30V输入,5V输出,为什么加负载时,最大只能输出1A的电流,再加电流时,电压会被拉低到4V以下
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Hi
建议你确认一下layout, 可以参照datasheet, 注意功率回路尽量小,同时避免寄生参数引起的不稳定,否则容易引起带载能力降低。(特别注意sense电阻,避免 noise)
其次确认功率电感饱和电流足够,建议至少大于最大输出电流的1.2倍。.