{"id":2378,"date":"2026-09-02T01:02:33","date_gmt":"2026-09-01T18:02:33","guid":{"rendered":"https:\/\/yourapx.com\/?p=2378"},"modified":"2026-09-02T01:02:33","modified_gmt":"2026-09-01T18:02:33","slug":"igbt","status":"publish","type":"post","link":"https:\/\/yourapx.com\/?p=2378","title":{"rendered":"IGBT l\u00e0 g\u00ec? K\u00fd hi\u1ec7u, c\u00e1ch m\u1eafc, c\u00e1ch \u0111o v\u00e0 \u1ee9ng d\u1ee5ng"},"content":{"rendered":"

1. IGBT l\u00e0 g\u00ec v\u00e0 c\u00f3 vai tr\u00f2 g\u00ec?<\/h2>\n

IGBT l\u00e0 linh ki\u1ec7n \u0111\u00f3ng c\u1eaft c\u00f4ng su\u1ea5t \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng c\u1ed5ng c\u00e1ch \u0111i\u1ec7n, th\u01b0\u1eddng d\u00f9ng \u1edf \u0111i\u1ec7n \u00e1p v\u00e0 c\u00f4ng su\u1ea5t cao. IGBT k\u1ebft h\u1ee3p c\u00e1ch \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng \u0111i\u1ec7n \u00e1p \u1edf gate v\u1edbi \u0111\u01b0\u1eddng d\u1eabn collector\u2013emitter.<\/p>\n

Ph\u1ea7n quan tr\u1ecdng nh\u1ea5t l\u00e0 x\u00e1c \u0111\u1ecbnh linh ki\u1ec7n n\u00e0y \u0111ang l\u00e0m nhi\u1ec7m v\u1ee5 g\u00ec trong kh\u1ed1i m\u1ea1ch tr\u01b0\u1edbc khi \u0111o ho\u1eb7c ch\u1ecdn linh ki\u1ec7n thay th\u1ebf.<\/p>\n

2. K\u00fd hi\u1ec7u IGBT trong s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n<\/h2>\n

K\u00fd hi\u1ec7u IGBT c\u00f3 gate (G), collector (C) v\u00e0 emitter (E). M\u1ed9t s\u1ed1 module t\u00edch h\u1ee3p diode h\u1ed3i ti\u1ebfp; ph\u1ea3i \u0111\u1ecdc \u0111\u00fang k\u00fd hi\u1ec7u v\u00e0 s\u01a1 \u0111\u1ed3 ch\u00e2n trong datasheet.<\/p>\n

Transistor th\u01b0\u1eddng mang m\u00e3 Q. K\u00fd hi\u1ec7u Q1, Q2\u2026 ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1ecdc c\u00f9ng t\u00ean c\u00e1c c\u1ef1c v\u00e0 chi\u1ec1u k\u00fd hi\u1ec7u tr\u00ean s\u01a1 \u0111\u1ed3.<\/p>\n

\"K\u00fd
K\u00fd hi\u1ec7u v\u00e0 quy \u01b0\u1edbc ch\u00e2n c\u1ee7a IGBT trong s\u01a1 \u0111\u1ed3 m\u1ea1ch \u0111i\u1ec7n<\/figcaption><\/figure>\n

3. C\u1ea5u t\u1ea1o, h\u00ecnh d\u1ea1ng v\u00e0 ki\u1ec3u \u0111\u00f3ng g\u00f3i<\/h2>\n

C\u1ea5u tr\u00fac b\u00e1n d\u1eabn nhi\u1ec1u l\u1edbp t\u1ea1o c\u1ed5ng c\u00e1ch \u0111i\u1ec7n v\u00e0 \u0111\u01b0\u1eddng d\u1eabn c\u00f4ng su\u1ea5t. \u0110i\u1ec7n \u00e1p b\u00e3o h\u00f2a, \u0111i\u1ec7n t\u00edch gate, \u0111u\u00f4i d\u00f2ng khi t\u1eaft, v\u00f9ng l\u00e0m vi\u1ec7c an to\u00e0n v\u00e0 nhi\u1ec7t \u0111\u1ed9 m\u1ed1i n\u1ed1i quy\u1ebft \u0111\u1ecbnh t\u1ed5n hao v\u00e0 \u0111\u1ed9 tin c\u1eady.<\/p>\n

