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tps62130输出不正常

Other Parts Discussed in Thread: TPS62130

tps62130输入正常,但是输出不是我需要的1.2V,而是2.2V。电路图是按照datasheet上搭的,空载的时候做的测试,还是不对,那位大神能给解释下,非常感谢!

电路图已添加到附件,电路图中u6是62132,输出正常3.3V,但是u5是tps62130,输出大约为2.2v,改变R35的大小,R35=10M,能调整到输出为1.6V,是芯片的问题么?