Miniware Compact, Precision PowerSupply II MDP-XP Review

One very impressively small PSU that packs quite a punch!

Affiliate links:

0:00 Intro
0:52 Features
2:44 Ad
3:30 Unboxing
4:30 Setup
6:00 Oscilloscope time!
9:08 Comparison with Riden PSU
11:13 Revealing Miniwares Secrets
15:14 Conclusion

-Schematix-

[SeanHodgins]

Wow cool, this would be a great rack mount power supply system.

[hinokikuaimu]

@Schematix: Hybrid (Switching/Linear) bench PSUs exist for quite some time, they are also known as "mixed mode" PSUs. British (GB) made EX-R Series from AimTTi are just this. Some forum posts can also be found (ex from TI, ...).

[peteb]

Good to see you again fellow Kiwi & thanks for reducing my boredom in a L4 Lockdown...

[ianhouston]

Quite an impressive little unit. Could you share more info regarding the resistive load tester you used in the video?

[BikerCaf]

Nice regulator, pricey though !
Linear regulators have been used to clean the outputs of switch mode regulators for years, they do SMD chips with both built-in for just this purpose too as well DIY. Not all linear regulators are suitable for the purpose though, it has to respond very quickly to smooth out spikey HF switch mode noise.

[tanishqbhaiji]

Switching PSUs don’t necessarily have high output ripple but they are slower in transient response compared to linear ones and most PSUs reach low to mid 80% efficiency figures when drawing a significant portion of the rated power, the poly-phase switching regulator such as the ones used to provide power on modern X86 processors like on the various X570 and Z590 motherboards are quite impressive in every regard.

[fvckyoutubescensorshipandt]

Handy if you don't need a huge amount of power I guess (I tend to need as much as I can get, typical power souce is a 120v 32s lipo battery that can do 120A continuous/300A for a few seconds into a converter that puts out 12-150V and 10-150A current limit). For smaller things I just use 2x 0-30v 10A supplies in series or a 0-500V 30A one I built that runs on 240V 60A mains.

[flexairz]

Great review, awesome product.
Just bought one too!

[tanishqbhaiji]

The switching part must be in the multiple 100s of KHz range as the electrolytic bulk caps look not that high performance and it must be the high Capacitance MLCCs for the regulation. I love those tiny MLCCs, they are quite performant specially considering the price and form factor. Would have loved to see some Moulded Aluminium polymers but this is very good.

[tanishqbhaiji]

Amazing feat by Miniware and E-Design.

[sckirschstein]

Thanks for the interesting review.

I'm wondering if I can stack two PS modules to be centrally commanded by the screen controller, as a differential power supply (common negative) and/or a series arrangement, both for versatile electronic breadboard projects and teaching.

[tanishqbhaiji]

Does this use a ultra low drop out linear regulator with a tracking switching unit? I have wondered about this design for sometime and I got the answer after watching the whole video, thank you.

[CaptainChrisMoore]

Great. Another gadget I must buy. Ya know my wife is going to slap me and you for this when she finds out hahaha.

[KernsJW]

The supply without screen is 144, thats not too bad, but unless you need the small size you can find cheaper options. I do like the form factor though

[givenfirstnamefamilyfirstn]

Nice apart from the price. Will your own power supply kit be back in stock again?

[andymouse]

Great review and great product, I'm am seriously thinking of getting this and if I do I will use your link

[MiniLuv-]

Yes, that is clever. The linear side only ever drops 0.5V so at max o/p of of 5A, there is a mere 2.5W loss as heat. Thats around 2% contribution to the overall loss of the system.
The obvious question is can you design something using this principle to add to any switching regulator? Since the voltage drop will always be 0.5V this shouldn't be too hard?

[TheBadFred]

What I don't understand why use an antiquated standard like QC3.0 instead of PD3.0 That can deliver 100W? I probably should wait for a revision with a PD chip inside. BTW I like the video, bro.

[HMProjects]

Great video as always. The tipe of power supply that shares both worlds switching and linear is not something new, I have a Peaktech 6225 that shares both worlds. Another thing, high capacitance on the output is not always a good thing, if this power supply has a slow feedback loop it can ruin your day.

[pajopaable]

Hi,
Where I can buy compatible adapters for Technics SL-PD9/SL-PD7A & Technics SJ-HDA710?
Please advise.
Thanj you.