Tool/software:
Hello,
Our customer is verifying TPA3223 clipping waveform manner while over drive the D-amp.
Condition is PVdd=30V 4ohms load, LPF inductor has 16A current handling.
It seems this working condition is much lower than OCP and CBC3 activate threshold.
However the customer is seeing strange PWM waveform and audible noise is added as attached image.
It is no relation with load impedance or output current. what is cause of this noise sound at clipping wave condition.
Is there PWM duty limit control to avoid 100% or 0% BST cap discharge? How can we eliminate this noise sound?
Regads,
Mochizuki
