I am looking to created a slip ring like device using the BQ series parts but with smaller diameter inductors. I understand that changing the Tx inductor will violate the compatibility spec, but these will be a matched pair, so that doesn't bother me. I need the center to be open-air because an air tube passes through them (part of the application). That would mean, no solid ground plate either. Our current constraints look like an OD of 20mm for the inductors and an ID of 10mm. The thickness can be multiple windings thick.
I guess my general question is, can the BQxxx chipset be used with non standard geometries? I'm hoping that by leveraging these parts, I don't need to create a custom inductive power transfer circuit.
Alternate chips/solutions are welcome as well. I'm just starting my search.
Thanks, William