My eighth #USB #TypeC
analysis is a charger on loan from Benson, and highly noncompliant: the AUKEY 60W with QC 3.0. [Model PA-Y6]tl;dr: Breaks many rules.
Vbus HOT. Bridged CCs. Burns energy at idle. I got this for free -- and I want my money back!!https://www.amazon.com/dp/B01EXWXVWO/
[PDF of Compliance Checklist for AUKEY PA-Y6]https://drive.google.com/open?id=0B2OJRSgNnm4GZTBFVmdTdGc3TlU
This is my second review, first failure, in the new format: less data, more to the point. This charger is 110% bad. There's no way I'd recommend this (And I'm not just talking about the QC-on-USB-C part.
I actually had to create a stamp to show the individual errors they did. (And highlight exactly what +AUKEY Official
needs to do so they can potentially fix it.) In order of severity:
* First and most deadly, this charger is Vbus HOT
. That means it cranks out amps with no regard for what's down the line. See the photo. I'm drawing 6 amps of current without ANY notice that a device is connected. If the receptacle gets shorted out, or you plug an A-to-C cable into it, kiss your motherboard goodbye.
[184.108.40.206 USB-based Chargers with USB Type-C Captive Cables]
* Second, AUKEY bridged the CC pins. With Vbus HOT the CC pins were already not useful, only used to signal 3A current with a pullup. But AUKEY also bridged them internally. This means ANY
active or eMarked cable (read: good ones, USB3.1Gen2, Thunderbolt 3)
will cause major problems!
[220.127.116.11.1 Detecting a Valid Source-to-Sink Connection]
For example, Benson's Pixel Chromebook interprets the cascade of electrical failures that occurs with eMarked cable+bridged CC pins as a "device being plugged in"
. So the Pixel starts trying to deliver current out. Combine this with a Vbus HOT charger fighting it backwards with 6A over Type-C, and you might just fry your laptop!
See my post here explaining why Vbus HOT is so darn dangerous (using Thevenin Equivalent Circuits):https://plus.google.com/102612254593917101378/posts/GEvCNc5hARR
* Third, it has QC on USB-C connectors. This is bad because the only way you should change voltage on Type-C is over USB-PD. So it was an automatic fail -- but the rest was icing on top.
[4.8.2 Non-USB Charging Methods]
* Finally, even with a 60W charger with QC circuitry, AUKEY somehow messed up sleep settings in the microcontroller so it draws around .5W at idle. That may not seem like much, but given that whole "Energy Star" thing, and the fact the vast majority of other chargers nowadays consume 0 watts at idle, this is again indicative of major design oversights. (Also, 80% efficiency when most other chargers get 90%+.)
Data is attached as a PDF this time. Look if you want to see some pretty red ink.
Avoid this charger at all costs. It gets a rating of 1 star for the combination of failures. The only thing it has going for it is the internal circuitry seems capable of 6A output (at least), so with a MAJOR
redesign to be compliant it might be fixable.BONUS: This is the EXACT combination of failures that can cause the situation described here: plug in a LeEco or Moto Z with a USB-C headphone jack, and use an active cable, and you're driving straight into bat country.https://plus.google.com/102612254593917101378/posts/7Cjq1yS2CHz(Edit 7/26):
I would like to point out minor gripes like poor efficiency are just indicative of larger systemic problems. You can read more about the DOE/Energy Star requirements for energy here:http://electronics.stackexchange.com/questions/6123/how-much-power-is-really-wasted-by-a-wall-warthttp://www.cui.com/efficiency-standards#USBC