Raspberry Pi 5 announced!

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#3151688 24-Oct-2023 10:43

Most, if not all of the USB-C laptop power supply's should work. Even the MacBook air charger looks like it will do the trick while you wait for the official power supply.

richms

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#3151692 24-Oct-2023 11:07

It will power it on and run, but you will not be able to use the newer ability to put actual USB 3 devices on it that take power without a 5A supply.

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#3151911 24-Oct-2023 21:47

richms:

It will power it on and run, but you will not be able to use the newer ability to put actual USB 3 devices on it that take power without a 5A supply.

Any USB-C power supply that is over 25W is more than capable to supply all the power the pi5 will need.

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#3151914 24-Oct-2023 22:01

Wombat1:
richms:

It will power it on and run, but you will not be able to use the newer ability to put actual USB 3 devices on it that take power without a 5A supply.

Any USB-C power supply that is over 25W is more than capable to supply all the power the pi5 will need.

Are you sure about that?

My 65W USB-C power supply will only supply 3A at 5V. Compare that with the 5A at 5V of the official Pi PSU https://www.raspberrypi.com/products/27w-power-supply/

Wombat1

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#3151923 24-Oct-2023 22:33

scottjpalmer:

Are you sure about that?

My 65W USB-C power supply will only supply 3A at 5V. Compare that with the 5A at 5V of the official Pi PSU https://www.raspberrypi.com/products/27w-power-supply/

Maybe I am converting it wrong then? P=VxI

65W @ 5 V = 13A.

But yea some power supply's may cut power when reaching a set threshold.

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#3151926 24-Oct-2023 22:39

The Samsung 45W USB C PSU I got recently delivers different amounts of power at different voltages. It can't deliver 45W at any voltage, just the higher voltages

USB C doesn't just do 5V, I learned recently.

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#3151928 24-Oct-2023 22:44

Wombat1:
scottjpalmer:

Are you sure about that?

My 65W USB-C power supply will only supply 3A at 5V. Compare that with the 5A at 5V of the official Pi PSU https://www.raspberrypi.com/products/27w-power-supply/

Maybe I am converting it wrong then? P=VxI

65W @ 5 V = 13A.

But yea some power supply's may cut power when reaching a set threshold.

Yep, they're rated for different max outputs at different voltages not stated max output at any of the voltages.

Mine does:
3A @ 5V <- 15W
3A @ 9V <- 27W
3A @ 12V <- 36W
3A @ 15V <- 45 W
3.25A @ 20V <- The stated 65W max rating

Wombat1

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#3151935 24-Oct-2023 23:33

timmmay:

USB C doesn't just do 5V, I learned recently.

Learned something new today then too. Thanks for clearing that up.

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#3151937 24-Oct-2023 23:53

Got hold of one of the rare Compute Module 4 for a special project. The Raspberry is completely submerged (hence liquid cooled) and still works normally, as if it is in the air, including WiFi. No, not a trick or a fake. 🙂

- NET: FTTH & VDSL, OPNsense, 10G backbone, GWN APs
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- 3D: two 3D printers, 3D scanner, CNC router, laser cutter

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#3174019 21-Dec-2023 12:28

I'm looking to get a couple of these for a work project. looks like I can source the Raspberry Pis but no-one has stock of the 27W power supplies. All the high wattage USB-C chargers I have seem to be 3A, but the Pi 5 wants 5.1V 5A. Can any recommend available alternatives to the official power supply?

richms

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#3174041 21-Dec-2023 13:12

Paul1977:

I'm looking to get a couple of these for a work project. looks like I can source the Raspberry Pis but no-one has stock of the 27W power supplies. All the high wattage USB-C chargers I have seem to be 3A, but the Pi 5 wants 5.1V 5A. Can any recommend available alternatives to the official power supply?

It will power up and work, but it will disable some of the boot modes and limit power to the USB ports till you change some config parameter if you are not on a 5v supply.

Mine is doing everything I need on a cheap phone charger that will do 3A at 5V - since the official AU plugged adapter seems to not even exist yet. I got some UK plug ones with my order from the UK, and no observable difference with SD card boot and just keyboard and mouse connected to the pi compared to the other charger.

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Paul1977

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#3174078 21-Dec-2023 15:08

richms:

Paul1977:

I'm looking to get a couple of these for a work project. looks like I can source the Raspberry Pis but no-one has stock of the 27W power supplies. All the high wattage USB-C chargers I have seem to be 3A, but the Pi 5 wants 5.1V 5A. Can any recommend available alternatives to the official power supply?

It will power up and work, but it will disable some of the boot modes and limit power to the USB ports till you change some config parameter if you are not on a 5v supply.

Mine is doing everything I need on a cheap phone charger that will do 3A at 5V - since the official AU plugged adapter seems to not even exist yet. I got some UK plug ones with my order from the UK, and no observable difference with SD card boot and just keyboard and mouse connected to the pi compared to the other charger.

Thanks. Stupid to use such a non-standard V & A combination, and even stupider when they don't release the power supply at the same time as the Pi!

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#3174111 21-Dec-2023 16:40

Paul1977:

Thanks. Stupid to use such a non-standard V & A combination, and even stupider when they don't release the power supply at the same time as the Pi!

Yes, but pi's have a history of stupid decisions so why stop now?

Richard rich.ms

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#3174112 21-Dec-2023 16:42

Timely email from PB tech as well...

Richard rich.ms

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#3187189 27-Jan-2024 09:44

The lack of availability for the official power supply is a PITA. I've got a NVMe hat on its way and I'm confident my Pi5 will throw a hissy fit with only Pi4 psu.

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