to\u00e1n) \u0111\u1ec3 l\u00e0m m\u1ea1ch so s\u00e1nh nh\u1eb1m ph\u00e1t hi\u1ec7n ra \u0111i\u1ec7n \u00e1p Adapter c\u00f3 th\u1ecfa m\u00e3n \u0111\u1ec3 cho m\u00e1y l\u00e0m vi\u1ec7c hay kh\u00f4ng?<\/span><\/p>\n

      – T\u1eeb ch\u00e2n VIN( \u0111i\u1ec7n \u00e1p Adapter), \u0111i\u1ec7n \u00e1p cho \u0111i qua c\u1ea7u ph\u00e2n \u00e1p PR84 v\u00e0 PR32 nh\u1eb1m t\u1ea1o ra \u1edf \u0111i\u1ec3m gi\u1eefa m\u1ed9t \u0111i\u1ec7n \u00e1p b\u1eb1ng kho\u1ea3ng 23% \u0111i\u1ec7n \u00e1p VIN r\u1ed3i \u0111\u01b0a \u0111i\u1ec7n \u00e1p n\u00e0y v\u00e0o ch\u00e2n IN+ c\u1ee7a OP AMPLY.<\/span><\/p>\n

      – \u0110i\u1ec7n \u00e1p \u0111em so s\u00e1nh l\u00e0 \u0111i\u1ec7n \u00e1p 3.3V c\u1ee7a Pin CMOS. \u0110i\u1ec7n \u00e1p n\u00e0y \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o ch\u00e2n IN- c\u1ee7a OP AMPLY.<\/span><\/p>\n

      – Khi \u0111i\u1ec7n \u00e1p VIN >15V l\u00fac \u0111\u00f3 \u0111i\u1ec7n \u00e1p ch\u00e2n IN+ ( =15×0.23=3.4V) s\u1ebd l\u1edbn h\u01a1n ch\u00e2n IN- <\/span>(\u0111ang c\u00f3 3.3V).<\/span><\/p>\n

      \u21d2 k\u1ebft qu\u1ea3 l\u00e0 ta thu \u0111\u01b0\u1ee3c \u0111i\u1ec7n \u00e1p ra ch\u00e2n Out(1) c\u1ee7a OP AMPLY c\u00f3 m\u1ee9c 1\u21d2 l\u1ec7nh PACIN c\u00f3 m\u1ee9c 1. Theo ph\u00e2n t\u00edch \u1edf tr\u00ean th\u00ec khi PACIN c\u00f3 m\u1ee9c 1 s\u1ebd \u0111i\u1ec1u khi\u1ec3n cho \u0111\u00e8n Mosfet Q38 d\u1eabn \u0111\u00f3ng \u0111i\u1ec7n v\u00e0o b\u00ean trong m\u00e1y.<\/span><\/p>\n

      – Khi VIN<14.5V l\u00fac \u0111\u00f3 ch\u00e2n IN+ c\u1ee7a OP AMPLY s\u1ebd nh\u1ecf h\u01a1n \u0111i\u1ec7n \u00e1p \u1edf ch\u00e2n IN-\u21d2 IC OP AMPLY s\u1ebd cho ra m\u1ee9c 0 \u1edf ch\u00e2n Out(1)\u21d2 l\u1ec7nh PACIN c\u00f3 m\u1ee9c 0 s\u1ebd \u0111i\u1ec1u khi\u1ec3n cho \u0111\u00e8n Mosfet thu\u1eadn Q38 t\u1eaft kh\u00f4ng cho \u0111i\u1ec7n \u00e1p v\u00e0o m\u00e1y.<\/span><\/p>\n

      Ghi ch\u00fa:<\/strong><\/span><\/p>\n

      – M\u1ee9c logic 1 ngh\u0129a l\u00e0 c\u00f3 \u0111i\u1ec7n \u00e1p t\u1eeb 1V tr\u1edf l\u00ean hay c\u00f2n g\u1ecdi l\u00e0 m\u1ee9c cao \u201cH\u201d<\/span><\/p>\n

