[zilog]

What current and power loss must the antiparallell diodes that prevent body diode saturation in a full bridge configuration handle? I am thinking about designing a subwoofer driver stage that operates from 45V and is able of driving a 2-4 ohm load, thus pulling 20A top. How to do these calculations, how do I model a typical worst case speaker (I guess one benefits from knowing inductance and resistance of the speaker) in order to calculate the amount of energy delivered to positive rail during each switch-off. Is there any possibility of handling these requirements using surface mount diodes, or is heatsink mounted TO-220s my only option?

P.S. Entschuldigen Sie bitte meine Sprachewahl, Ich habe jetzt Urlaub und deshalb benutze Ich keine Deutsch