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Home › News › Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review

Floyd
3 yearsagoNews
0 0

Xiaomi unveiled the world’s first 30W fast wireless charging technology and teased a 30W vertical air-cooled wireless charger at a special event in September. Now the Xiaomi 30W Vertical Air-Cooled Wireless Charger is officially on sale in China, which retails for 199 CNY (28 USD). Heres's our teardown review.


I Unboxing

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

The box features a large clear window for product display.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Side view.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

It is Qi certified.Model: MDY-11-EGInput: 5V-20V, 2.25A Max

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Package contents: wireless charger, power adapter, USB-A to USB-C cable, user manual.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

The USB-A to USB-C cable. It is a special cable that supports PD.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

The charger has a single USB-A port, the prongs are unfoldable.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Charger model: MDY-10-EX (It is also the Xiaomi 9 Pro 5G version's in-box charger)

Input: 100-240V, 50/60Hz, 1.2A

Output: 5V/3A, 9V/3A, 10V/4A, 20V/2.25A Max

Manufacturer: Salcomp (one of the world's power adapter manufacturers)

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

The wireless charger has a clean aesthetic with a top in white and a base in grey.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

It starts charging instantly when a phone is placed in.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Side view.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Rearview.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Each of the four corners of the base has a silicone anti-slip rubber pad.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Ventilation on the back. The fan is fairly quiet.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

The USB-C input port.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

A non-slip silicone pad on the base.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

The air exhaust from the gap.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Put the Xiaomi 9 in, it shows that it is getting fast wireless charging.


II Teardown

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

There are four screws under the rubber pads on the bottom.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

You can already tell it's a high quality charger at the glimpse of the inside, if you read a lot of our teardowns. On the top is a counterweight iron, which makes the wireless charging more stable. Below is the shield. A film capacitor is used as the resonant capacitor, which is reinforced with glue. There is a Bluetooth antenna on the right side.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Above the weight iron block is the light guide strip for the LED indicator, which is shaded by black tape.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Open the wireless charging cover. Below is a centrifugal fan that draws air from the bottom and blows the air out to cool the coil and the phone.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

The fan is fixed by two screws.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

A hydrodynamic bearing fan from Dongguan Hongying.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

The wireless charging coil and the thermistor are connected to the underlying circuit board by wires.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

The solder joints are well done.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

In the middle of the coil is a thermistor that detects the temperature of the phone.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Remove the parts all out.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

There are several test points on the back of the PCB, and the area for the resonant capacitor is hollowed out to reduce the thickness.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Close-up of the USB Type-C port.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Two shields, underneath are the main circuit of wireless charging.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

The resonant capacitor has a capacity of 0.25μF.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Force open the two shields reveals a wireless charging circuit, underneath the small shield on the right side is a Bluetooth circuit.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Inside the shield are a Bluetooth chip and a passive crystal.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

A 24MHz passive crystal.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

A Bluetooth chip with marking E96374.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Let's take a look at the wireless charging part. The wireless charging circuit has only two ICs, and the integration level is very high.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Cypress CYPD3171 USB Type-C port controller.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Detailed specifications of the Cypress CYPD3171.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

The NuVolta NU1513 is a highly integrated digital controller for 30W wireless charging transmitters that comply with the WPC EPP standard. Together with the NU1020's power ICs, it represents a simple, high performance, cost-effective wireless charging transmitter solution for a wide range of applications.
The NU1513 integrates all the basic functions to provide stable power and maintains stable communication with WPC-compatible receivers. The two-chip turnkey design works with the smallest, most integrated power stage IC NU1020 to provide a very space-saving solution.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

The NuVolta NU1020 is a highly integrated full-bridge power IC optimized for wireless charging transmitter solutions. The IC integrates all key functions such as high efficiency power FETs, low EMI FET drivers, bootstrap circuitry, 5V integrated DC/DC power supply, 3.3V (configurable 2.5V) LDO and lossless current measurement. A proprietary current measurement circuit provides accurate current reading for FOD (foreign object detection) power measurement, in-band communication, Q-value detection and digital demodulation.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Two Schottky diodes.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Vanguard Semiconductor VS3510AE PMOS for input protection.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Detailed specifications of the Vanguard Semiconductor VS3510AE.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

Size comparison with RMB 1 yuan coin.

Xiaomi 30W Vertical Air-Cooled Wireless Charger Teardown Review-Chargerlab

All the components.


III Conclusion


With a price tag similar to some of the premium single coil 10W wireless chargers, while offering much more charging power, the Xiaomi 30W Vertical Air-Cooled Wireless Charger seems like a wireless charger from a different category, just like the Huawei 27W SuperCharge Wireless Charger (CP61) we teared down earlier.


Sadly high wattage wireless chargers are all brand exclusive for now. Hopefully, in the future, we could have a universal high wattage wireless charging standard.


In terms of internals, the Xiaomi 30W Vertical Air-Cooled Wireless Charger continues the brand's thoughtful design and layout, with high quality components and a fan to ensure performance and longevity of the unit. The adoption of NuVolta wireless charging solution offers high integration, high performance, and high efficiency.


Pros:

30W wireless charging.

High quality components.

Reasonably priced (includes a 45W charger, 199RMB/28USD in China).


Cons:

30W wireless charging is limited to Xiaomi 9 Pro 5G version.


Source: chongdiantou

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