Nh\u1eefng ki\u1ec3u v\u1ecf v\u00e0 ki\u1ec3u l\u1eafp th\u01b0\u1eddng g\u1eb7p g\u1ed3m:<\/p>\n

    \n
  • TO-220\/TO-247<\/li>\n
  • D2PAK<\/li>\n
  • Module half-bridge<\/li>\n
  • Module six-pack<\/li>\n
  • Module c\u00f3 \u0111\u1ebf c\u00e1ch \u0111i\u1ec7n<\/li>\n<\/ul>\n
    \"H\u00ecnh
    H\u00ecnh k\u1ef9 thu\u1eadt tham kh\u1ea3o 1: H\u00ecnh d\u1ea1ng th\u1ef1c t\u1ebf v\u00e0 ki\u1ec3u \u0111\u00f3ng g\u00f3i c\u1ee7a IGBT. Ngu\u1ed3n: Industrial Control, trang 100.<\/figcaption><\/figure>\n
    \"IGBT
    \u1ea2nh th\u1ef1c t\u1ebf 1 c\u1ee7a IGBT d\u00f9ng \u0111\u1ec3 nh\u1eadn bi\u1ebft h\u00ecnh d\u1ea1ng t\u1ed5ng th\u1ec3.<\/figcaption><\/figure>\n

    4. C\u00e1c ch\u1ee7ng lo\u1ea1i ph\u1ed5 bi\u1ebfn<\/h2>\n

    M\u1ed7i ch\u1ee7ng lo\u1ea1i c\u00f3 \u01b0u \u0111i\u1ec3m, gi\u1edbi h\u1ea1n v\u00e0 m\u00f4i tr\u01b0\u1eddng s\u1eed d\u1ee5ng kh\u00e1c nhau; kh\u00f4ng n\u00ean thay l\u1eabn ch\u1ec9 v\u00ec c\u00f3 h\u00ecnh d\u1ea1ng g\u1ea7n gi\u1ed1ng.<\/p>\n

      \n
    • IGBT r\u1eddi<\/li>\n
    • IGBT c\u00f3 diode h\u1ed3i ti\u1ebfp<\/li>\n
    • Module half-bridge<\/li>\n
    • Module six-pack<\/li>\n<\/ul>\n
      \"IGBT
      \u1ea2nh th\u1ef1c t\u1ebf 2 c\u1ee7a IGBT d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

      5. C\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ea7n hi\u1ec3u<\/h2>\n
        \n
      • VCES:<\/strong> c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u1ecdc c\u00f9ng \u0111\u01a1n v\u1ecb, \u0111i\u1ec1u ki\u1ec7n \u0111o v\u00e0 gi\u1edbi h\u1ea1n do nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f4ng b\u1ed1.<\/li>\n
      • IC:<\/strong> c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u1ecdc c\u00f9ng \u0111\u01a1n v\u1ecb, \u0111i\u1ec1u ki\u1ec7n \u0111o v\u00e0 gi\u1edbi h\u1ea1n do nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f4ng b\u1ed1.<\/li>\n
      • VCE(sat):<\/strong> c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u1ecdc c\u00f9ng \u0111\u01a1n v\u1ecb, \u0111i\u1ec1u ki\u1ec7n \u0111o v\u00e0 gi\u1edbi h\u1ea1n do nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f4ng b\u1ed1.<\/li>\n
      • \u0110i\u1ec7n t\u00edch gate:<\/strong> c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u1ecdc c\u00f9ng \u0111\u01a1n v\u1ecb, \u0111i\u1ec1u ki\u1ec7n \u0111o v\u00e0 gi\u1edbi h\u1ea1n do nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f4ng b\u1ed1.<\/li>\n
      • N\u0103ng l\u01b0\u1ee3ng \u0111\u00f3ng\/c\u1eaft:<\/strong> c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u1ecdc c\u00f9ng \u0111\u01a1n v\u1ecb, \u0111i\u1ec1u ki\u1ec7n \u0111o v\u00e0 gi\u1edbi h\u1ea1n do nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f4ng b\u1ed1.<\/li>\n
      • SOA:<\/strong> c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u1ecdc c\u00f9ng \u0111\u01a1n v\u1ecb, \u0111i\u1ec1u ki\u1ec7n \u0111o v\u00e0 gi\u1edbi h\u1ea1n do nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f4ng b\u1ed1.<\/li>\n
      • Nhi\u1ec7t tr\u1edf:<\/strong> cho bi\u1ebft ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 cho ph\u00e9p v\u00e0 \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ebfn \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh, tu\u1ed5i th\u1ecd.<\/li>\n<\/ul>\n
        \"IGBT
        \u1ea2nh th\u1ef1c t\u1ebf 3 c\u1ee7a IGBT d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

