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求解惑:LM2575HV-ADJ 输出电感选型问题

Other Parts Discussed in Thread: LM2575, LM2575HV

最近用LM2575HV-ADJ做继电器电源,因为输出电压不匹配导致电压降很大,现重新设计输出电压。

疑问:LM2575HV 参考手册(LM1575/LM2575/LM2575HV SIMPLE SWITCHER 1A Step-Down Voltage Regulator。SNVS106E –MAY 1999–REVISED APRIL 2013)第15页中EXAMPLE (Adjustable Output Voltage Versions)的第三步“输出电容”计算部分 150uH是如何得出的,第二步中的设计电感为470uH?

有技术工程师解释一下么,先谢谢了。