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关于LM3478的补偿



在Application Report ,AN -1484Designing A SEPIC Converter,page 9,有一个实际的补偿计算的例子,在(38)式的说明文字里,有一句话:Gcs is current sense gain(roughly 1/Rsn) 100A/V",在(34)式中,Rsn等于19豪欧,在(38)式的计算中,Gsc实际用了91这个数字,请问91这个数字是怎么得来的?