TPS25925: What protection occurs in TPS25925?

Hello! Jimmy,

Can you please tell us more about the test setup which resulted in this issue and share waveform including both Vin, Vout and I_in. If you are using enable start, then include that also. 

Is there any resistive load connected down the line for efuse or just the capacitors shown in the schematic are the load.

Best Regards,

Arush

Hi Arush,

When the customer bypasses the device. the system working as well. 

I suggest customer remove R5 and R4 change to 1M. but no effect on anything. 

If you are using Enable Start, then include that also. Can you tell me what does means? 

5V can not use div resistance? only 12V device?

Hi Jimmy,

Removing resistive divider won't make difference. The enable pin uses a comparator with around 1.2V reference voltage. Here with the resistive divider also, we are getting 1.6V voltage at the enable pin. Can you share waveforms. Without them, it won't be possible to find the possible cause for this.

From Enable start, I meant Vin is high and En able is controlled externally but I don't think they are doing that here so just send me Vin, Vout and input current waveforms in same oscilloscope capture. Please ensure that the signal curve don't intersect. 

Also, it will be helpful if customer can help with this information.

Arush Gupta said:

Is there any resistive load connected down the line for efuse or just the capacitors shown in the schematic are the load.

Best Regards,

Arush