        6. C\u00f4ng th\u1ee9c to\u00e1n h\u1ecdc v\u00e0 v\u1eadt l\u00fd<\/h2>\n

        C\u00e1c c\u00f4ng th\u1ee9c d\u01b0\u1edbi \u0111\u00e2y m\u00f4 t\u1ea3 quan h\u1ec7 gi\u1eefa nh\u1eefng \u0111\u1ea1i l\u01b0\u1ee3ng quan tr\u1ecdng c\u1ee7a linh ki\u1ec7n. U l\u00e0 \u0111i\u1ec7n \u00e1p, I l\u00e0 d\u00f2ng \u0111i\u1ec7n, R l\u00e0 \u0111i\u1ec7n tr\u1edf, P l\u00e0 c\u00f4ng su\u1ea5t, E ho\u1eb7c W l\u00e0 n\u0103ng l\u01b0\u1ee3ng, f l\u00e0 t\u1ea7n s\u1ed1 v\u00e0 t l\u00e0 th\u1eddi gian; \u0111\u01a1n v\u1ecb l\u1ea7n l\u01b0\u1ee3t l\u00e0 V, A, \u03a9, W, J, Hz v\u00e0 s.<\/p>\n

        \n
        T\u1ed5n hao d\u1eabn g\u1ea7n \u0111\u00fang<\/figcaption>
        Pcond<\/sub> \u2248 UCE(sat)<\/sub> \u00d7 IC,rms<\/sub><\/div>\n
        \n

        \u00dd ngh\u0129a:<\/strong> \u01af\u1edbc l\u01b0\u1ee3ng nhi\u1ec7t ph\u00e1t sinh khi IGBT \u0111ang d\u1eabn.<\/p>\n

        \u0110i\u1ec1u ki\u1ec7n \u00e1p d\u1ee5ng:<\/strong> D\u00f9ng gi\u00e1 tr\u1ecb VCE(sat) t\u1ea1i \u0111\u00fang d\u00f2ng, \u0111i\u1ec7n \u00e1p gate v\u00e0 nhi\u1ec7t \u0111\u1ed9 trong datasheet.<\/p>\n<\/div>\n<\/figure>\n

        T\u1ed5n hao chuy\u1ec3n m\u1ea1ch<\/figcaption>
        Psw<\/sub> \u2248 (Eon<\/sub> + Eoff<\/sub>) \u00d7 fsw<\/sub><\/div>\n
        \n

        \u00dd ngh\u0129a:<\/strong> N\u0103ng l\u01b0\u1ee3ng m\u1ea5t trong m\u1ed7i l\u1ea7n b\u1eadt v\u00e0 t\u1eaft nh\u00e2n v\u1edbi t\u1ea7n s\u1ed1 chuy\u1ec3n m\u1ea1ch.<\/p>\n

        \u0110i\u1ec1u ki\u1ec7n \u00e1p d\u1ee5ng:<\/strong> Eon v\u00e0 Eoff ph\u1ea3i l\u1ea5y \u1edf \u0111i\u1ec1u ki\u1ec7n g\u1ea7n v\u1edbi m\u1ea1ch th\u1ef1c t\u1ebf.<\/p>\n<\/div>\n<\/figure>\n

        Nhi\u1ec7t \u0111\u1ed9 m\u1ed1i n\u1ed1i<\/figcaption>
        TJ<\/sub> \u2248 TC<\/sub> + Ptotal<\/sub> \u00d7 R\u03b8JC<\/sub><\/div>\n
        \n

        \u00dd ngh\u0129a:<\/strong> \u01af\u1edbc l\u01b0\u1ee3ng nhi\u1ec7t \u0111\u1ed9 chip t\u1eeb nhi\u1ec7t \u0111\u1ed9 v\u1ecf v\u00e0 t\u1ed5ng c\u00f4ng su\u1ea5t t\u1ed5n hao.<\/p>\n

