Part Number: TPA3116D2
I'm designing an amp for a portable speaker. 2 Ch X 2 Ohm load. Wattage handling of the driver is TBD, but expected up to 100W/ch, but 40=60W/ch may be the final for this application.
Options I'm considering
TPA3116D2 qty 2 in PBTL
TPA3128D2 qty 2 in PBTL
TPA3244 qty 1 in PBTL
Is there others that should be considered?
Why does the TPA3116D2 have a higher wattage rating over TPA3128D2 when the 3128 has lower RDSon?
If using TPA3116D2 "filter-free", are here concerns running at higher power?
Rdson determines the efficiency of class-D audio amplifier, so you can see that the output power efficiency is higher on TPA3128D2 than TPA3116D2 under the same condition. While the maximum output power depends more on the thermal dissipation performance. As Jeff said, TPA3116 is a thermal pad up package, so it supports higher output power with a heatsink.
For high output power application, there isn't any problem with ferrite beads in LC filter. But please make sure your ferrite beads support the maximum output current on them.
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