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Digital Power Amplifier
Consideration about the PCB design
The Power dispassion at 10Wx2ch(SE) or 20Wx1ch(BTL) is estimated
almost 2W. It has enough margin, designing the PCB at θja=30℃/W.
(1)PCB basic design (copper plane)
<the best design : 4 layer PCB>
PCB
<PCB size estimation >
<the economy design : 2 layer PCB>
PCB
The GND&Power line total area size is also equal to the above GND&Power
line total area size of the 4layer PCB.
<PCB size estimation >
(2)PCB Thermal Pad
The exposed die pad is directly soldered with the printed-circuit board pattern .
Thermal Pad
R2S15102NP
thermal via
10Wx2ch: 75mm x 75mm
Thermal Via
10Wx2ch: (75+α)mm x (75+α) mm
67／127
GND plane
Power plane
Rich GND&Power line Area
Additional
Thermal Via
PCB
Thermal Via
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