Class D Stereo Amp in Mono?

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chermann

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Joined 2017
forestsgump said:
Mates, doctormord, FauxFrench, Saturnus ...

What if the Class-D is a TPA3250 (ie. FX502S-pro), can apply Parallel the amp.
(Split the signal and use it as input on both channels and then parallel the output, plus to plus, minus to minus.)?
Click to expand...

nop! the pcb layout is set to BTL - so for PBTL you have to change the coils and caps. at the TI datasheets you can see the schematic diagram for BTL and PBTL

chris
 
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FauxFrench

Member
Joined 2017
forestsgump said:
Mates, doctormord, FauxFrench, Saturnus ...

What if the Class-D is a TPA3250 (ie. FX502S-pro), can apply Parallel the amp.
(Split the signal and use it as input on both channels and then parallel the output, plus to plus, minus to minus.)?
Click to expand...


As Chris rightfully says, in practice you will have to convert it to PBTL which requires changes on the board itself.
Connecting two amplifier channels in parallel requires amplitude and phase of the two channels to be fully alike. Else, you will have cross currents.
 
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