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For 100W charging power, many people will think it belongs to PC,
but nowadays, smartphones can not only achieve 100W wired charging,
but 100W wireless charging.
This product is Xiaomi 100W wireless charging stand.
Firstly, let's unbox it.
A plastic bag is wrapped outside of the box.
The box is black.
And the upper left corner is the product name.
Xiaomi 100W Wireless Charging Stand.
The 100W wireless charging and 120W wired charging are printed at the bottom.
It contains the product, cable and 120W charger.
The side is also printed with the golden product name.
Specifications are on the back.
Here is the 120W charger and cable.
And here are user guide and warranty documents.
Firstly, the model of 120W charger is MDY-12-ED.
Maximum output power is 96W under the input voltage of 100-120V.
Maximum output power is 120W under the input voltage of 220-240V.
The USB-A port is specially designed
and can achieve 65W PD fast charging with a special cable.
And this is the special cable, which is USB-A to Type-C and length is about 1m (3' 3.37'').
Finally, let’s see the wireless charger.
There is a sticker on the front of the product, which can prevent scratches on the surface.
Another sticker is also at the bottom.
This charger continues the "sail" design of the previous generation.
It adopts black color and the surface is matted.
The base is composed of transparent acrylic.
The shape is somewhat similar to a prism.
You will have a special visual experience from all angles of the product.
Here is the Xiaomi logo.
The bottom is the air outlet.
Put your mobile phone on it, and the built-in fan will start to take the heat away during charging,
which can make the phone cooler.
A lightning logo is on the back.
The USB-C port is at the bottom.
The bottom is made of golden aluminum alloy.
And those gaps can become the air inlet of the built-in fan.
Let's see the specifications.
Model is MDY-13-EL.
It supports input of 5-20V 6A.
Maximum output power is 100W.
And it also passed the QI certification.
Compare to previous generation, 80W wireless charger.
In terms of appearance, the only difference between two products is color.
As for the changes inside the product, let's tear it down to see it.
You can see the internal module adopts "pyramid" design after opening the shell.
There are two transmitting coils on the front side.
And there's a thermistor in the middle of each coil, used to detect temperature.
And the back is the main PCB.
Remove all the screws and the active cooling fan at the bottom.
The fan is 5V 0.5A and has passed TÜV certification.
As for the wireless charging module,
we can see this side of PCB is the control circuit composed of SMD components.
The white circle is reserved to weld the shield.
The capacitors and inductors are on the other side.
The current comes in from USB-C.
The protocol chip here is used to identify
Xiaomi 120W fast charging protocol.
And other protocols, such as PD and QC.
Here is a voltage regulator circuit, used to power the power stage of wireless charging.
The master control chip is in the middle, used to control the four full-bridge power stage chips,
and those chips will drive two coils, making the charger work properly.
The input protocol chip comes from Infineon CYPD3171,
supporting QC4.0, APPLE 2.4A, AFC, BC1.2, etc.
It can dynamically adjust the output voltage of adapter to meet the needs of wireless charging.
The switching transistor for interface protection comes from Vanguard VS3510AE.
The voltage regulator circuit has a buck-boost controller from Southchip SC8701.
This chip can precisely adjust the output voltage based on different mobile phones.
It's also a synchronous buck-boost controller with four switches,
supporting input of 2.7V - 36V and output of 2V - 36V.
It can make full use of external MOSFET to achieve the highest efficiency.
The four external buck-boost MOSFETs come from Vanguard VS009NE6M,
used to drive the inductor on the back to regulate voltage.
Back to the master control chip in the middle, which comes from NuVolta NU1513.
This is a highly integrated digital controller that can provide stable power
and be used for a 30W wireless charging transmitter
that complies with the WPC EPP standard.
It can form a simple, high-performance, and cost-effective wireless charging transmission solution
when work with NuVolta NU1028.
Those four full-bridge power stage chips come from NuVolta NU1028.
Two of them are connected in parallel to drive one coil.
It also integrates driver, step-down circuit, and voltage regulator circuit.
And it supports lossless high-precision current detection.
Here are the solder joints of wireless charging coil and thermistor.
The step-down circuit is on the left side of master control chip.
This six-pin chip is the step-down controller from Silergy.
It can power the master control chip when working with the nearby step-down inductor.
Here is a Bluetooth microcontroller in the corner, which is used to connect the phone
and is responsible for the control of cooling fan and indicator light.
A crystal oscillator is next to it.
Here is the Bluetooth antenna, and the LED indicator is next to it.
There are an inductor and seven filter solid capacitors on the back.
Those two blue capacitors come from Capxon, 35V 110μF.
The other five red capacitors are all 35V 47μF.
Three coils in each set, and two sets of NPO resonant capacitors are at the bottom.
And the manufacturer logo, Luxshare Precision, is printed here.
Well, that would be all for the teardown of Xiaomi 100W Wireless Charging Stand.
If you have seen the previous generation of 80W Wireless Charging Stand,
you may find this one does not only continue the appearance design,
but the internal structure and materials haven't changed basically.
So, we can say it's the complete version.
The internal materials are mainly from NuVolta, Southchip, Vanguard, etc.,
which guarantees its quality.
So, if you have a Xiaomi smartphone that can support 100W charging,
this one must be your choice.
Ok, that's the end of today's video.
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