I found it early this year, noted to someone promoting 700khz. The evaluation board is too expensive for me but I am looking forward for an affordable controller necessary only to initialize at start up. Maybe, a fixed options pre adjusted version can come out .
To choose the gain and frequency, the controller is needed only to initialize at start up. The document doesn't say what happens if used without. This is new technology, I am sure it will be implemented in near future on standard types.