A converter topology that eliminates reverse recovery losses in its output rectifying semiconductor devices employs an AC injection voltage source in series with a power transformer primary winding. The medical device includes a first coating disposed over at least a portion of the exterior surface. The one or more layers of material are arranged to be disposed near the back side of the electronic device. The first and second FPGAs are further operative to dispatch and retrieve packets to and from the first and second memory structures. Digital pulses of the FSK signals can be processed to detect digital data contained in the FSK frequencies by converting the FSK frequencies from a frequency signal to a digital logic signal and vice versa.