Hi Team,
My customer is using TPS2359 widely in their system. The llimit is 8A and fault timer is 5.4mS for period when Vgs lower than 6V.
My customer's question is: if i exert a 10A 5ms and 0A 5ms square wave load on output, the TPS2359 would not protect MOS anymore. Because when 10A is making Vgs drops for 5ms, it drops to 0A before timer terminates. Then timer releases to 0ms. The upcoming 5ms 0A is not enough for mos to dissipate heat. Therefore, the mos will accumulate heat until it is damaged. See below for how the waveform looks like.
Could you please tell me if there is a status bit in register that indicates TPS2359 has started current limit?
From hardware point of view, do you know if it is possible to do some workaround to protect MOS from over-heat?
Thank you!
-Wenhao
