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              SUBJECT
              TIME
                 Our Industrial Design
                2011-05-19
                   It Is A Power Supply
                  2009-08-06
                <span title="开关电源在设计的时候电容的问题是需要重视的,而在开关电源的电容设计中。">Switching power supply capacitor when the design problem is the need to pay attention, and in the switching power supply capacitor design. </span><span title="X系列电容和Y系列电容的设计">Y series X series capacitor and capacitor design<br /> <br /> </span><span title="很重要。">Is very important. </span><span title="对于这两种电容的各个系列的设计准则, 在这里给大家说明一下。">For each of these two series capacitors design criteria, to explain to everyone here.<br /> <br /> </span><span title="开关电源的X电容设计准则:">X capacitor switching power supply design guidelines:<br /> <br /> </span><span title="参考AD1118 X电容放置原则:">Reference AD1118 X capacitor placement guidelines:<br /> <br /> </span><span title="1.共模扼流圈前:105/275VAC(MKP/X2) 2.共模扼流圈后:474/275VAC(MKP/X2) 参考MW SP">1 Common Mode Chokes ago: 105/275VAC (MKP/X2) 2. Common mode choke after: 474/275VAC (MKP/X2) Reference MW SP<br /> <br /> </span><span title="200-12 X电容放置原则: 1.共模扼流圈前:1uF/275VAC(MKP/X2) 2.共模扼流圈后:0.33uF/275VA">200-12 X capacitor placement guidelines: 1. Common mode choke coil former: 1uF/275VAC (MKP/X2) 2. Common mode choke after: 0.33uF/275VA<br /> <br /> </span><span title="C(MKP/X2)">C (MKP/X2)<br /> <br /> </span><span title="参考MW S145-12 X电容放置原则:">Reference MW S145-12 X capacitor placement guidelines:<br /> <br /> </span><span title="1.共模扼流圈前:0.22uF/MKP-X2-250VAC/275VAC(GS-L)">1 Common Mode Chokes ago: 0.22uF/MKP-X2-250VAC/275VAC (GS-L)<br /> <br /> </span><span title="2.共模扼流圈后:0.1uF/MKP-X2-250VAC/275VAC(GS-L)">(2) Common Mode Choke after: 0.1uF/MKP-X2-250VAC/275VAC (GS-L)<br /> <br /> </span><span title="一般两级X电容,前一级用0.47uF,第二级用0.1uF;单级则用0.47uF.目前还没有比较方便的计算方法。">Usually two X capacitors, before a use 0.47uF, the second stage with a 0.1uF; single stage is used 0.47uF. Currently no convenient method of calculating. </span><span title="(电">(Electric<br /> <br /> </span><span title="容容量的大小和电源的功率无直接关系)">The size and volume capacity of the power supply has no direct relationship)<br /> <br /> </span><span title="开关电源的Y电容设计准则:">Y capacitor switching power supply design guidelines:<br /> <br /> </span><span title="大地=PGND(or CHGND) 参考AD1118 Y电容放置原则:">Earth = PGND (or CHGND) Reference AD1118 Y capacitor placement guidelines:<br /> <br /> </span><span title="1.市电输入L/N线对大地:(2颗472/250V Y2)">1 mains input L / N line to the earth: (2 472/250V Y2)<br /> <br /> </span><span title="2.市电经过一级共模扼流圈后的两线对大地:(2颗472/250V)">(2) electricity through a common mode choke the earth after two lines: (2 472/250V)<br /> <br /> </span><span title="3.整流桥输出的低压端(变压器初级低压端)对大地:(1颗222/250V)">3 low-side output rectifier bridge (primary of the transformer low voltage side) to the earth: (a 222/250V)<br /> <br /> </span><span title="4.6组低压直流输出88V1对大地:(各1颗103/1KV Y1)">4.6 group of low-voltage DC output 88V1 on earth: (each a 103/1KV Y1)<br /> <br /> </span><span title="5.6组低压输出辅助电源AGND(变压器次级低压端)对大地:(共用1颗103/1KV Y1)">5.6 sets of low output auxiliary power AGND (low voltage transformer secondary side) of the earth: (sharing a 103/1KV Y1)<br /> <br /> </span><span title="6.变压器初级低压端对变压器次级低压端:(共用1颗103/1kV Y1)">6 primary of the transformer low voltage side of the transformer secondary low-voltage side: (sharing a 103/1kV Y1)<br /> <br /> </span><span title="参考AD1043的设计:">Reference AD1043 design:<br /> <br /> </span><span title="1.