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PN5180 power consumption problem

Question asked by 显卓 鲁 on Oct 15, 2019
Latest reply on Oct 16, 2019 by 显卓 鲁

Hello everyone:

I have a problem about PN5180.I hope you can help me,thank you

My question is below:

When the current consumption is 160mA, I use an oscilloscope to observe the antenna terminal voltage is only 32.48V,

Why is the power consumption so high and the antenna terminal voltage so low

Another question,Put the card on the coil and the power consumption reaches 244mA

The power consumption Shouldn't be lower when the card is on the coil?

Best Wishes