iUniker GaN PD 27W 5.1V 5A 27W PD Power Supply USB-C for Raspberry Pi 5

This probably does what it is supposed to do just fine - i.e. supply up to 5A at 5.1V into a Pi5.Under the hood it is a multi-voltage 'Power Delivery' (PD) standard supply, tweaked to supply 5.1V instead of 5V, but also capable of supplying 9, 12 and 15V to devices that can negotiate these.Be aware: the use of PD does mean that most simple adapters and cables won't allow this to power devices with mini, micro or type-A USB sockets as the supply requires correct PD signalling to output anything at all!

I got this purely to power my Raspberry Pi 5 Once I finished putting it all together for the emulation station I just wished I'd know that you needed a power supply I didn't realize it never came with one but that's just me apart from that it does exactly what it's supposed to do .

Does as described very happy

I can’t give any measurements on this power supply but it does do the job it supposed to. I don’t notice any more noise in my audio chain using this or have any degradation towards soundstage when using this with the SMSL SU1 dac.I don’t think this as overpriced as some might suggest, it’s pretty well made overall with good cable. A little extra length would be handy maybe 1.5m rather than 1.2m. A little more strength around the cable base would be welcome but it’s ok.Minor improvements to be fair but as it sells today it’s a decent choice. To better this one and see or hear a difference I think anyone would have to go Linear Power Supply or ifi Power X both of which would be around 10 x the price.

If you have a PI5 then you really need one of these , will power the 5 even with a couple of HATSand its not breaking the bank ,well built item

Picked up as I have a stable of Raspberry Pis and needed a replacement power supply for my 4 (Still waiting to be able to justify a 5).This provides a good, stable power output and I've not encountered any issues with power cycling or unexpected shutdowns.Happy to recommend

The media could not be loaded. This is one of those rare occasions where the none-original product is more expensive than the original. The reason might be the scarcity of branded Raspberry Pi 5 power supplies - I have been waiting since early October for mine.Another reason could have been the use of GaN (gallium nitride) semiconductors which are presently more expensive than silicon, but offer the advantages of smaller size and lighter weight for an equivalent power output, exceeding the performance of silicon in speed, temperature and power handling - but there are rumours the branded Pi PSU also has GaN.The Raspberry Pi 5, builds on the performance of earlier models and with each increment the demands on the power supply have increased. It was possible to supply the earlier models with an iPhone charger, but those days are long gone.The total power drawn from the four USB sockets on a Pi5 is normally limited to around 600mA, but this is automatically increased to 1.6A when a USB-C PD power supply is detected, hence the desirability of using a supply such as this. It opens up the possibility of connecting power hungry devices to your Pi without the need for additional PSUs.The electrical specification of this supply is exactly the same as the one recommended by the Raspberry Pi foundation: input 100-240V AC 50/60Hz 0.6A max, output 5.1V/5A, 9V/3A, 12V/2.25A, 15V/1.8A. It even has the same 120cm 18awg attached cable.Having an attached cable might be seen as a disadvantage by some, but it does ensure that the wire being used is up to the job of delivering the power without too much voltage drop. The performance of USB-C supplies is strongly influenced by the quality of the cable connecting them and an additional, unnecessary, pair of contacts in the current path is always best avoided. Because of its thickness the cable is stiff and the bends imparted in packing it are hard to straighten out - when it is plugged into your diminutive Pi5 it really is a case of the tail wagging the dog!This supply differs from the Pi original, being smaller and having a cable which leaves from the top, rather than the bottom. This might be a deciding factor if you have issues with the direction of wiring on your socket strips etc. One of my pictures shows the iUniker PSU side-by-side with the Pi original for comparison.As the supply is USB-C PD it is also capable of delivering the full range of voltages and currents listed above providing it receives the right signals. This makes it useful as a general purpose supply and I have added a picture of the voltages and currents supported that were detected by my USB analyser.Other results from my tests are also shown in the photographs. My dummy load is only rated to 15W so I was lucky to get 18.3566W out of this supply. The voltage was well maintained at a current of 3.52A; actually showing an increase over the no load value of 5.11V. Noise was consistent with what is expected from a switch-mode power supply.The only reason not to recommend this PSU for your Raspberry Pi 5 and all the other things it can power, is the price which is 43% higher than the branded product.

Works really well with my pi 5 and have even used it on a pi 4. Haven't noticed the dreaded power warning messages when running Raspberry Pi OS desktop on either of them.Well made, chunky plug and solid feeling cable.Much better than my previous method of power using usb cables. This actually outputs the correct amount needed for the pi 5.Definitely recommend for those in need of stable power.