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lm22676在WEBENCH仿真时FB阻值不对

Other Parts Discussed in Thread: LM22676, LM2841

该图中设计阻值FBB竟然比FBT要大,结果明显不对啊!

然后我想是不是进入的网页不太对的,分别以主页直接搜lm22676和通过主页-->设计工具两个路劲来进入电路设计,结果更加奇怪了:

1、主页直接搜lm22676,其输出的范围5-37V

2、通过主页-->设计工具,该处输出条件选的是12V,然后就没办法搜索到LM22676了

然后将输入改为3.3V就可以查找到LM22676了,但是进去之后,输出电压的范围只有1.285-5V了

还请帮忙分析分析的,我已迷茫