      – M\u1ee9c logic 0 ngh\u0129a l\u00e0 c\u00f3 \u0111i\u1ec7n \u00e1p =0V hay c\u00f2n g\u1ecdi l\u00e0 m\u1ee9c th\u1ea5p \u201cL\u201d<\/span><\/p>\n

      Nguy\u00ean l\u00fd m\u1ea1ch b\u1ea3o v\u1ec7 s\u1ed1 2<\/strong><\/span><\/p>\n

      \"Nguy\u00ean
      Nguy\u00ean l\u00fd m\u1ea1ch b\u1ea3o v\u1ec7 s\u1ed1 2<\/figcaption><\/figure>\n

      Ph\u00e2n t\u00edch nguy\u00ean l\u00fd m\u1ea1ch:<\/strong><\/span><\/p>\n

      – Theo m\u1ea1ch \u1edf tr\u00ean ta \u0111\u00e3 ph\u00e2n t\u00edch th\u00ec khi l\u1ec7nh ACON c\u00f3 m\u1ee9c 1 s\u1ebd cho ph\u00e9p \u0111i\u1ec7n v\u00e0o m\u00e1y, m\u1ee9c 0 s\u1ebd ng\u1eaft \u0111i\u1ec7n v\u00e0o m\u00e1y. M\u1ea1ch b\u1ea3o v\u1ec7 2 l\u00e0 m\u1ea1ch so s\u00e1nh gi\u1eefa hai \u0111i\u1ec7n \u00e1p:<\/span><\/p>\n

      + M\u1ed9t \u0111i\u1ec7n \u00e1p \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb Pin CMOS( RTCVREF) sau khi cho \u0111i qua c\u1ea7u ph\u00e2n \u00e1p PR153 v\u00e0 PR155 t\u1ea1o ra \u00e1p kho\u1ea3ng 3V \u0111\u01b0a v\u00e0o ch\u00e2n IN- c\u1ee7a IC khu\u1ebfch \u0111\u1ea1i thu\u1eadt to\u00e1n.<\/span><\/p>\n

      + M\u1ed9t \u0111i\u1ec7n \u00e1p \u0111\u01b0\u1ee3c l\u1ea5y m\u1eabu t\u1eeb ngu\u1ed3n B+ sau khi cho \u0111i qua c\u1ea7u ph\u00e2n \u00e1p PR157 v\u00e0 PR158.<\/span><\/p>\n

      – Ban \u0111\u1ea7u khi ch\u01b0a c\u00f3 \u0111i\u1ec7n \u00e1p +5VALWP( \u0111i\u1ec7n \u00e1p 5V c\u1ea5p tr\u01b0\u1edbc) n\u00ean \u0111\u00e8n PQ17 t\u1eaft\u21d2 ch\u00e2n G \u0111\u00e8n PQ10 c\u00f3 m\u1ee9c cao( do l\u1ec7nh PACIN \u0111ang c\u00f3 m\u1ee9c cao) v\u00ec v\u1eady \u0111\u00e8n PQ10 d\u1eabn. L\u00fac n\u00e0y \u0111i\u1ec7n tr\u1edf PR156 \u0111ang \u0111\u01b0\u1ee3c tho\u00e1t mass n\u00ean PR156 \u0111\u1ea5u song song v\u1edbi PR158\u21d2 h\u00ecnh th\u00e0nh n\u00ean c\u1ea7u ph\u00e2n \u00e1p PR157 n\u1ed1i ti\u1ebfp v\u1edbi (PR156 song song PR158) t\u1ea1o ra \u0111i\u1ec7n \u00e1p l\u1ea5y m\u1eabu \u0111\u01b0a v\u00e0o ch\u00e2n IN+ c\u1ee7a OP AMPLY. Theo t\u00ednh to\u00e1n th\u00ec \u0111i\u1ec7n \u00e1p n\u00e0y b\u1eb1ng kho\u1ea3ng 23% \u0111i\u1ec7n \u00e1p B+.<\/span><\/p>\n

