REDMAGIC DAO 80W Desktop Air-Cooled Wireless Charger Teardown

The newly released Red Magic 11 PRO+ supports 120W wired fast charging and 80W wireless fast charging. For the upgraded wireless charging feature, Red Magic has specifically designed an 80W air-cooled wireless charging stand. This stand not only meets the high-power wireless charging needs of the new phone but also features a built-in 5000 RPM high-speed fan that can automatically adjust its speed based on the charging power, enhancing the user's wireless charging experience.

Additionally, the product includes a 120W fast charging set, which can power the Red Magic 80W air-cooled wireless charging stand or directly charge the phone via cable. This meets all-scenario charging needs without requiring the purchase of any additional accessories. Below, let's take a detailed look at the design of Red Magic's new high-power wireless charging product.

Red Magic 80W Air-Cooled Wireless Charging Stand Unboxing

The front of the packaging box features the Red Magic brand logo and product name embossed with a 3D hot stamping process.

The back has a sticker with product information.

Close-up of the sticker shows the product parameters, which will be introduced again in the physical product display section.

The package contains the Red Magic 80W Air-Cooled Wireless Charging Stand, a 120W charging set, and the user manual.

The included cable is a 6A USB-C to USB-C cable with a distinctive red and black color scheme. The cable sheath is made of silicone, making the entire cable flexible and pleasant to the touch.

The measured cable length is approximately 1 meter.

The included charger is a 120W USB-C single-port fast charger. It has a classic straight design with a black shell, and the waist features a high-gloss finish.

Close-up of the parameters on the input side:
Model: STC-A11602060AC1
Input: 100-240V~50/60Hz 3.0A
Output: 5V3A, 9V3A, 15V3A, 20V2.25A, 5-11V-6A, 5-20V6A Max
Manufacturer: Shenzhen Kunxing Technology Co., Ltd.
The charger has passed CCC certification and VI-level energy efficiency certification.

Using the ChargerLAB POWER-Z KM003C, it was measured that the charger's USB-C port supports QC3.0/4+, PD3.0, PPS, and DCP charging protocols.

The PDO message shows the USB-C port also has four fixed voltage levels: 5V3A, 9V3A, 15V3A, 20V2.25A, and two PPS voltage levels: 5-11V4A and 5-20V2.25A.

The Red Magic 80W Air-Cooled Wireless Charging Stand uses a PC flame-retardant plastic shell. The body features a Deuterium Silver and black color scheme, with an overall ultra-futurist element design, giving a strong sense of hardcore technology.

The body has a slanted stand design, functioning both as a wireless charger and a phone stand, allowing users a great experience for using their phone while charging.

The front panel of the wireless charger features a carbon fiber texture design to further enhance the quality feel. It is also printed with the Red Magic brand logo, "80W WIRELESS CHARGER", the wireless charging area, and arrow indicators.

The panel has built-in dual coils, allowing for wireless charging in both horizontal and vertical orientations, meeting usage scenarios like watching videos full-screen while charging.

A phone support platform and an LED indicator are designed below the front panel.

The support platform has a non-slip protective pad. Additionally, there is an air outlet next to it. The panels on both sides are designed with raised small boards, which naturally form an air channel when the phone is placed. The built-in fan blows cool air to dissipate the heat generated during the wireless charging process, ensuring a good user experience.

The back of the wireless charging panel is printed with product parameter information.

Close-up of product parameters:
Name: Red Magic 80W Air-Cooled Wireless Charging Stand
Model: PA0404
Input: 5-20V6A Max
Output: 80W Max
Manufacturer: Nubia Technology Co., Ltd.

The base's back features a USB-C power input port, with an air intake vent below it to improve airflow.

The bottom of the body has the main air intake vent, with non-slip pads attached on both sides.

The measured length of the wireless charging panel is 128.46mm.

The width is 67.31mm.

An intuitive feel of the product's size in hand.

Additionally, the measured weight of the Red Magic 80W Air-Cooled Wireless Charging Stand is about 210g.

When powered on and charging wirelessly normally, the LED indicator stays on. It blinks to alert the user in case of protection or error status.

Red Magic 80W Air-Cooled Wireless Charging Stand Teardown

The carbon fiber texture decorative panel on the front is removed, revealing hidden screws inside.

Remove the screws to open the wireless charging panel.

The LED indicator small board is fixed with screws. The connecting wires use a plug-in design and are wrapped with conductive cloth.

A support plate is also installed inside the body. The wireless charging coils are fixed to the support plate with double-sided tape.

The support plate is fixed by screws on both sides.

