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TPS4811-Q1: Tps48111-q1

Part Number: TPS4811-Q1

Hello Rakesh,

We are using TPS 48111 in our BMS design.

We found that the precharge MOSFET gate drive  got failed. We don't know the exact you see some possible reasons for this fail.

We were  charging  the battry before discharging.w

We followed the  sequence of switching ON  the precharge and main  mosfets.

We have already varified the schematic and the layout with you.

Now one more question.

We don't see the actual current  waveform during short circuit protection.

How to get this waveform slower so that clear waveform on DSO will be seen. 

Our system requirements are:-

Continuous current=75A

Peak current=150A for 10Sec

Short circuit current =265A. For 15 micro Sec

Could you please send the exact calculated values.

Note: short circuit current waveforms need to be seen on DSO.

Thanks and regards

Subhash Dhyani