When sending data,comes a big current peak before the data sending

Wireless Connectivity Ultra-Wideband
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The image is the current when sending data ,the first current peak is about 200mA ,the second peak is about 60 mA.
Is this ok?

2

The whole process lasts about 6ms.
The tag is in deepsleep before sending data.

3

Hi Pupil,

Can you elaborate Which hardware and software are you using ?

Thanks
Yves

4

We are using the schematic same with dw1001,but changed the power ICs with which we can bought from china.The dw1000 driver api is “DW1000 Device Driver Version 04.00.06”
Thanks

5

It’s the DC-DC chip charge the cap after enable it.
When reduce the cap value after the dc-dc chip,the current can reduce lower

6

Hi Pupil,

Thanks for coming back with the explanation.

Out of curiosity which DCDC part are you using on your design ?

Thanks
Yves