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TPS40170测量VFB电压略小宇规格书中提到的0.6V的最小值，导致输出电压不准。
Hi
FB基准在591mV~609mV范围内都正常。如果说输出不稳定，你需要确认是否是输出纹波是否异常偏大？ 如果是的话确认一下环路补偿和layout.
如果确认没有问题，确认一下电感饱和电流，或者减小负载看输出能否恢复到正常输出范围内？
