【应用】群芯微晶体管光耦QX816用于开关电源，输入输出隔离电压5000Vrms，发射极击穿电压大于80V

时间： 2022-04-07 来源：世强

技术问答

开关电源通常会被用做前级电路控制，利用高速开关器件，如MOS和IGBT，在导通和关断两个状态之间进行高速切换，产生PWM波对输出电压进行调试。开关电源主要由主电路，控制电路，检测电路和辅助电源几大部分组成，在其主电路中，会用到光耦来实现电气隔离，减少输出信号对后级控制部分的输入造成影响。

本文介绍一款群芯微电子的晶体管光耦 QX816，由发光二极管和光电晶体管组成的光电耦合器，拥有DIP、DIP-M、SMD三种不同的封装形式，隔离电压高达5000Vrms，发射极击穿电压大于80V。QX816在开关电源中应用如图1所示：

图1 开关电源框图

QX816在开关电源中的应用优势：

1、高耐压：输入输出隔离电压5000Vrms，满足绝大多数开关电源应用需求；

2、高电流转换比：CTR范围130%-600%(IF=5mA，VCE=5V)；

3、低功耗：总功耗仅为200mW；

4、具备DIP、DIP-M、SMD三种不同封装。

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型号- QX2223,QX0723,QX4N33,QX0601,QX1019,QX330J,QX1018,QX0721,QX0720,QXC79B,QX21X,QXC79A,QX2222,QX357,QX358,QX354,QXM343,QX350,QXM3011,QXM3012,QXM3013,QXM341,QXV25X,QX2213,QX308X,QX22X,QX58X,QX127,QXC53X,QXS258H,QX481,QXM3020,QXM3021,QX480,QXM456,QXM3022,QXM3023,QXC790,QXC87BT,QX3213,QXN6N139,QXX213,QX3H7,QX3H4,QX818,QX816,QX817,QX101X,QX814,QX0501,QX815,QXN6N137,QXN6N138,QX2122,QXN6N135,QXN6N136,QXM480,QXM481,QX333J,QXN261L,QXX223,QXN3150,QX331J,QX827,QX825,QX0611,QX826,QX332J,QXN201,QXN200,QX8801,QX075L,QXM3061,QXM3062,QX41X,QX2020,QX2021,QX53X,QX2022,QX2023,QXW723,QXM303X,QX314,QX553,QXN350,QX6N135,QX551,QX6N136,QX552,QX6N137,QX6N138,QX6N139,QXM3052,QXM3053,QXW720,QXW721,QXW601,QX074L,QXC87AT,QXY258H,QXN4506,QX1722,QXN4504,QX0511,QX0631,QX54X,QX42X,QX2011,QX0630,QX2012,QX2013,QX3223,QX562,QX563,QX561,QXM3063,QX3906,QXM304X,QX202X,QXM721,QX2601,QXN139,QXM601,QXM723,QX2041,QX2042,QX3010,QX2043,QX3011,QX3012,QX216,QX55X,QX217,QX214,QXC7723,QX215,QX212,QX337J,QXM301X,QX213,QX452,QXW60X,QXC7721,QX451,QXC7720,QXN135,QXN136,QXM3031,QXN137,QXM3032,QXM720,QXN138,QXM3033,QXW501,QX7723,QX201X,QXH87AT,QXM3051,QX4NXX,QX0534,QX3120,QX2031,QX7721,QX2032,QX2154,QX2033,QX0531,QX56X,QX7840,QX8016,QX227,QX0530,QX7720,QX33XJ,QXM302X,QX226,QX223,QX224,QX222,QX343,QX340,QX582,QX341,QX583,QXM3041,QX581,QXM3042,QXM3043,QXS259,QXS258,QXW611,QX204X,QX301X,QXM501,QXH87BT,QX3150,QX2061,QX2062,QX2063,QX3031,QX3032,QXM60X,QX3033,QX339J,QXV41X,QXC601,QX17X,QXH11L1,QXH11L2,QXH11L3,QXN825,QXN826,QXN827,QX203X,QXC70A,QXM611,QXH720,QX3140,QX2051,QX0314,QX2052,QX3020,QX2053,QX3021,QX3022,QX3023,QX522,QX523,QX520,QX521,QXY258,QXM308X,QXW511,QXY259,QXS25X,QX0341,QX303X,QXM3081,QXM3082,QXM3083,QX2083,QX3051,QX3052,QX3053,QX0223,QX0343,QX206X,QX415,QX533,QX252A,QX531,QX532,QXC501,QX3061,QXC740,QXC61L,QXM305X,6N137,QX205X,6N136,QX302X,QX2514,6N135,QX3041,QX52X,QX3042,QX3043,QX0213,QX316J,QX542,QX543,QX3H44,QXC611,QX541,QX2081,QX2082,QXY25X,QXM511,QXM306X,QXN3140,QXC4506,QXC4504,QX208X,QX1213,QX305X,QXV45X,QX3H74,QXV21X,QX155,QX33XJ系列,QX3081,QX41XS,QX3082,QX3083,QX304X,QX3062,QX3063,QXC511,QXC74L,H11L1,QXN7723,QX4504,QXN3120,QX4506,QXN7720,QXN7721,QX852,QX851,QX177,QX176,QX173,QXV252,QX174,QX6N437,QXV253,QXV254,QX172,QX25XA,QXV256,QXV258,QXH790,QXM314,QX306X,QX1223,QXC63X,QXC64L

