Other Parts Discussed in Thread: BQ500212A, BQ50002
Hello TI support. I have a BQ51003 receiver, which failed on WPC´s Difference:
Transmitted - Received power = 1.6 - 1.3 =0.35 W. Limit = 0.3 W.
Using default resistors Ros = 20K, Rfod=196, Rlim = 330 Ohm. Current load is 0.3A through charge IC to the LiION cell.
RX coil is 27*31mm, 2.5 Watt. 0.5 Ohm. 12 uH, with aluminium plate 3.5 mm away from coil.
So I need to calibrate Rfod and Ros, which demands Ref. transmitter++, as stipulated in SLUA731.
Is there any rule of thumb for changing Ros and Rfod percentages versus increasing Received power info to transmitter by 15 or 20 %?
Or to put it in an other way: Is there any tranfer factors between these values and the Received power value to transmitter?