Remove the screws and take out the support plate. The bottom PCBA and fan module are fixed with screws.

Remove the screws and take out the entire functional module. The PCB is fixed to the top of the fan with screws, connected via plug-in wires.

The solder joints between the wireless charging coils, thermistor, and PCB are treated with glue. Conductive cloth is attached to one side of the shield.

The two wireless charging coils are placed on magnetic isolation sheets, with edges treated with glue. A thermistor is also present for temperature monitoring.

The front of the PCB is covered with shields. Components on both sides include VBUS switch tubes, filter solid capacitors, filter inductors, and NPO resonant capacitors.

After removing the shields, the area reveals the synchronous boost switch tubes, wireless charging coil switching MOSFETs, synchronous buck converter, and multiple inductors.

The circuit on the other side of the board is also covered with a shield, and the USB-C port female connector is soldered here.

After removing the shield, the area reveals the wireless charging main control chip, clock crystal oscillator, and wireless charging power tubes.

The input VBUS switch tube is from AGMsemi, model AGM30P08AP, a PMOS tube, rated -30V, 7.2mΩ conduction resistance, in a PDFN3.3*3.3 package.

The filter solid capacitor is from Beryl, specifications 35V47μF.

Close-up of the filter inductor.

The wireless charging main control chip is from E-Charging Semiconductor, model CPS8200. It is a highly integrated wireless charging transmitter chip, integrating a 32-bit processor, built-in 64+2KB MTP, 32KB ROM, and 2KB SRAM. The MTP supports read/write protection and can be programmed via CC and DPDN. The chip has two I2C interfaces and two UART interfaces. It integrates a switching buck converter, linear regulator, DC-DC controller, full-bridge driver, and communication module, with multi-channel 12-bit ADC.
E-Charging Semiconductor CPS8200 supports QC2.0/QC3.0/PD3.1/SCP/AFC fast charging. It internally integrates three and a half pairs of bridge drivers, supports boost or buck conversion, and supports fixed frequency voltage regulation charging. Paired with corresponding MOSFETs, it can achieve a complete Qi2 wireless charger product. The chip supports a 24V supply voltage, and the power stage supports a 45V supply voltage. The chip integrates over-voltage, over-current, and over-temperature protection functions.

Close-up of the external 40.0MHz clock crystal oscillator.

Paired with a 10μH inductor for buck conversion to achieve self-power supply.

The synchronous boost switch tube is from AnSemi, model ASDM100R066NQ, an NMOS tube, rated 100V, 5mΩ conduction resistance, in a DFN5*6-8 package.

Close-up of the 6.8μH boost inductor.

The two filter solid capacitors are from Emerald, both rated 50V47μF.

Four wireless charging power tubes also use AnSemi ASDM100R066NQ.

Another four MOSFETs used for wireless charging coil switching also use AnSemi ASDM100R066NQ.

Close-up of the NPO resonant capacitors.

Close-up of the other set of NPO resonant capacitors.

The synchronous buck converter for the power supply is from Silergy, marked 330C, model SCT2330C. It is a synchronous buck converter with a 3.8-28V input voltage and 3A output current. The chip integrates switching tubes and supports output over-voltage protection and over-temperature protection, in a TSOT23-6L package.

Close-up of the paired 10μH buck inductor.

Close-up of the wireless charging coil.

Close-up of the thermistor.

The cooling fan is housed in a shell that completely encloses it except for the air intake and outlet, preventing air leakage and improving cooling efficiency.

The cooling fan is from Quanjing Technology Co., Ltd., model CS0551505AAH, specifications 5V0.5A.

A look at all components after the teardown - the family photo.

ChargerLAB Teardown Summary

Finally, attached is the core component list of the Red Magic 80W Air-Cooled Wireless Charging Stand for easy reference.

The Red Magic 80W Air-Cooled Wireless Charging Stand adopts an ultra-futurist design, full of technological feel. The slanted stand body and built-in dual coils allow for wireless charging in both horizontal and vertical placements, and it can also be used as a stand, providing users with a great experience for using their phone while charging. Additionally, the built-in active cooling fan can adjust its speed based on real-time charging power, effectively reducing temperature rise and energy consumption, enhancing the wireless charging experience.

Through the teardown, ChargerLAB learned that this product is designed based on the E-Charging CPS8200 wireless charging solution, paired with AnSemi MOSFETs for input boost, wireless charging drive, and coil switching. Additionally, it uses Emerald and Beryl capacitors for filtering. Both the front and back of the PCB are covered with shields, and the coils are equipped with thermistors for temperature detection. The overall workmanship and materials used are reliable.