Hi, Welcome back to ChargerLAB.
Not long ago, we revealed Google's unreleased 65W charger on Twitter.
And we take it apart immediately.
ChargerLAB found that it didn't adopt GaN components, but it can still be so small.
So, let's take it apart and find out the reason.
Firstly, it's just the prototype. We are not sure if it will be released and
when it will be released.
It adopts pure white, except for the bottom, which is black.
It adopts foldable pins. And the USB-C is on the top.
The letter "G" is engraved here.
Let's take a look at the specs.
Model is G8JK8LPS.
It supports input of 100-240V~ 50/60Hz 1.5A
and output of 5V3A, 9V3A, 12V3A, 15V3A, 20V3.25A.
It also supports PPS of 3.3-21V 3.25A, and the maximum power is 65W.
Manufacturer is AcBel technology.
The charger is even a little bit smaller than Google 30W.
Compared to Apple 61W charger, The size is just half of it.
And compared to Apple 20W charger, just slightly longer than that.
The length is about 51.59mm (2.01 inches).
The width is about 42.7mm (1.65 inches).
Thickness is about 25.85mm (1.02 inches).
So, the power density is 1.13W/cm³.
The weight is about 88g (3.1 oz).
Use ChargerLAB POWER-Z KT002 to test the protocol.
It supports QC, PD, and PPS fast charging protocols.
And the PDO information is the same as what's printed on the bottom.
Then, let's take it apart.
The internal module is connected to the plug through two wires.
We cannot take out the internal module.
So, we have to use the Dremel to destroy the shell.
OK, finally, we made it.
Here is the heat sink.
And a layer of copper foil is attached to the heat sink.
The black insulating plate is between the heat sink and the PCB components.
After removing the heat sink.
We can see the internal module is composed of multiple PCBs.
The silicone adhesives and thermal pads are used for heat dissipation.
Clean it up. A small PCB at the input is between two main PCBs,
used for conduction and support.
And the USB-C is soldered to another small PCB at the output.
The third small PCB is next to it, and the protocol chip is on it.
ChargerLAB found it adopts high-performance active clamp flyback topology.
And the protocol chip can control the output voltage.
The entire module is very compact.
Then, we will introduce all components one by one.
The SMD fuse is very small, 250V.
There are two common mode chokes, used to suppress EMI interference.
And the yellow insulating plate can isolate it from PCB.
Those three diodes are used to form the bridge rectifier circuit.
Another same diode is on the other side.
There are no components on the input small PCB,
just to connect and support two main PCBs.
The large capacitor on the primary circuit comes from Rubycon.
400V 82μF.
The primary controller comes from Texas Instruments UCC28780.
Working frequency can be up to 1MHz.
It can support GaN FET and integrates multiple protective functions.
And the driver also comes from Texas Instruments, model is UCC27712.
It has dual inputs with output interlock.
Those two MOSFETs of the primary circuit adopt Infineon CoolMOS IPL60R185C7.
600V, 185mΩ.
Here is the transformer.
The SMD Y capacitor between the primary and secondary circuits comes from Murata.
And the COSMO optocoupler is next to it, used to communicate and adjust the output voltage.
The synchronous rectifier controller of the secondary circuit comes from MPS MP6908A.
And its maximum switching frequency can reach 600kHz.
The synchronous rectifier MOSFET comes from ON Semiconductor.
There are two Kemet tantalum capacitors at the output, which are connected in parallel
and used for output filtering.
Here are two solid capacitors.
The first one is 25V 330μF.
The other one is 25V 220μF.
The output VBUS MOSFET comes from Infineon BSZ035N03MS G,
Withstand voltage is 30V.
The output filter inductor comes from Würth.
The protocol chip is in the middle of the small PCB.
Model is Weltrend WT6633P.
It supports PD3.0, QC4, QC4+, QC5 and passed the USB-IF certification.
It also integrates 8051 core, output current sensor,
constant voltage & current controller, and complete protective function.
This is the USB-C receptacle.
Well, that's all components inside of Google 65W charger.
The first impression is its compact size, and many people will regard it as a GaN charger.
But it's even smaller than Google 30W without GaN components.
The ACF topology can bring high efficiency,
and multiple PCBs can make full use of the space inside and further reduce the size.
And that's the reason why it can be so small.
Most components come from well-known international brands, such as Infineon, Texas Instruments,
ON Semiconductor, Weltrend, and Rubycon.
However, since this is only a prototype, all the information above is for reference only.
OK, that's all for today's video. Hope you'll like it.
You can click the corners to view the teardown videos of other powerful 65W chargers.
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See you in the net video. Bye.