revisit hotswap controller

本文对比了LTC4211和TPS2471x两款器件的下拉电流能力,指出LTC4211的短路保护性能相对较弱,并探讨了其后续产品LT1641的改进情况。同时提出了关于电路断路器在短路保护中角色的问题。

LTC4211's pull down current is only 25mA compared to its p2p device TPS2471x which's pull down is 1A, the performance in terms of short circuit trip is way poorer! And its successor LT1641 only raised the pull down current to 100mA - dont understand how Linear chip roadmap maker decided that. It's apparently far lagging behind the trend...

Here is a fun question: circuit breaker is not the fastest means of conducting a short circuit. Then what is it? 大笑

TPS2471X:


LT1641:



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