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LM5010SD试产100PCS不良18PCS

Other Parts Discussed in Thread: LM5010

以上为我司试产100PCS的原理图,目前发现18PCS无输出,经分析发现2脚BST与9脚VCC击穿,2脚与9脚之间的电压波形如下图如示:

峰值67.7V  幅值57.6V  有效值31.5V