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型号- QX1012,QX4N27-CUL-S,Q357,QX1010,QX3H7F-CUH-S,QX357F-CUH-S,QX1019,QX1018,QX4N35,QX4N27-CUL-M,QX817D-FEL-S,QX4N37,QX4N36,QX1014,QX1013-CUH-L,QX4N37-CUH-S,QX1013,QX4N38,QX357,QX827-CUH-S,QX817-CUL-M,QX4N27-CUL-D,QX4N37-CUH-M,QX817D-FEL-M,QX1019-CUH-L,QX356C-CUH-S,QX817Q-CUL-D,QX817D-FEL-D,QX817-CUL-S,QX4N37-CUH-D,QX817A-FEH-M,QX817C-CUH-D,QX816D-CUH-SY,QX356D-CUH-ST,QX817A-FEH-S,QX827-CUH-M,QX4N26,QX4N25,QX816D-CUH-ST,QX4N28,QX4N27,QX817B-FEH-D,QX851-CUL-S,QX817C-CUH-S,QX1010-CUL-L,QX817C-CUH-M,QX356D-CUH-SY,QX354A,QX354B,QX817B-FEH-S,QX851-CUL-D,QX817B-CUH-D,QX3H7,QX4N38-CUH-D,QX357A-CUH-S,QX1018-CUH-L,QX817,QX851-CUL-M,QX814,QX101X,QX817B-FEH-M,QX3H7A-CUH-S,QX4N38-CUH-M,QX356D1,QX357F,QX356D2,QX817B-CUH-S,QX4N38-CUH-S,QX814B-CUL-D,QX357A,QX357B,QX357C,QX817B-CUH-M,QX357D,QX814B-CUL-M,QX357E,QX817C-FEL-S,QX1020,QX814B-CUL-S,QX354X,QX4N28-CUL-S,QX3H4B-CUH-S,QX827,QX826,QX4N28-CUL-M,QX817A-CUL-D,QX354B-CUH-S,QX817-CUL-D,QX817C-FEL-D,QX816D-CUH-DY,QX3H7-CUH-S,QX4N28-CUL-D,QX817A-CUL-M,QX1012-CUH-L,QX816D-CUH-DT,QX356C,QX817C-FEL-M,QX817A-CUL-S,QX357X,QX817D-CUH-M,QX814A-CUL-M,QX817D-CUH-S,QX817C-FEH-D,QX814A-CUL-D,QX4N25-CUL-M,QX826-CUH-M,QX817Q-FEL-M,QX817Q-FEL-D,QX817D-CUH-D,QX826-CUH-D,QX4N26-CUL-M,QX356X,QX1017-CUH-L,QX817-FEH-M,QX817L-CUL-M,QX357B-CUH-S,QX817Q-FEL-S,QX3H7B-CUH-S,QX4N26-CUL-S,QX826-CUH-S,QX3H7E-CUH-S,QX817-FEH-S,QX817L-CUL-S,QX4N26-CUL-D,QX817-FEH-D,QX814A-CUL-S,QX817L-FEH-D,QX4N35-CUH-M,QX814B,QX4N25-CUL-D,QX814A,QX4N35-CUH-D,QX816C-CUL-S,QX816B-CUL-M,QX3H7D-CUH-S,QX1014-CUH-L,QX816B-CUL-S,QX816B-CUL-D,QX357E-CUH-S,QX4N25-CUL-S,QX817L-FEH-M,QX4N35-CUH-S,QX817L-FEH-S,QX817L-CUL-D,QX1020-CUH-L,QX816D-CUL-MY,QX816D-CUL-MT,QX817Q-CUH-M,QX4N36-CUH-S,QX817