This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPA3251: TPA3251 issue

Part Number: TPA3251


We use the TPA3251D2 for the audio power design, we choose 2N + 1 input mode, the and now we have the design issue as below testing result:

The schematic diagram as below:

The testing result as below:

1. We test the /Reset and /Fault waveform when power on, the /Reset is low:

2. We test the /Reset and VDD waveform when power on:

3. We test the /Reset and /Fault, and manual reset:

4. We test the ouput, and the power is normal when we manual reset, and then, there are no ouput current after about 5second;

We consider our design is error and the Reset is remain on low voltage, we have no idea to solve this problem, please kindly review and supply your comment, thanks.