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BQ500211无法正常工作问题请教

Other Parts Discussed in Thread: BQ500211

       我是按照bq500211的datasheet上面第18页的图画的PCB,然后板子做回来,焊上元件后芯片不工作。

由于实际中tps62237太难焊了,我直接将他的输出3.3V用直流电源代替,感觉这个应该不影响什么,附上我自己的原理图,希望工程师们帮我看一下