Q-CUH-S,QX4N36-CUH-D,QX3H7C-CUH-S,QX816C-CUL-M,QX4N36-CUH-M,QX357D-CUH-S,QX816C-CUL-D,4NXX,QX4N37-CUL-S,QX816B,QX816C,QX4N37-CUL-M,QX1013-CUL-L,QX4N27-CUH-S,QX817D-FEH-M,QX817-CUH-S,QX4N37-CUL-D,QX817-CUH-M,QX357C-CUH-S,QX827-CUL-M,QX4N27-CUH-M,QX817D-FEH-S,QX817D-FEH-D,QX1019-CUL-L,QX827-CUL-S,QX817Q-CUH-D,QX4N27-CUH-D,QX1010-CUH-L,QX817A-FEL-D,QX817A-FEL-M,QX827-CUL-D,QX817C-CUL-S,QX817A-FEL-S,QX817C-CUL-M,QX817C-CUL-D,QX3H4A,QX3H4B,QX1018-CUL-L,QX354A-CUH-S,QX851-CUH-M,QX817B-CUL-D,QX817B-FEL-M,QX817X,QX4N38-CUL-D,QX814B-CUH-D,QX817B-FEL-D,QX3H4A-CUH-S,QX851-CUH-S,QX817B-CUL-M,QX814B-CUH-M,QX817B-CUL-S,QX4N38-CUL-S,QX816D-CUH-MY,QX814B-CUH-S,QX817B-FEL-S,QX851-CUH-D,QX817A,QX817B,QX817-CUH-D,QX1012-CUL-L,QX817C,QX817D,QX816D-CUH-MT,QX816X,QX817A-CUH-D,QX4N28-CUH-S,QX4N28-CUH-M,QX817Q,QX817A-CUH-M,QX4N28-CUH-D,QX817C-FEH-M,QX817A-CUH-S,QX817C-FEH-S,QX817L,QX4N38-CUL-M,QX814A-CUH-S,QX817Q-FEH-D,QX3H4X,QX814A-CUH-M,QX817D-CUL-M,QX814A-CUH-D,QX817Q-FEH-S,QX827-CUH-D,QX826-CUL-D,QX817Q-FEH-M,QX817-FEL-M,QX817A-FEH-D,QX817L-CUH-S,QX816D-CUL-SY,QX826-CUL-S,QX4N26-CUH-S,QX8801B,QX8801C,QX817-FEL-S,QX8801A,QX826-CUL-M,QX816D-CUL-ST,QX1017-CUL-L,QX4N26-CUH-D,QX817-FEL-D,QX8801A-CUH-S,QX4N26-CUH-M,QX4N25-CUH-M,QX817L-FEL-D,QX4N35-CUL-D,QX4N25-CUH-D,QX816B-CUH-D,QX817L-FEL-S,QX1014-CUL-L,QX816B-CUH-M,QX817L-CUH-D,QX851,QX3H7X,QX4N35-CUL-S,QX817L-CUH-M,QX816B-CUH-S,QX4N35-CUL-M,QX8801B-CUH-S,QX4N25-CUH-S,QX817L-FEL-M,QX3H7C,QX3H7D,QX817Q-CUL-M,QX8801X,QX3H7E,QX3H7F,QX4N36-CUL-S,QX816C-CUH-D,QX4N36-CUL-M,QX816D2,QX817Q-CUL-S,QX816D1,QX3H7A,QX3H7B,QX816C-CUH-S,QX8801C-CUH-S,QX817D-CUL-S,QX817D-CUL-D,Q357-CUH-S,QX816C-CUH-M,QX816D-CUL-DY,QX1020-CUL-L,QX4N36-CUL-D,QX816D-CUL-DT

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