LM5022用于Boost电路时,采用不同阻值的电流采样电阻,系统都能够稳定运行,那不同阻值的电阻对系统的主要影响体现在哪呢?
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Hi
Rsns是电流保护电路,如果放大了,更加容易过载保护,需要选择适当的电阻。例如你最大负载是3A, 过载可以设置到3.5A, 按照上面计算Rsns. 如果你实际选择的Rsns电阻比这个计算值大时,那么最大输出不到3.5A, 芯片就发生过载保护。