In August this year, China Mobile independent research and development, independent brand 5G mobile phone “pioneer X1” officially released. The rear three-camera, using an optical under-screen fingerprint sensor, supports QC3.0 18W fast charging and 10W wireless charging. To this end, China Mobile has launched three supporting wireless chargers to cope with different use scenarios, including: China Mobile Ultra-Thin Fast Wireless Charger, China Mobile Vertical Fast Wireless Charger, China Mobile Wireless Charging Smart Car Stand.
Next to bring you is, where the horizontal model corresponds to China Mobile ultra-thin fast wireless charger out of the box disassembly.
First, China Mobile ultra-thin fast wireless charger out of the box
The product uses a white carton, the front is printed with the outline of the product, very simple.
The front is printed with the product name: China Mobile ultra-thin fast wireless charger. And the product is compatible with 10W / 7.5W / 5W.
The back of the package is a detailed specification.
Entered: 5V2A, 9V1.67A
Output: 10W (MAX)
Recharge: QC2.0 / QC3.0 adapter
Charging conversion rate: s72%
Size: 101 x 101 x 6.3mm
Side for product characteristics: perfect compatibility, overcurrent protection, overpressure protection, foreign object detection, overtemperature protection.
Open the package.
Packing content: wireless charger, data cable, instruction manual.
The cable interface type is Micro USB.
The wireless charger body is designed in a minimalist design with a striking center featured China Mobile China Mobile’s signature Logo.
There is a Micro USB input on the side.
There is a non-slip foot in each of the bottom four corners.
The main specification parameters are printed in the middle of the product.
The body is slim, only 7mm thick, and small and portable.
There is a ring of soft breathing lights around to indicate the working state.
When the QC charger is powered on as a power adapter, the phone can be charged wirelessly. Officially, the product supports the regular 5W, Apple 7.5W (iOS 13 below) and Android 10W wireless charging mode.
Second, China Mobile ultra-thin fast wireless charger dismantling
Unscrew the screw from the bottom footpad and turn on the wireless charge.
The back of the cover is a double-sided adhesive that is attached to the coil.
The circuit board is ring, the inside is the wireless charging coil, the center of the coil is the thermistor, detecting the temperature rise during the wireless charging process.
Remove the circuit board and coil, the magnetic sheet is firmly fixed to the aluminum alloy housing, easy to dissipate heat.
On the front of the board, only the main chip and drive tube have resonant capacitors.
There are no components on the back of the board, and the location of the resonant capacitor is hollowed out to place the capacitor and reduce the thickness.
Enter the Micro-USB master seat sink board weld, with two current sampling resistors at the input.
Wireless charging resonant CBB capacitor, reserved for 1206 package NPO capacitor position.
The 7533 regulator tube reduces the input voltage to 3.3V to supply power to the main control IC.
The Core IP6808 is a wireless charging transmitter SoC control chip, compatible with the latest WPC Qi v1.2.4 standard, supports A11 coil, support s5W, Apple 7.5W, Samsung 10W charging. Ip6808 detects the wireless receiver through analog pings and establishes communication with the receiving end to start power transmission. THE IP6808 DECODES THE COMMUNICATION PACKETS SENT FROM THE RECEIVER AND THEN USES THE PID ALGORITHM TO CHANGE THE OSCILLATION FREQUENCY TO ADJUST THE OUTPUT POWER ON THE COIL. The IP6808 terminates the power transfer once the battery on the receiver is fully charged.
In addition, the in-chip integrated full-bridge drive circuit and voltage and current two ASK communication demodulation module, high integration, reduce the size of the scheme and BOM costs. Applicationproducts include: back clips, wireless charging base, on-board wireless charging equipment.
Silkscreen H21 LM321 single-shipment.
The wireless charging power tube comes from the Crystal Electronics SSC8428 NMOS, SOT23 package.
Crystal Electronics SSC8428 Details.
Close-up of thether.
All disassembled at a glance.
Third, charging head net dismantling summary
China Mobile ultra-thin fast wireless charger cleverly designed, With the market has been popular QC3.0 charger, can support the mobile phone wireless fast charging, its built-in British core IP6808 wireless charging transmitter SOC chip, greatly reducing the number of components, the past single-chip machine plus transport and drive IC, now only need a chip to complete all functions, save materials and production costs, make the product more competitive, Become the best solution.