Best multiport USB power supply for static devices

Hi,

Most multiport USB power supplies share power between ports.

But as they usually have a max input power lower than the max total possible output, they re-negotiate power levels when a port status changes, which can cause a small power glitch.

It’s not a problem for devices with a battery like phones or tablets.

But it reboots Raspberry PIs and devices connected to powered hubs.

For now, the best I could find is the Anker 24W 2 ports (equal to 2*12W out).
But It’s quite outdated.

Does anyone have better version, like GaN?

Regards

I use something like this:
https://www.amazon.com/Charger-Premium-MacBook-Convert-Toshiba/dp/B071ZSQQ1D

They come in different configurations, but it seems always with 5 ports, so it is the divide of USB-C and USB-A ports that you can choose.

I see LVSun have new products and also a 150W PD charger.
https://www.enlvsun.com/pd-charger

Well, I don’t want some random divide.

I want static guaranty for each port, so power levels doesn’t change, otherwise some devices like rasberries reboot.

Anker 24W 2 ports equals 2*12W, so no glitches or reboots.

I’d wonder if there is a more compact adapter or with more ports with more recent technology like GaN.

Did you check the link?
There is GaN chargers on that product page and 150W divided over 5 ports means 30W per port, which should be more than enough if you do not try to charge large laptops on it too.
My 80W 5 port PD charger handle 2 small HP laptops running as servers, 2 Raspberry 4B+ and a Sonoff RF Bridge 433. It does it without a glitch and have been for around an year now.

What you don’t understand is that if a charger renegotiate power, it usually renegotiate all ports and creates a micro-power cut, which is acceptable for phones and laptops, but not for raspberries and associated switches. That’s why I’m asking for static power allocation per port.

Well, the one version I use of their product have no issues with powering my raspis even when I reboot or shutdown and later restart my laptops connected to it.

I am using this, and there is no problem you mentioned?

I found this channel on YouTube that test power adapters and also look into if the ports resets when other devices are plugged in.

@ doomay2023 How can a 1 port charger reset on negotiation? Looks like spam to me…