Chit Chat about Tick Tock (July News Upadte)

[binarian]

Definitely kicking myself that I didn't make an account sooner -- I've been following the project but forums have always scared me off. This forum seems well-managed though, so a mistake on my part.

A somewhat important question, also related to storage: what's the max power draw on PCIe devices over m.2? Some of these NVMe disks have wild maximum power draws.

Around 2.5W reserved for NVMe drive. Please don't use the power hungry type SSD which can creates heat and power consumption issue.

This needs an important clarification.  Is that 2.5W mark the absolute maximum that can be safely provided, or is that simply a "sustained idle" target?  Many SSDs will use only a few mW of power when idle, but then jump to more than 4W when doing writes.  What are the actual maximums for sustained and burst power draw here?

Thanks

I suppose the 2,5W is from the 15W the PSU delivers, so if you draw more than 2,5W from the port, I just suppose it will slowly discharge even if it is plugged to the wall, I also asked about this on page 3 of this thread.

I know you did.  That's why I posted as well; I didn't see a satisfactory direct answer, so I wanted to re-raise the issue.  There has been additional discussion on the topic here: https://forum.pine64.org/showthread.php?...2#pid48412

TLDR of that is 8.25W burst, 2.5W sustained.

From what (admittedly little) I know about electrical engineering, I don't think it would be an issue to have a total power draw over 15W due to the SSD.  The LiPO battery should be able to provide that without issue on its own, and in the event the charger is connected, the battery would only have to supply a marginal amount of current to compensate for the supply.  Yes, it would cause the battery to discharge, but only for a few seconds, since the extra power draw would only be needed in times of very heavy writes.