      – Khi \u0111i\u1ec7n \u00e1p B+ >13V th\u00ec l\u00fac \u0111\u00f3 \u0111i\u1ec7n \u00e1p \u0111\u01b0a v\u00e0o ch\u00e2n IN+ s\u1ebd l\u1edbn h\u01a1n \u0111i\u1ec7n \u00e1p \u0111\u01b0a v\u00e0o ch\u00e2n IN- \u21d2 ta s\u1ebd thu \u0111\u01b0\u1ee3c l\u1ec7nh ACON c\u00f3 m\u1ee9c 1 cho ph\u00e9p m\u1ea1ch c\u00f4ng t\u1eafc ti\u1ebfp t\u1ee5c \u0111\u00f3ng \u0111i\u1ec7n.<\/span>
      \nKhi l\u1ec7nh ACON c\u00f3 m\u1ee9c 1 th\u00ec l\u1ec7nh MAINPWON c\u0169ng c\u00f3 m\u1ee9c 1, l\u1ec7nh n\u00e0y s\u1ebd \u0111i\u1ec1u khi\u1ec3n cho ngu\u1ed3n c\u1ea5p tr\u01b0\u1edbc 5V, 3V ho\u1ea1t \u0111\u1ed9ng. Khi ngu\u1ed3n c\u1ea5p tr\u01b0\u1edbc 5V ho\u1ea1t \u0111\u1ed9ng th\u00ec \u0111\u00e8n PQ17 d\u1eabn \u21d2 \u0111\u00e8n PQ10 t\u1eaft \u21d2 \u0111i\u1ec7n tr\u1edf PR156 b\u1ecb h\u1edf m\u1ea1ch. L\u00fac n\u00e0y \u0111i\u1ec7n \u00e1p B+ c\u00f3 s\u1ee5t \u00e1p m\u1ed9t ch\u00fat th\u00ec \u0111i\u1ec7n \u00e1p ch\u00e2n IN+ v\u1eabn cao h\u01a1n ch\u00e2n IN- v\u00e0 m\u1ea1ch v\u1eabn duy tr\u00ec s\u1ef1 ho\u1ea1t \u0111\u1ed9ng.<\/span><\/p>\n

      – N\u1ebfu \u0111i\u1ec7n \u00e1p B+ qu\u00e1 th\u1ea5p( khi \u0111\u01b0\u1eddng B+ b\u1ecb ch\u1eadp) th\u00ec \u0111i\u1ec7n \u00e1p \u0111\u01b0a v\u00e0o ch\u00e2n IN+ s\u1ebd th\u1ea5p h\u01a1n ch\u00e2n IN- \u21d2 k\u1ebft qu\u1ea3 l\u00e0 ta thu \u0111\u01b0\u1ee3c l\u1ec7nh ACON c\u00f3 m\u1ee9c th\u1ea5p, \u0111\u1ed3ng th\u1eddi l\u1ec7nh MAINPWON c\u0169ng c\u00f3 m\u1ee9c th\u1ea5p. L\u1ec7nh ACON c\u00f3 m\u1ee9c th\u1ea5p s\u1ebd kh\u00f3a \u0111\u00e8n c\u00f4ng t\u1eafc \u0111\u1ea7u v\u00e0o l\u1ea1i; c\u00f2n l\u1ec7nh MAINPWON c\u00f3 m\u1ee9c th\u1ea5p s\u1ebd ng\u1eaft l\u1ec7nh \u0111i\u1ec1u khi\u1ec3n s\u1ef1 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u00e8n c\u1ea5p tr\u01b0\u1edbc 5V, 3V.<\/span><\/p>\n

      M\u1ecdi chi ti\u1ebft xin vui l\u00f2ng li\u00ean h\u1ec7:<\/i><\/p>\n

      C\u00d4NG TY C\u1ed4 PH\u1ea6N H\u1eccC VI\u1ec6N IT<\/strong><\/p>\n

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