I. Appearance of 65W PD chargers made in Beijing and Tokyo
The product packaging box is always a gray-white color matching style made in Beijing, with a hook at the top and the charger name, appearance picture and Beijing brand logo printed on the front.
Brand descriptions and charger parameter information made in Beijing and Tokyo are printed on the back.
A transparent plastic box is used in the packaging box to support and fix the charger.
The black shell of the charger is made of PC945/PC+ABS3 100, with a matte surface, a smooth arc transition on the side and a "J.ZAO" brand logo in the middle of the front.
The shell of the input terminal is marked with product parameter information. Product name: TC-025, model: 100-240V ~ 50/60Hz, 1.5A, output: 5V/3A, 9V/3A, 12V/3A, 15V/3A.
The input end is a folded pin, and the adjacent side surface is designed with a groove, which is convenient for users to take out the pin.
The output end is equipped with USB-C interface, and the black rubber core does not expose copper.
Compared with the size of Apple 6 1W charger, this one made in Beijing is smaller.
The net weight is about 139g.
Using ChargerLAB POWER-Z KT00 1 to test the output protocol of USB-C port, it shows that it supports Apple 2.4A and DCP protocols, as well as QC2.0 and QC3.0 fast charging protocols.
In addition, PDO news shows that USB-C port also supports the fast charging standard of USB PD3.0, and has five groups of fixed voltage gears: 5V3A, 9V3A, 12V3A, 15V3A and 20V3.25A
2. Disassembly of 65W PD chargers made in Beijing and Tokyo.
Remove the input housing and fix the pin with a white plastic plate.
Remove the pin end from the list, and fix the metal elastic sheet with the fixing post.
Take out the charger, and the front and back sides of the PCB board are equipped with heat sinks, which is helpful for heat dissipation.
The top heat sink is equipped with a heat conducting pad near the primary side, and an insulating tape is attached near the secondary side for insulation.
Remove the heat sink, glue on the top and around the transformer, and arrange the main components in order.
Through the observation and analysis of the charger circuit, it is found that this 65W USB PD fast charging charger made in Tokyo adopts a typical wide output range switching power supply and a secondary protocol chip to control the output voltage. Let's learn about each component from the input side.
The input of PCB is welded with delay fuse, safety X capacitor, * * * mode inductor and up to six high-voltage filtering electrolytic capacitors.
The specification of delay fuse is 3. 15A 250V.
The capacitance of safety gauge X is 0.33μF, which comes from DGCX Dongguan Chengxi Electronics Co., Ltd.
* * * mode inductance is used to filter EMI interference.
Two ABS2 10 rectifier bridges are used to distribute heat evenly.
* * Mode inductance is followed by two high-voltage filtering electrolytic capacitors.
There are four welds arranged neatly on the right side.
Six high-voltage filtering electrolytic capacitors are CyXincon brand, three of which are 400V 15μF, and the other three are 400 V 22 μ f. The total number of six capacitors connected in parallel is11μ f. ..
Side view of PCB board, welding two PWM main control chip power capacitors and high voltage switch MOS.
The power supply capacitance of a PWM main chip is 50 V10 μ F. ..
Hua Hong brand
The other is CyXincon brand.
The specification is100v10 μ f.
The main PWM control chip adopts OB2632. The chip supports PD power adapter and wide output range adapter, extends burst mode control to improve efficiency and reduce standby power consumption, and self-recovers cycle-by-cycle current limit and overload protection.
Details of amber OB2632. According to the charging head network, the products using OB2632 include Benks Bonkers 18W USB PD charger, ANKER single-port 30W USB PD charger A20 14, HELPERS LAB 2A2C 75W fast charging charger, Beijing-made 63W USB PD three-port fast charging charger, MOMAX 66W USB PD charger and so on.
Screen-printed SM65R380D high-voltage switch MOS, withstand voltage 650V, conductance 0.38Ω.
The transformer is wrapped with insulating tape, and the code spraying information can be seen by removing the top silicone.
The other side of PCB is provided with Y capacitor, secondary synchronous rectification MOS, output filter capacitor and filter inductor.
OR- 1009 optical coupler, spanning between primary and secondary communication, is used to adjust the feedback output voltage.
Output anti-interference blue Y capacitor close-up, from JEC Xuzhi Electronics.
The secondary synchronous rectifier controller is Lishengmei LN5S03, which is a high-performance secondary synchronous rectifier controller, supports a variety of switching power supply working modes, has large driving current and wide working voltage, and is suitable for energy-saving power adapters.
Details of Radisson Midea LN5S03. According to the disassembly of the charging head net, the products using this chip include Beijing-made 63W USB PD three-port fast charging charger, Besi 45W USB PD fast charging charger, XTAR EU4 charger, ALLMAYBE PD45 charger, and 43W four-port charger on the base of the old seventh machine, etc.
The secondary synchronous rectifier MOS comes from the core technology, the model is SW069R 10VS, NMOS, withstand voltage 100V, and is packaged in TO-220.
Core school SW069R 10VS information.
The output terminal is listed, the filter capacitor and inductor are fixed with glue, and the USB-C mother seat is vertically welded on the main control PCB with a small board.
The output filtered solid-state capacitor is 25V 820μF, which comes from JSH Yiyang Wanjing source.
The output filter solid capacitor is 25V 680μF, and the filter inductor is sandwiched between the capacitors.
Low-voltage filter electrolytic capacitor is CyXincon brand.
USB PD protocol IC model HUSB339, from Heineken Huinengtai, has passed USB PD3.0 certification, TID 62. HUSB339 is a high-performance and highly integrated USB Type-C power transmission controller, which integrates charging protocols such as PD2.0, PD3.0, PPS, QC2.0/3.0, BC 1.2, 5V2.4A, etc. Suitable for power adapter, car charger, mobile power supply and other applications; It has two packaging modes: SOP- 14L and QFN- 16L.
Huinengtai HUSB339 information.
The output VBUS switch of USB-C port adopts ZM078P03S, PMOS, withstand voltage of 30V and resistance of 7.8mΩ.
Real cat home ZM078P03S details.
Close-up of USB-C female seat, through-hole welding.
All dismantled, let's have a family photo.
Summary of disassembly of charging head net
This 65W PD fast charging charger made in Beijing supports QC2.0/3.0 and USB PD3.0 protocols, and has five groups of constant voltage gears: 5V3A, 9V3A, 12V3A, 15V3A and 20V3.25A, which can meet the fast charging requirements of most mobile phones and light notebooks.
By disassembling the charging head network, it is known that the 65W USB PD fast charging charger made in Beijing adopts the structure of wide-range output and output voltage protocol control of typical switching power supply. The AC DC part of the charger consists of OB2632 of high-voltage switch MOS and LN5S03 of low-voltage MOS, and the output voltage is controlled and adjusted by HUSB339 of USB PD protocol chip of Huinengtai. In addition, the input and output are filtered by CyXincon brand electrolytic capacitor, and the output end uses Wanjingyuan solid-state capacitor with electrolytic capacitor to reduce ripple.
The charger has compact internal structure and orderly welding of all parts. The front and back sides of PCB board are equipped with large heat sinks to evenly dissipate heat. In addition, plastic board and adhesive tape are used for isolation and insulation, and low-voltage rectifier MOS is added with small heat sinks. Glue transformer and output filter capacitor to enhance internal stability.