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wireless power design considerations
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rookie:
Hey y'all

I'm currently evaluating the addition of wireless charging to a low power project I'm working on. Upon surveying available chips in the market, it looks like a lot of the big players have removed their low power Qi offerings (<5W), like ST, IDT or completely exited the market(TI). Most manufacturers now focus on 5W and above. Anyways, I'm interested in building a device that's <2W, but I don't have the bandwidth to make the TX and RX side of the system.

To simplify things, I am trying to focus on the receiver on my project and leave the TX to a retail product. The other option is obviously to do both. Has anyone gone either route, or considered wireless charging on their projects at all? Apart from heat, an important consideration is quiescent power consumed by these chips when on battery which range from 20-40uA which is kind of high for low power projects. This seems to be the range of current consumption regardless of whether a Qi protocol is followed or not (LTC4124, bq51003, BD57011AGWL).

So - has anyone included wireless power on their projects and what trade-offs(power/heat/scope of design) did you consider when deciding to use wireless power?
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