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Published 20 hours ago • verified publisher icon antmicro

Buffer for driving PWR_EN

Open yamiyukiharu opened this issue 4 years ago • 1 comments

Hi, May I know if anyone has tried driving PWR_EN from IC12 instead of IC13?

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yamiyukiharu avatar Mar 15 '21 10:03 yamiyukiharu

My understanding of this circuit is that the R84/C41 time constant, and subsequent rise time of the 1A input, is slow enough to make Q = 1 on 5V0_SYS approaching 5V. At this point PWR_EN is latched until #SHUTDOWN_REQ is driven low by the TX2 NX module. Is this correct? What is the purpose of PWR_GOOD? What would be the benefit of driving PWR_EN from IC12 /R130? Response time?

Cheers!

wild929 avatar Dec 06 '21 05:12 wild929