2. H-bridge topology which I am working on operates from +6V Pb-Acid battery supply.
3. ADuM3223 will be used for driving gates of FETs in H-bridge. Datasheet states output drive is (4.5-18V). I need to size the circuit accordingly for which it is required to know output voltage of gate drive signal. How to determine that?
The output voltage (and current) of the gate driver should be chosen based on the requirements of the FETs being driven. Switching frequency should also be known to determine required output current.