Hi,
I have several question about TPA3139D2 Class D Amplifier.
1) In datasheet chapter 6.1 absolute Maximum Ratings. Minimum load Resistor is 4.8 ohm @ BTL, (10V < PVCC <14.4V) condition.
But 4 ohm speaker application is record in this datasheet figure 6-5 output power vs supply voltage
Can I use 4 ohm speaker in AVCC=PVCC=12V condition?
2) I need more detail ferrite bead selection guide to design my board to comply FCC class B EMI regulation.
In datasheet page 25, It only recommend to use Murata NFZ2MSM series ferrite bead.
But I don't know the requirement to select proper ferrite bead.
Regards,
Harry Wang
2023/09/01