        \u0110i\u1ec1u ki\u1ec7n \u00e1p d\u1ee5ng:<\/strong> C\u1ea7n c\u1ed9ng tr\u1edf nhi\u1ec7t c\u1ee7a keo, pad, t\u1ea3n nhi\u1ec7t khi t\u00ednh to\u00e0n b\u1ed9 \u0111\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t.<\/p>\n<\/div>\n<\/figure>\n<\/div>\n

        K\u00fd hi\u1ec7u c\u00f3 ch\u1ec9 s\u1ed1 d\u01b0\u1edbi d\u00f9ng \u0111\u1ec3 ch\u1ec9 \u0111\u00fang v\u1ecb tr\u00ed ho\u1eb7c tr\u1ea1ng th\u00e1i \u0111o, ch\u1eb3ng h\u1ea1n Ura<\/sub> l\u00e0 \u0111i\u1ec7n \u00e1p \u0111\u1ea7u ra v\u00e0 Ushunt<\/sub> l\u00e0 \u0111i\u1ec7n \u00e1p tr\u00ean \u0111i\u1ec7n tr\u1edf shunt. V\u1edbi k\u00fd hi\u1ec7u ri\u00eang c\u1ee7a t\u1eebng h\u1ecd linh ki\u1ec7n, c\u1ea7n \u0111\u1ecdc \u0111\u1ecbnh ngh\u0129a ngay trong datasheet.<\/p>\n

        C\u00f4ng th\u1ee9c l\u00fd t\u01b0\u1edfng ch\u1ec9 \u0111\u00fang trong \u0111i\u1ec1u ki\u1ec7n \u0111\u00e3 n\u00eau. Khi ch\u1ecdn linh ki\u1ec7n th\u1eadt ph\u1ea3i t\u00ednh th\u00eam dung sai, nhi\u1ec7t \u0111\u1ed9, t\u1ea7n s\u1ed1, t\u1ea3i v\u00e0 gi\u1edbi h\u1ea1n trong datasheet.<\/p>\n

        \"IGBT
        \u1ea2nh th\u1ef1c t\u1ebf 4 c\u1ee7a IGBT d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

        7. C\u00e1c c\u00e1ch m\u1eafc IGBT trong m\u1ea1ch \u0111i\u1ec7n t\u1eed<\/h2>\n

        C\u00e1c c\u00e1ch m\u1eafc \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp t\u1eeb d\u1ec5 nh\u1eadn bi\u1ebft \u0111\u1ebfn \u1ee9ng d\u1ee5ng n\u00e2ng cao. \u1ede m\u1ed7i s\u01a1 \u0111\u1ed3, h\u00e3y theo d\u00f5i \u0111i\u1ec3m n\u1ed1i ngu\u1ed3n, mass, \u0111\u1ea7u v\u00e0o, \u0111\u1ea7u ra v\u00e0 chi\u1ec1u d\u00f2ng \u0111i\u1ec7n tr\u01b0\u1edbc khi t\u00ednh to\u00e1n.<\/p>\n

        \n
        \n

        C\u00e1c c\u00e1ch m\u1eafc th\u01b0\u1eddng d\u00f9ng<\/h3>\n

        1. M\u1eafc kh\u00f3a ph\u00eda th\u1ea5p v\u1edbi IGBT<\/h4>\n

        Nguy\u00ean l\u00fd:<\/strong> Emitter tham chi\u1ebfu mass c\u00f4ng su\u1ea5t, t\u1ea3i n\u1ed1i v\u1ec1 ngu\u1ed3n d\u01b0\u01a1ng; driver ph\u1ea3i c\u1ea5p v\u00e0 x\u1ea3 \u0111i\u1ec7n t\u00edch gate \u0111\u1ee7 nhanh.<\/p>\n

        2. M\u1eafc half-bridge IGBT<\/h4>\n

        Nguy\u00ean l\u00fd:<\/strong> Hai IGBT \u0111\u00f3ng c\u1eaft lu\u00e2n phi\u00ean; c\u1ea7n driver c\u00e1ch ly ho\u1eb7c high-side, dead-time v\u00e0 b\u1ea3o v\u1ec7 d\u1eabn ch\u00e9o.<\/p>\n

