Xiaomi 55W vertical air-cooled wireless charger disassembly, real wireless flash charging, internal workmanship absolute
On August 11th Lei Jun held a public speech on the 10th anniversary of millet, and released the millet 10 Supreme Commemorative Edition cell phone, charging, cell phone built-in graphene-based butterfly fast-charging battery, support 120W wired second charging + 50W wireless second charging + 10W wireless reverse charging. In addition 100W car charger, intelligent tracking wireless charger, vertical wireless charging treasure and vertical air-cooled wireless charger and a series of accessories are also launched simultaneously.
Xiaomi vertical air-cooled wireless charger from the body to the box, with a new black and gold color scheme, which supports 55W wireless fast charging, 40 minutes can be filled with Xiaomi 10 Supreme Commemorative Edition. In addition, the product comes with a special stand and a built-in turbo fan that actively dissipates heat to keep the temperature at a low level throughout the wireless charging process. Previously, ChargeHead.com has reviewed and disassembled related accessories one after another, and today we continue to share with you the disassembly of this wireless charger to see how its internal design is again.
First, the appearance of the millet vertical air-cooled wireless charger
The box is black and gold color scheme, the shape of the square, new and design style. The front of the box is printed with the millet brand logo, product name and conspicuous 55W power words.
The top of the box has a hook, and the back is printed with wireless charging parameters.
The top of the box has a long small cardboard box, which contains a special stand for Xiaomi Ten Supreme Commemorative Edition.
All the contents of the package at a glance, including the wireless charger, stand, three bags of proof and instructions.
The top surface of the stand is a soft rubber pad with stripes and a raised plate design to protect the phone and avoid slipping.
The design of the stand is inspired by mortise and tenon, with a groove at the bottom that allows it to nestle into the front of the wireless charging base.
Xiaomi's 55W vertical air-cooled wireless charger is made of PC flame-retardant plastic, with a curved body with distinctive edges and corners, a black support plate, and a sandblasted golden base.
From the front, there is an LED indicator at the front of the base, and the support plate is layered on top and bottom with different designs.
The indicator lights up green when it is working.
The lower part of the support plate has a matte finish and is printed with "55W", "xiaomi", "Xiaomi Communication Co. Designed by Xiaomi", the gold font echoes the base.
The top shell is striped.
The support plate is stepped when viewed from the side, and the difference in thickness between the top and bottom ends creates a gap between the phone and the support plate, which is combined with the air vents in the center of the support plate to blow air to achieve active cooling.
The back of the support plate has mesh holes for airflow windows.
The back of the base is equipped with a USB-C input port with a black rubber core that does not show copper.
The bottom of the base is equipped with a non-slip rubber pad, and the center is marked with product parameter information
Product Material PC
Model No. MDY-12-EN
Input: 5-20V 3.25A Max
Output: 55W Max
Manufacturer: Xiaomi Telecom Technology Co. Manufacturer: Kunshan Luantao Electronics Co.
The product has passed Qi certification.
A list of the actual usage scenarios of the product, if it is a Xiaomi 10 Supreme Commemorative Edition phone, you need to put a stand on the base.
Place the 4% charged Xiaomi 10 Supreme Commemorative Edition on the wireless charger, and the display shows "TURBO CHARGE", indicating that fast charging is in progress.
Xiaomi 10 Supreme Commemorative Edition supports 50W wireless fast charging, at this time using ChargerLAB POWER-Z KM001C measured wireless charger input power reaches 17.0V 3.0A 51.1W.
63% of the power of the Xiaomi 10 Pro on the wireless charger, display " TURBO CHARGE", indicating that it is undergoing fast charging. TURBO CHARGE", indicating that fast charging is in progress.
Xiaomi 10 Pro supports 30W wireless fast charging, at this time using the KM001C measured wireless charger input power reaches 17.9V 1.8A 31.9W.
Second, Xiaomi Vertical air-cooled wireless charger disassembled
The bottom of the anti-slip pads removed, the internal screws on the bottom case to encapsulate the fixation.
Remove the bottom anti-skid pad.
Remove the screws at the corners to open the case.
The PCB board and counterweight iron block are fixed with screws and fixed posts, the middle area of the iron block is pasted with foam adhesive, and the red resonance capacitor is fixed with adhesive to dissipate heat.
Tear off the foam adhesive, below is the light guide plate and black wires, the PCB board and wireless charging coil are connected by wires.
