I designed one IO board use CYUSB3014,the VDD and AVdd need 1.2V.I use spx3819m-2 chip apply 1.2V voltage and 500mA current.But after tested,I found that it didn't work.I use TLV62130RGT chip provide 1.2V 3A ,it work.I found that Icc need 200mA and Icc USB need 60mA on the datasheet.Is it static work power?
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I have checked the power.The 1.2V net only have some cap and the chip.But they costed much power.The test current much bigger than the datasheet's work current.What may cause the big power?
I doubt the chip welding may cause some problem.I will do some test though some test board.