The Inergie 60C must be one as well, it's too small to be anything else. Also, the finsix dart is GaN but it's not USB C.

I am an idiot, the dart is not GaN, it's SiC. https://www.pntpower.com/5-reasons-why-avogy-and-finsix-put-...

Thanks for following up (a week later—that never happens on HN). Since you're an enthusiast, it's worth mentioning that the atom pd1 is now shipping. Just a heads-up if you were interested in grabbing one.

Thanks for the additions.

Didn't think of the Dart since it's been around for a while. That has to be one of (the?) first GaN chargers to market?

I am an idiot, the Dart is not GaN. https://www.pntpower.com/5-reasons-why-avogy-and-finsix-put-...

That and the now defunct Zolt were the first ones, yes.

Thanks, That is absolutely brilliant! I wonder why these product don't get much media coverage at all.

Turns out Discovery and Distribution aren't really a solved problem at all in the world of Internet.

I just wish some of these had two port though. I am starting to wonder if there will be hotels adopting USB-C as Charging standards and provides Port for it.

When Innergie was running their Kickstarter, then named 55CC, they were getting some coverage in 2017. It retails now as Innergie 60C. They also sell a Magicable with it which makes the charger usable with many older non USB-C laptops but alas it seems it's only for the Innergie charger only , it's not a standard part. Lenovo has a similar USB C to older "slim tip" cable, the 03X7530, which they claim -- but so far this is unverified -- to be a standard part. It ships with their power bank, independently it seems to be unobtanium at this point.

> Turns out Discovery and Distribution aren't really a solved problem at all in the world of Internet.

Absolutely not, I am trying to find a shoulder bag for my new on call kit (the One Mix Yoga 2S makes it possible for me to not haul a 14" laptop for once-in-three-months-but-need-to-answer-them-immediately emergencies), the upcoming Dasung not-eReader will be a monitor for it) and it's amazing how much crap simple search finds and you need forums and reddit to find anything useful. There's no search engine for bags by dimensions, even worse, many webpages for bags do not have pocket dimensions on them (sometimes even the amount of pockets is unclear!) and I am like, why do you even have a webpage? Maxpedition is the gold standard for the latter (look at the dimensions tab of https://www.maxpedition.com/products/beefy-pocket-organizer?... ) but they don't have a by dimension search either. This is https://www.pacsafe.com/metrosafe-ls100-anti-theft-cross-bod... typical of a terrible web page. It touts the anti theft features but what you can pack in there is a total mystery. The photo makes it well visible there are two compartments but how big they are? You won't learn it from this page for sure. Finally, neither manufacturers nor bag reviwers will pack a bag to the gills and take a trip to the nearest airport and put the bag in a cage and show whether it fits personal item, carry on size or not. This would be, you know, useful.

As for two ports, check the Maru & Masa kickstarter.

This is Ben from ChargerLAB. We actually have the 27W GaN Anker USB-C charger in our hands for months. But my boss won't let me tear it down as it is the only one we have and there are some testings need to be done before we destroy it. We might dissemble the RAVPower 45W GaN USB-C charger next week though. I probably don't have the calibre to give a detailed explanation, but at least you guys will be able to see what it looks like inside from photos.

We have been hearing about gallium nitride power semiconductor since 2010 / 2011, and then again in 2014/2015, Why did it take so long to come to market? Cost?

( If it is cost then there is no hope of a nickel and dime fruit company to include it by default )

Mainly cost. Right now a GaN mosfet costs 10x more than a silicon one of similar power rating.

You are starting to see them in consumer goods where they can reduce the total system cost, or get the size down in premium goods.

For higher power stuff, they have to compete with silicon carbide which can handle very high temperatures, so your cooling needs are smaller.

[0]: IPAW60R380CEXKSA1 (silicon) costs $1.27, IGT60R190D1SATMA1 (GaN) costs $13.

Thanks... There goes my hope of Apple having it come with iPhone. $10 BOM is A LOT.

Cost, and the fact that it doesn't actually buy you much. I've evaluated GaN for a couple recent designs I've been involved in and found that its benefits simply didn't justify its costs.

What GaN actually does is, mainly, decrease switching losses. That means switching frequency can go up, or efficiency, or power density. These are all good things, to be sure, but the magnitude of improvement GaN brings to most designs is simply not large enough to justify the cost of the parts and the increased design attention needed to use them. (They're fussy little things.)

That said, I'm bullish on GaN in the medium-term. There are some cool tricks that are infeasible or impossible without them, and they really are better in a lot of ways. It'll just take a while for them to trickle downmarket, and even still they're not going to be replacing Si FETs anytime soon. (Part of the lag in GaN adoption is simply that Si FETs have gotten really, really good.)

Same opinion. If someone needs to improve power densities over buck, they will first switch to a better topology.

The main advantage of GaN is to allow simple buck converter to get smaller, and improve their power density. The biggest advantage is really the size.

May I know, are you working in electronics?

>The biggest advantage is really the size.

Which basically means no one is making enough marketing about this use case. Size of charger matters a lot. If it was Apple they will be very loud about it as Innovation. ( At least Consumer are willing to pay for it )

(To GP: Yes, I'm an electrical engineer.)

Yes, size is the main product-level advantage of GaN. But it only lets some of the system shrink; for something like a mains charger, you still need the isolation magnetics, so your overall size is still constrained. And at the power levels of a few watts that many chargers work with, Si FETs are simply good enough. A 5W USB charger isn't going to get any smaller with GaN. It only starts to get interesting with really high power densities.

> But it only lets some of the system shrink; for something like a mains charger, you still need the isolation magnetics, so your overall size is still constrained.

1. You can isolate with caps... if you trust their manufacturer. http://www.helixsemiconductors.com/uploads/cms_uploads/2018/...

2. Well if things go this way, one can go for "virtual isolation" with beefy mosfets, and pray that the gate fail before the junction melts to pieces. This is actually what apple recently patented.

Nice to meet an actual engineer here. What is your field of work?

What does GaN change?

Increased efficiency AND higher power density.

https://www.mouser.com/applications/advancing-power-GaN/ https://www.youtube.com/watch?v=sLuiGN3lNaA