Hi Ti friends and other designers,
I'm using LM4950 for a audio power design and I confront an issue about the power dissipation.
In Mono BTL mode, the power dissipation can be calculated as follow formula, but I'd say it’s only suitable for calculating the maximum value:
Directly capture the power dissipation for 1W and 3W from the diagram, 1W load dissipates 3W power from the supply while 3W load dissipates 3.7W power:
As my design would be put into a sealed box, It would be very hot if i just want a 1W output to the speaker, the efficiency would be so low, 33%.
Is this the real thing that would happen?