市电输入L/N线对大地:(2颗222/250V Y2)">1 mains input L / N line to the earth: (2 222/250V Y2)<br /> <br /> </span><span title="2.市电经过1级共模扼流圈后的两线对大地:(2颗472/250V Y2)">(2) electricity through a common mode choke the earth after two lines: (2 472/250V Y2)<br /> <br /> </span><span title="参考康殊电子的设计:">Kang special reference to electronic design:<br /> <br /> </span><span title="1.市电输入L/N线对大地:(2颗102/250V Y2)">1 mains input L / N line to the earth: (2 102/250V Y2)<br /> <br /> </span><span title="2.市电经过2级共模扼流圈后的两线对大地:(2颗102/250V Y2)">(2) electricity through two common mode choke the earth after two lines: (2 102/250V Y2)<br /> <br /> </span><span title="3.整流桥输出的低压端(变压器初级低压端)对大地:(1颗332/250V Y2)">3 low-side output rectifier bridge (primary of the transformer low voltage side) to the earth: (a 332/250V Y2)<br /> <br /> </span><span title="4.12V低压直流输出对大地:(1颗223/1KV DISC Y1)">4.12V low voltage DC output to the earth: (1 223/1KV DISC Y1)<br /> <br /> </span><span title="5.变压器初级低压端对变压器次级低压端:(222/250V Y1)">5 primary of the transformer low voltage side of the transformer secondary low-voltage side: (222/250V Y1)<br /> <br /> </span><span title="参考MW S-145-12的设计:">Reference MW S-145-12 Design:<br /> <br /> </span><span title="1.市电经过1级共模扼流圈后的两线对大地:(2颗222/2kV Y1)">1 electricity through a common mode choke the earth after two lines: (2 222/2kV Y1)<br /> <br /> </span><span title="2.整流桥输出的低压端(变压器初级低压端)对大地:(1颗222/2kV Y1)">(2) low-voltage rectifier bridge output terminal (primary of the transformer low voltage side) to the earth: (1 222/2kV Y1)<br /> <br /> </span><span title="3.12V低压直流输出GND对大地:(1颗103/1KV Y1)">3.12V low voltage DC output GND on earth: (1 103/1KV Y1)<br /> <br /> </span><span title="参考MW S-200-12的设计:">Reference MW S-200-12 Design:<br /> <br /> </span><span title="1.市电输入L/N线对大地:(2颗472/250V Y2未上)">1 mains input L / N line to the earth: (two 472/250V Y2 is not on)<br /> <br /> </span><span title="2.市电经过1级共模扼流圈后的两线对大地:(2颗472/250V Y2)">(2) electricity through a common mode choke the earth after two lines: (2 472/250V Y2)<br /> <br /> </span><span title="3.整流桥输出的低压端(变压器初级低压端)对大地:(1颗222/250V Y2)">3 low-side output rectifier bridge (primary of the transformer low voltage side) to the earth: (a 222/250V Y2)<br /> <br /> </span><span title="4.PFC输出高压端对变压器初级地:(1颗103/2kV Y1)">4.PFC output high side of the transformer primary ground: (1 103/2kV Y1)<br /> <br /> </span><span title="5.12V低压直流输出对大地:(1颗103/1KV Y1) 6.12V低压直流输出GND对大地:(1颗203/1KV Y1)">5.12V low voltage DC output to the earth: (1 103/1KV Y1) 6.12V low voltage DC output GND on earth: (1 203/1KV Y1)<br /> <br /> </span><span title="根据上述说明,Y电容设计规则如下:(可适当选择)">According to the above description, Y capacitor design rules are as follows: (can be appropriately selected)<br /> <br /> </span><span title="1.市电输入L/N线对大地:(2颗222/250V Y2)">1 mains input L / N line to the earth: (2 222/250V Y2)<br /> <br /> </span><span title="2.市电经过一级共模扼流圈后的两线对大地:(2颗222/250V Y2)">(2) electricity through a common mode choke the earth after two lines: (2 222/250V Y2)<br /> <br /> </span><span title="3.整流桥输出的低压端(变压器初级低压端)对大地:(1颗222/250V Y2)">3 low-side output rectifier bridge (primary of the transformer low voltage side) to the earth: (a 222/250V Y2)<br /> <br /> </span><span title="4.变压器初级低压端对变压器次级低压端:(共用1颗103/1kV Y1)">4 primary of the transformer low voltage side of the transformer secondary low-voltage side: (Shared a 103/1kV Y1)<br /> <br /> </span><span title="4.低压侧直流输出对大地:(1颗103/1KV) 6.低压输出侧GND对大地:(1颗103/1KV)">4 DC output on the low pressure side of the earth: (1 103/1KV) 6. Voltage output side GND to the earth: (1 103/1KV)</span>