Disassembly report: Xiaomi 11 Pro / Ultra standard 67W fast charging charger

Xiaomi launched 11 pro and 11 ultra new machines at the "live forever" press conference. Both new machines are equipped with epoch-making new batteries made of silicon oxide anode material, and the energy density and service life have been greatly improved. In addition, they also support 67W wired and wireless fast charging, which can be filled in 36 minutes. Then, the new phone continues the environmental protection strategy of Xiaomi 11 mobile phone, which is also divided into standard version and package version. The price is exactly the same, and the choice of environmental protection is still left to consumers.

Xiaomi 11 Pro / Ultra package version comes with 67W fast charging charger, which is still a magic series of usb-a port. At the same time, it's on sale in Xiaomi mall at 129 yuan. The charger package supports Xiaomi's latest 11v6.1a private fast charging, and also supports 65W PD fast charging, which can be used for mobile phones and laptops. Then the charging head network will disassemble this magic charger in detail to see how it is made of materials.

Previously, the charging head network has disassembled several magic modified fast charging chargers, including original 55W Gan charger for Xiaomi 11, original 120W fast charging for Xiaomi 10 supreme commemorative edition, original 65W fast charging for Xiaomi 10 pro, original 45W fast charging for Xiaomi 9 pro, and original 33W fast charging for Xiaomi 33. You can click the blue font to read them if you are interested.

1、 Xiaomi 67W charger appearance

As a standard charger for Xiaomi mobile phones, it is sold separately. Its packaging box is also of simple style design, with MI logo, charger set diagram and name printed on the front.

The charger parameter information is printed on the back.

The package contains charger, data cable, instruction manual and Three Guarantees certificate.

Usb-a male close-up, positive and negative pole widening, used to pass 6A high current.

iPhone Adapter


The length of charging wire in the suit is about 102CM.

The charger is made of PC flame retardant material with white shell. The waist piano is painted. The front of the charger is printed with 67W words. The input end is equipped with fixed GB pins. The input shell is marked with charger parameter information

Model: mdy-12-es

Input: 100-240V ~ 50 / 60Hz 1.7A

Output: 5v3a, 9v3a, 11v6.1a, 20v3.25a

Manufacturer: Celcon (Guigang) Co., Ltd

The product has passed 3C certification.

Through the dismantling of the charging head network, we learned that the products manufactured by Celcom also include nut 55W PD fast charging charger, original 45W fast charging charger of Xiaomi 9 pro, apple 20W USB PD fast charging, Huawei 24W USB PD charger, Huawei 18W fast charging charger, and original adapter of Sony wireless charging. The product quality has been recognized by customers.

The usb-a port adopts orange red rubber core. The front end of the tongue piece is equipped with a special contact, which is used with the original line to realize the PD fast charging output.

iPhone Charger Adapter


The measured length of charger body is 58.65mm by vernier caliper.

The width is 54.17mm.

The thickness is 28.28mm. Compared with apple 61W charger, it has obvious volume advantage.

The intuitive feeling of holding it in the hand.

The net weight of the charger is about 111g.

Xiaomi 67W fast charging charger is used with the original data cable, and the charger supports Samsung 5v2a, DCP, qc2.0, qc3.0 and pd3.0 protocols detected by chargerlab power-z kt002.

With the original cable, the usb-a port has four fixed voltage ranges of 5v3a, 9v3a, 15v3a and 20v3.25a. In addition, it also supports Xiaomi private 11v6.1a private fast charging range.

2、 Disassembly of Xiaomi 67W charger

The fuselage shell was disassembled, and the ultrasonic welding package was very firm. It took several small hammers to crack a little.

The fuselage shell is pasted with buffering foam, and columns are set at both ends to fix the PCBA module.

The PCBA module covers the heat sink, and the side primary switch tube and the small heat sink are fixed together with screws.

There are black plastic plates between primary stages for isolation.

In addition to the heat sink, the components are glued to reinforce and help heat conduction.

At the back of PCB board, the first stage is hollowed out to pass through the isolation board.

Through the observation of PCB circuit, it is found that Xiaomi 67W charger adopts a typical switching power supply wide range output voltage, and the protocol chip controls the output voltage through the optocoupler. Let's start from the input to understand the components.

Summary of dismantling charging head net

As another standard charger for Xiaomi mobile phone, this 67W charger is still in the same style, with smooth and simple body, fixed pin and magic modified usb-a port, and is arranged on one side of the body. The charger supports Xiaomi's latest 11v6.1a private fast charging, and also has QC and PD universal fast charging protocols. It has 5v3a, 9v3a, 15v3a and 20v3.25a voltage ranges. For millet users, it can not only meet the needs of mobile phone fast charging, but also be used for PD fast charging devices such as laptop.

Through the disassembly of the charging head network, we know that this charger is back to the conventional design. The PWM controller of the switching power supply and the synchronous rectifier controller are customized models of Xiaomi, which are matched with the high voltage MOS transistor of the micro super junction and the synchronous rectifier of Weizhao. The protocol chip still adopts the wt6633p of Weiquan. Three Aihua capacitors are used for filtering at the input and solid-state capacitors are used for filtering at the output. The overall materials and workmanship are solid, and the standard remains the same.