Dear TI experts,
My customer considers TPA3116D2 for their new project, and they have a question about BD/1SPW modulation.
BD modulation is described as follows in the datasheet;
- This is a modulation scheme that allows operation without the classic LC reconstruction filter when the amp is driving an inductive load with short speaker wires.
1SPW modulation is described as follows in the datasheet;
- The 1SPW mode alters the normal modulation scheme in order to achieve higher efficiency with a slight penalty in THD degradation and more attention required in the output filter selection.
And here are the questions;
1. Typical applications(fig 37, page 26) in the datasheet says that MODESEL pin is connected to GND. It means that BD modulation is applied, but classic LC filters are also designed in Typical applications.
Could you explain why?
2. Could you provide reference schematics for BD modulation and 1SPW modulation? (I can refer the LC filter schematic.)
3. what is the difference between BD modulation and 1SPW modulation in the developer's view and customer's view? (efficiency, performance, power consumption, etc?)
Best regards,
Chase