TAS6424-Q1: TAS6424 DC fault detected

hello,

   could you explain your setup and output details? what is meaning of slightly higher?

0x0f means DC fault detected.

regards

Linda

hello

What I mean is that as long as the chip of single channel output power at the time of small is no problem, but as long as power as long as in more than 15 w is particularly prone to this error.If four channels work together in a smaller power will be an error.Is currently the DSP output signal, there is no dc offset.

THANKS

hello：

At present, the oscilloscope appears to have no dc offset, but it appears dc fault detect in less than 1 minute of operation。Please take a look for me。

Thanks！

Hello,

Please read registers 0x00~0x30, we can find the detailed status of AMP. I am thinking there is not only this DC fault reported.

Dylan

hi，

I'm sorry that I didn't reply in time due to my business trip two days ago.The problem has not been solved yet.Even when the power is high, it will work for a while and then stop working.At this point we have 0x10,0x12,0x13 response errors,dc fault and overtemperature。But now I've done the cooling.Do you have any good Suggestions for me?I think temperature should be the main reason, but why the dc fault is not clear to me.From the oscilloscope output waveform, there should be no dc fault.

When it's not working the hand temperature is obviously the threshold, 

Hi,

I believe the reason is over temperature shutdown problem. how about your thermal design? what is the thermal material's thermal resistance? and how is the thickness?

Dylan

Just like the black aluminum radiator at the bottom of the picture, I'll buckle it to 6424

The heatsink is very good. But please note the thermal material between device and heatsink, if the thermal resistance too large, or thickness to large, that will be the bottle neck.

Thank you !