The support board is fixed by an iron block, which can be removed by removing the iron block.
The case of the support board is encased in a snap-on package with a built-in wireless charging coil and a centrifugal fan. The coils and wires are soldered and the solder joints are protected with adhesive; the fan is fixed with screws.
There are two shields on the front of the PCB.
Remove both shields, the left shield contains the fan and LED light control circuit, and the right shield contains the wireless charging circuit.
A look at the back of the PCB, with perforated holes to enhance heat dissipation, skeletonized capacitors, and a printed antenna on the right.
The USB-C female chassis is countersunk and welded through the holes, with KRCONN on the metal casing, courtesy of Shenzhen Jingrui Xingye Technology Co.
The right wireless charging control circuit at a glance.
The USB-C port controller adopts Cypress CYPD3171. CYPD3171 is Cypress's third-generation product, CCG3PA, which has a built-in ARM Cortex-M0 processor, 64KB Flash, 8KB SRAM, and support for charging protocols such as QC4.0, APPLE 2.4A, AFC, and BC1.2. wireless charger requirements, and dynamically adjust the output voltage of the adapter.
Cypress CYPD3171 Specifications.
The Voltar Semiconductor NU1513 is a highly integrated digital controller that incorporates all of the essential functions to deliver consistent power and maintain stable communication with WPC-compliant receivers for use in WPC EPP-compliant 30W wireless charging transmitters. Together with the NU1025 companion power stage IC, this device forms a simple, high-performance, cost-effective wireless charging transmitter solution for a wide range of applications.
Voda Semiconductor NU1513 datasheet information.
The Voda Semiconductor NU1025 is a highly integrated, intelligent full-bridge chip optimized for wireless charging transmitter solutions. The device integrates all key features such as high efficiency power FETs, low EMI FET drivers, bootstrap circuitry, a 5V integrated DC/DC supply, a 3.3V (2.5V configurable) LDO and lossless current measurement. In addition multiple protection features are available in a 4mm 4mm QFN package.
Voltar Semiconductor NU1025 datasheet information.
Voltar Semiconductor VS3510AE, PMOS, 30V withstanding voltage.
Voltar Semiconductor VS3510AE datasheet.
Silkscreen ENCAA step-down IC to power chips like wireless charging master.
0.25μF 400V CBB21 film resonant capacitor.
Close-up of the wireless charging coil, tightly wound with a thermistor in the center for temperature monitoring.
Printed antenna on the left side of the board.
Inside the shield is an IC that connects to the printed antenna for wireless connectivity. Wireless charging TX and RX communication is divided into in-band communication and out-of-band communication, in-band communication is the original way to add the communication packet to the resonant circuit by means of a coupling coil carrier; out-of-band communication is through Bluetooth, which is very stable in order to avoid the risk of packet loss in wireless charging.
Silkscreen EAS311.
24.000MHz passive crystal.
Close-up of the LED indicator.
Close-up of the fan power socket.
Parameter sticker on the front of the fan, model number B55D5HB2031, supports 5V0.4A input, from Dongguan Hongying Electronic Technology Co.
All disassembled, take a family photo.
Charging headset disassembly summary
Xiaomi 55W vertical air-cooled wireless charger vertical panel with a double ladder design, the front and back are equipped with a wind and wind window, active cooling to make wireless charging more stable and faster. As the family's first product with black and gold color scheme, highlighting the special nature of the best wireless charging accessory as the Xiaomi 10 Supreme Commemorative Edition, the 55W wireless fast charger can fill the phone in 40 minutes. It is also backward compatible with Xiaomi's 30W and 20W private wireless chargers, and can also wirelessly charge phones that support the EPP protocol.
ChargeHead.com learned through disassembly, the PCB board has two shields, the large shield is the wireless charging control circuit, USB-C input using Cypress CYPD3171 control, wireless charging program using the Voda Semiconductor NU1513 + NU1025 high-integrated wireless charging program, the circuit is simple and well-functioning; the small shield is a wireless connection IC, the information is not available. Information is not available.
Auto Sync with Cloud
No manual interaction required to synchronize with cloud services.
It is worth mentioning that the Xiaomi 55W wireless charger, in addition to the traditional coil-coupled communication, also innovatively added the Bluetooth communication method, reducing the risk of avoiding packet loss between the wireless charger and the phone.