ATV71HD37N4Z驱动板
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面议
ATV71HD37N4Z驱动板
igbt驱动板布线: 1、为降低导线电流形成的磁场造成的干扰,在给S1、S2信号层布线时,一层布线为横线,另外一层布竖线,如图5所示。另外,应选择长度尽可能短的走线方式,以减少阻抗; 2、每一层的走线均匀,走线宽度无突变。为了保持走线阻抗的均匀,不能有90°拐角,而用圆弧或135°拐角; 3、区分信号线、电源线,依据各自流过的电流大小来设置线宽。信号线上电流一般小于10mA,一般设置为8-12mil线宽即可;电源线电流较大,设置线宽时按照1mm/A的原则(铜箔厚度为35um)设置线宽, 另外,根据不同电压,电源层要采取区域分割方式,高压部分间距加大,或加隔离槽。
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