        3. M\u1eafc c\u1ea7u H IGBT<\/h4>\n

        Nguy\u00ean l\u00fd:<\/strong> B\u1ed1n kh\u00f3a \u0111i\u1ec1u khi\u1ec3n d\u00f2ng hai chi\u1ec1u qua t\u1ea3i; tr\u00ecnh t\u1ef1 \u0111\u00f3ng c\u1eaft v\u00e0 diode h\u1ed3i ti\u1ebfp ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m tra theo t\u1eebng tr\u1ea1ng th\u00e1i.<\/p>\n<\/section>\n<\/div>\n

        8. V\u00ed d\u1ee5 t\u00ednh to\u00e1n v\u00e0 \u1ee9ng d\u1ee5ng<\/h2>\n

        N\u1ebfu datasheet cho Eon + Eoff b\u1eb1ng 4 mJ t\u1ea1i \u0111i\u1ec1u ki\u1ec7n g\u1ea7n m\u1ea1ch th\u1ef1c t\u1ebf v\u00e0 t\u1ea7n s\u1ed1 \u0111\u00f3ng c\u1eaft l\u00e0 20 kHz, t\u1ed5n hao chuy\u1ec3n m\u1ea1ch g\u1ea7n \u0111\u00fang l\u00e0 80 W; con s\u1ed1 n\u00e0y ch\u01b0a g\u1ed3m t\u1ed5n hao d\u1eabn.<\/p>\n

        \"H\u00ecnh
        H\u00ecnh k\u1ef9 thu\u1eadt tham kh\u1ea3o 2: H\u00ecnh k\u1ef9 thu\u1eadt tham kh\u1ea3o v\u1ec1 IGBT. Ngu\u1ed3n: Analog Circuits Cookbook, trang 260.<\/figcaption><\/figure>\n
        \"IGBT
        \u1ea2nh th\u1ef1c t\u1ebf 5 c\u1ee7a IGBT d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

        9. C\u00e1ch \u0111\u1ecdc m\u00e3 v\u00e0 datasheet<\/h2>\n

        \u0110\u1ecdc VCES, IC theo nhi\u1ec7t \u0111\u1ed9, VCE(sat), Eon\/Eoff, Qg, R\u03b8JC, SOA, diode h\u1ed3i ti\u1ebfp v\u00e0 s\u01a1 \u0111\u1ed3 ch\u00e2n \u1edf \u0111\u00fang \u0111i\u1ec1u ki\u1ec7n \u0111o.<\/p>\n

        H\u00e3y ph\u00e2n bi\u1ec7t th\u00f4ng s\u1ed1 l\u00e0m vi\u1ec7c khuy\u1ebfn ngh\u1ecb v\u1edbi gi\u1edbi h\u1ea1n tuy\u1ec7t \u0111\u1ed1i. Gi\u1edbi h\u1ea1n tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ee9c n\u00ean duy tr\u00ec trong qu\u00e1 tr\u00ecnh v\u1eadn h\u00e0nh.<\/p>\n

        \"IGBT
        \u1ea2nh th\u1ef1c t\u1ebf 6 c\u1ee7a IGBT d\u00f9ng \u0111\u1ec3 quan s\u00e1t chi ti\u1ebft tr\u00ean linh ki\u1ec7n ho\u1eb7c bo m\u1ea1ch.<\/figcaption><\/figure>\n

        10. C\u00e1ch \u0111o v\u00e0 ki\u1ec3m tra tr\u00ean bo m\u1ea1ch<\/h2>\n
          \n
        1. X\u00e1c \u0111\u1ecbnh \u0111\u00fang G, C, E v\u00e0 diode t\u00edch h\u1ee3p theo datasheet<\/li>\n
        2. Ng\u1eaft ngu\u1ed3n, x\u1ea3 t\u1ee5 DC-link r\u1ed3i ki\u1ec3m tra ch\u1eadp C\u2013E<\/li>\n
        3. Ki\u1ec3m tra c\u00e1ch \u0111i\u1ec7n gate v\u00e0 \u0111i\u1ec7n tr\u1edf gate<\/li>\n
        4. Khi ch\u1ea1y, \u0111o d\u1ea1ng s\u00f3ng VGE, VCE v\u00e0 nhi\u1ec7t b\u1eb1ng thi\u1ebft b\u1ecb \u0111o c\u00f3 c\u00e1ch ly ph\u00f9 h\u1ee3p<\/li>\n<\/ol>\n

