Not sure if this is the right section to ask this, but I can't find a section specifically for wireless power transfer.
I am using the STEVAL-ISB045V1 and STEVAL-ISB68WAM QI wireless power eval boards. Looking at the general capabilities of QI, it can have a range of up to 40 mm, but these two boards together only really work properly when they are completely pushed together. Even a millimetre gap stops it working properly.
Is there a way of increasing the range? I need very little power transfer (in the order of 100 mA at 4 V) compared to the nominal 2.5 W the board is rated for, so a decrease in efficiency would be fine.
