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TPA3255: low power fault

Part Number: TPA3255

Hello,

we have a problem with our TPA3255 design.

The amp shuts down at approx 50 W power. As reference i use the TPA3255EVM wich has no problems at same conditions.

Conditions:  4 * 4 R (ohmic) BTL 

                    PVDD: 48 V

                    Roc: 22k

Maybe you can take a look at our design.