          Khi \u0111o tr\u1ef1c ti\u1ebfp tr\u00ean bo, c\u00e1c linh ki\u1ec7n n\u1ed1i v\u1edbi c\u00f9ng n\u00fat m\u1ea1ch c\u00f3 th\u1ec3 l\u00e0m k\u1ebft qu\u1ea3 kh\u00e1c tr\u1ecb s\u1ed1 ri\u00eang c\u1ee7a linh ki\u1ec7n. N\u1ebfu c\u1ea7n \u0111o \u0111\u1ed9c l\u1eadp, ch\u1ec9 th\u00e1o m\u1ed9t \u0111\u1ea7u ho\u1eb7c ch\u00e2n \u0111o ph\u00f9 h\u1ee3p sau khi \u0111\u00e3 ng\u1eaft ngu\u1ed3n v\u00e0 x\u1ea3 h\u1ebft \u0111i\u1ec7n t\u00edch.<\/p>\n

          11. D\u1ea1ng h\u01b0 h\u1ecfng v\u00e0 nguy\u00ean nh\u00e2n<\/h2>\n

          D\u1ea5u hi\u1ec7u c\u00f3 th\u1ec3 quan s\u00e1t ho\u1eb7c \u0111o \u0111\u01b0\u1ee3c<\/h3>\n
            \n
          • Ch\u1eadp C\u2013E<\/li>\n
          • R\u00f2 ho\u1eb7c th\u1ee7ng gate<\/li>\n
          • Kh\u00f4ng t\u1eaft h\u1ebft<\/li>\n
          • T\u1ed5n hao t\u0103ng b\u1ea5t th\u01b0\u1eddng<\/li>\n
          • N\u1ee9t ho\u1eb7c bong m\u1ed1i n\u1ed1i module<\/li>\n<\/ul>\n

            Nh\u1eefng nguy\u00ean nh\u00e2n c\u1ea7n ki\u1ec3m tra<\/h3>\n
              \n
            • V\u01b0\u1ee3t SOA<\/li>\n
            • D\u1eabn ch\u00e9o<\/li>\n
            • Xung \u00e1p t\u1ea3i c\u1ea3m<\/li>\n
            • Driver y\u1ebfu<\/li>\n
            • T\u1ea3n nhi\u1ec7t k\u00e9m<\/li>\n<\/ul>\n

              M\u1ed9t d\u1ea5u hi\u1ec7u c\u00f3 th\u1ec3 xu\u1ea5t ph\u00e1t t\u1eeb nhi\u1ec1u nguy\u00ean nh\u00e2n. Ch\u1ec9 k\u1ebft lu\u1eadn linh ki\u1ec7n h\u1ecfng sau khi k\u1ebft h\u1ee3p k\u1ebft qu\u1ea3 \u0111o, s\u01a1 \u0111\u1ed3 m\u1ea1ch v\u00e0 \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh.<\/p>\n

              12. C\u00e1ch l\u1ef1a ch\u1ecdn linh ki\u1ec7n thay th\u1ebf<\/h2>\n
                \n
              • \u0110\u00fang s\u01a1 \u0111\u1ed3 ch\u00e2n v\u00e0 lo\u1ea1i module<\/li>\n
              • VCES, IC v\u00e0 SOA ph\u00f9 h\u1ee3p<\/li>\n
              • VCE(sat), Eon\/Eoff v\u00e0 Qg ph\u00f9 h\u1ee3p driver<\/li>\n
              • \u0110\u00fang c\u00e1ch \u0111i\u1ec7n v\u00e0 \u0111\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t<\/li>\n<\/ul>\n

                13. C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n

                C\u00f3 th\u1ec3 \u0111o IGBT tr\u1ef1c ti\u1ebfp tr\u00ean bo m\u1ea1ch kh\u00f4ng?<\/h3>\n

                C\u00f3 th\u1ec3 ki\u1ec3m tra s\u01a1 b\u1ed9 sau khi \u0111\u00e3 ng\u1eaft ngu\u1ed3n v\u00e0 x\u1ea3 \u0111i\u1ec7n t\u00edch. Tuy nhi\u00ean, nh\u1eefng nh\u00e1nh m\u1ea1ch n\u1ed1i song song ho\u1eb7c linh ki\u1ec7n b\u1ea3o v\u1ec7 c\u00f3 th\u1ec3 l\u00e0m sai k\u1ebft qu\u1ea3; khi c\u1ea7n \u0111o \u0111\u1ed9c l\u1eadp ph\u1ea3i t\u00e1ch ch\u00e2n ph\u00f9 h\u1ee3p v\u00e0 \u0111\u1ed1i chi\u1ebfu s\u01a1 \u0111\u1ed3.<\/p>\n

