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求BUCK电感圈数的计算

XIANYUN ZHAO
Prodigy 40 points
Other Parts Discussed in Thread: LM3409HV

求BUCK电感圈数的计算方法，我用EE19磁芯做50W DCtoDC转换器，电感量500uH,由于是调光的所以需要将电感量做大些，开关频率300kHz，输入电压55V±3V，最大输出电流1.5A，输出电压范围10-50V，IC：LM3409HV，现在电感量知道，却不知道到底绕多少圈数，求大神们赐教