Disassembly report: Lenovo Lenovo 65W PD fast charging charger adlx65ucqc2a

Lenovo Lenovo recently launched a new type of 65W PD fast charging power adapter, which is specially designed for notebook computers. The laptop powered by usb-c port can basically be used. Another advantage of this new product is thathe body is very small, which is only half of the traditional "brick" Notebook Charger, and the carrying cost is greatly reduced. Next, the charging head network will be disassembled in detail to see how to design the interior.

1、 Lenovo 65W PD charger appearance Lenovo this charger comes with usb-c output cable, the body adopts square shape design, the surface is frosted, the front design has Lenovo brand and 65W power words. The input end adopts fixed GB pin.

The charger parameter information is marked on the shell

Model: adlx65ucqc2a

Input: 100 ~ 240V ~ 50 / 60Hz 1.8A

Output: 5v3a, 9v3a, 15v3a, 20v3.25a

Manufacturer: Qun Optoelectronic Technology Co., Ltd

The output end is provided with a fixed groove, and one end of the cable can be embedded in the groove to reduce the volume and facilitate the arrangement.

The cable is tied up with magic tie, and the cable body is smooth.

The plastic shell of the thread head is frosted. There are small grooves on the front and back, and convex teeth on both sides. It is convenient for users to plug and use. The usb-c rubber core is made of yellow plastic, which has a high degree of identification.

The measured length of charger body is 56.01mm by vernier caliper.

The width is 56.2mm.

The thickness is 28.69mm.

The cable length measured by tape measure is about 1.8m.

The total weight of the charger is about 176g.

Using chargerlab power-z kt002, the charger supports Samsung 5v2a, DCP and pd3.0 protocols.

In addition, the PDO message shows that the charger also has four groups of fixed voltage gears: 5v3a, 9v3a, 15v3a and 20v3.25a.

2、 When disassembling Lenovo 65W PD charger, the input and output terminals of the charger are connected by wires, and the circuit board can only be taken out after the casings at both ends are disassembled.

The top and side of PCB board are covered with brass heat sink, and the whole heat sink is pasted with insulating tape for insulation.

On the other side, it is fixed with transparent tape.

The back of PCB board is also equipped with brass heat sink and plastic board isolation.

When the heat sink is removed, it can be seen that the transformer is placed in the center of the front of the PCB board, and the two sides are glued and reinforced.

Gluing on the back helps to conduct heat and clean up. The primary boundary of charger is obvious.

At the input end, there are delay fuse, two-stage common mode inductor and X capacitor.
iPhone 12 charger
At the same time, Tongjia ld5763gs also has complete protection functions, such as OPP (over power protection), OVP (over voltage protection), fast oscp (output short circuit protection) and undervoltage / undervoltage protection, which can prevent the circuit from damaging under abnormal conditions. With frequency switching and soft drive functions, it can reduce noise and improve EMI. Its application fields include switching AC / DC adapter and battery charger open frame switching power supply.

Charging head network learned that Tongjia ld5763gs had been used by Nubia red devil 5g mobile phone original 55W PD fast charging, ThinkPlus 45W charger, ThinkPlus 65W charger, red devil 30W charger, Zimi 65W 2c1a desktop charger and other products. Summary of dismantling charging head net

Lenovo's 65W charger adopts square body design, body shell is frosted, and it comes with a 1.8m long output cable. With its small size, it is portable and easy to use. The charger supports pd3.0 fast charging protocol and has four voltage ranges of 5v3a, 9v3a, 15v3a and 20v3.25a to meet the power demand of devices supporting PD fast charging.
Apple Charger Cable
Through the disassembly of the charging head network, it is found that the switching power supply of the charger is composed of Tongjia ld5763gs main control chip with Infineon MOS, MPs mp6908 with Wandai synchronous rectifier, which outputs a wide range of voltage, and the protocol identification is carried out by Weiquan wt6633p to control the output voltage. Chips are from well-known manufacturers in the industry, solid materials. Jinshan single high-voltage filter capacitor with large capacity is used at the input. Compared with the traditional design with small capacity and large quantity, it looks more neat and reduces the charger volume effectively. The protocol IC data pin has TVs static protection, the output adopts solid-state capacitor, and the internal uses copper foil for heat dissipation. It is a qualified power supply.