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LM3150 FB脚吃电流问题

Other Parts Discussed in Thread: LM3150

在使用LM3150时发现一个问题。我要做一个13V~17V输入12V/6A输出的DC-DC电源,在调试中发现LM3150的FB脚吃电流使得FB脚的电压始终无法达到0.6V的稳压标准,导致电源输出会随着输入电压而改变,当我更改电阻使输出降低到7V时FB脚的电压才稳定在0.6V,输出才不随输入而改变。

已经试了各种电阻的组合,都无法让输出在12V的情况下使FB脚电压达到0.6V