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TPS65100有几个压无法稳定

Other Parts Discussed in Thread: TPS65100

我用TPS65100搭了个电路,驱动一个天马的8寸屏(和群创是一样的),电路按数据手册的推荐。

输出电压分别是:12.5V,22V,-7V,4V,3.3V

现在的问题是空载时,电压都正常;

接上屏后,只有12.5V和3.3V电压是正常的,其它几个电压都低到几乎没了。22V只有2.3V左右,另两个在0V附近。

这是怎么回事呢?