                C\u00f3 th\u1ec3 d\u00f9ng linh ki\u1ec7n c\u00f3 th\u00f4ng s\u1ed1 cao h\u01a1n \u0111\u1ec3 thay th\u1ebf kh\u00f4ng?<\/h3>\n

                Tr\u01b0\u1edbc h\u1ebft, linh ki\u1ec7n thay th\u1ebf ph\u1ea3i \u0111\u00fang ch\u1ee9c n\u0103ng v\u00e0 tr\u1ecb s\u1ed1 ch\u00ednh. M\u1ed9t s\u1ed1 gi\u1edbi h\u1ea1n nh\u01b0 c\u00f4ng su\u1ea5t ho\u1eb7c \u0111i\u1ec7n \u00e1p c\u00f3 th\u1ec3 ch\u1ecdn cao h\u01a1n, nh\u01b0ng k\u00edch th\u01b0\u1edbc, \u0111\u1eb7c t\u00ednh xung, t\u1ea7n s\u1ed1 v\u00e0 nhi\u1ec7t v\u1eabn ph\u1ea3i ph\u00f9 h\u1ee3p. V\u1edbi linh ki\u1ec7n nhi\u1ec1u ch\u00e2n, s\u01a1 \u0111\u1ed3 ch\u00e2n b\u1eaft bu\u1ed9c ph\u1ea3i t\u01b0\u01a1ng th\u00edch.<\/p>\n

                \n

                T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n

                C\u00e1c t\u00e0i li\u1ec7u d\u01b0\u1edbi \u0111\u00e2y \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 \u0111\u1ed1i chi\u1ebfu k\u00fd hi\u1ec7u, nguy\u00ean l\u00fd, th\u00f4ng s\u1ed1 v\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111o ki\u1ec3m c\u1ee7a linh ki\u1ec7n.<\/p>\n

                  \n
                1. [1] Industrial Control<\/strong> \u2014 trang 100, trang 103.<\/li>\n
                2. [2] Electrical Circuits<\/strong> \u2014 trang 1192, trang 1193.<\/li>\n
                3. [3] McGraw Hill-Principles and applications of Electrical Engineering<\/strong> \u2014 trang 513, trang 690.<\/li>\n
                4. [4] Analog Circuits Cookbook<\/strong> \u2014 trang 342, trang 260.<\/li>\n<\/ol>\n<\/section>\n

                  14. K\u1ebft lu\u1eadn<\/h2>\n

                  Mu\u1ed1n s\u1eed d\u1ee5ng linh ki\u1ec7n n\u00e0y \u0111\u00fang c\u00e1ch, ng\u01b0\u1eddi \u0111\u1ecdc c\u1ea7n nh\u1eadn d\u1ea1ng \u0111\u00fang lo\u1ea1i, hi\u1ec3u k\u00fd hi\u1ec7u v\u00e0 \u0111\u01b0\u1eddng k\u1ebft n\u1ed1i, t\u00ednh \u0111\u01b0\u1ee3c \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c, \u0111o ki\u1ec3m an to\u00e0n v\u00e0 \u0111\u1ed1i chi\u1ebfu datasheet tr\u01b0\u1edbc khi thay th\u1ebf.<\/p>\n","protected":false},"excerpt":{"rendered":"

                  T\u00ecm hi\u1ec3u IGBT: k\u00fd hi\u1ec7u, ki\u1ec3u \u0111\u00f3ng g\u00f3i, c\u00f4ng th\u1ee9c, c\u00e1ch m\u1eafc trong m\u1ea1ch, ph\u01b0\u01a1ng ph\u00e1p \u0111o, l\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch ch\u1ecdn linh ki\u1ec7n thay th\u1ebf.<\/p>\n","protected":false},"author":1,"featured_media":2369,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-2378","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dien-tu"],"yoast_head":"\nIGBT l\u00e0 g\u00ec? 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