The charging head network has obtained an ultra-thin model launched by Mingpu Optical MagneticGallium nitrideFast charging, this charger adopts the national standard folding pin, popular ultra-thin design, and the measured body thickness is only 13mm, which is very convenient for daily carrying and storage.The charger supports 100-240V AC input, and the output is a single USB-C interface65WOutput power.
Measured charger output has65WPD fast charging also supports PPS fast charging and mainstream brand Android mobile phone fast charging protocols, which can meet the fast charging needs of laptops, Android mobile phones and tablets.Here comes Mingpu Optics and Magnetics, which is super thinGallium nitrideTake a look at the internal scheme and materials for the disassembly of the charger.
Mentech brand65WThe name of GaN Travel Ultra thin Charger, the product appearance sketch, and the product color matching logo on the lower right corner can intuitively understand that this charger is cherry blossom pink color matching.
The design of the top and bottom cover of the packing box is printed with the product specification parameters, packing list and relevant information of the manufacturer.
A close-up of the parameters on the packaging box will be introduced in detail in the physical display link below.
The charger and instructions are included in the package.
When the charger is taken out, it is covered with a protective film to prevent the body from scratching. The details are exquisite.
Mingpu Photomagnetic65WGallium nitrideThe fast charging charger is a very popular ultra-thin shape design. At the same time, there is a concave ring near the output end, which is very characteristic.The fuselage is made of PC fireproof plastic shell, and the high gloss surface treatment is very smooth. In addition to the cherry blossom powder color matching, the overall appearance is also remarkable.
The fuselage top is printed with mentech brand and 65W GaN.
Close up of brands and parameters.
The detailed parameters of the charger are printed on the bottom of the body.
Close up of charger parameters
Model: MCCS-20032565P5
Input: 100-240V~50/60Hz 1.8A
Output: 5V3A, 9V3A, 12V3A, 15V3A, 20V3.25A 65W MAX
Manufacturer: Jiangxi Mingpu Electronics Co., Ltd
The charger has passed CCC certification.
The charger is equipped with foldable national standard pins, and is very portable with the ultra-thin body of the charger itself.
The output end is configured with a single USB-C interface, centered layout.
The measured length of charger body is 81.25mm.
The width is 43.27mm.
The width is 12.96mm.
The size of the charger is intuitive.
In addition, the measured net weight of the charger is about 80g.
Using ChargeLAB POWER-Z KM003C, it is measured that the USB-C interface supports the charging protocols of FCP, SCP, AFC, QC3.0/5, PD3.0, PPS, DCP and Apple 2.4A.
PDO message shows that USB-C interface also has five groups of fixed voltage gears, namely 5V3A, 9V3A, 12V3A, 15V3A, 20V3.25A, and 3.3-21V3A, one group of PPS voltage gears.
Mingpu Optical Magnetic 65W Ultra thinGallium nitrideCharger disassembly
After seeing the unpacking and testing of the ultra-thin GaN charger of Mingpu Optics and Magnetics, we will disassemble it and have a look at the internal scheme and materials.
First, tear off the charger shell and take out the internal PCBA module, which is filled and fixed with hard glue.
The PCBA module is equipped with brass heat sink and is insulated with high-temperature tape.
NTC thermistor is set at one side of USB-C interface to detect the internal temperature rise of the charger.
Paste insulating tape on the back of the folding pin.
The folding pin is integrated with the shell.
The overall length of PCBA module measured with vernier caliper is about 81mm.
The width of PCBA module is about 40.1mm.
The thickness of PCBA module is about 10mm.
Remove the cooling copper sheet covered by the transformer core.
Clean the potting compound of PCBA module, continue disassembly and observe the component information.
High voltage filter capacitors are set on both sides of the folding pin to make full use of space and reduce thickness.
The magnetic core of the plane transformer shall be insulated with adhesive tape.
The fold pin is connected to the PCBA module by welding.
Weld and remove the folding pin.
Then remove the plastic isolation plate between the secondary of the transformer core.
PCBA module is composed of two layers of PCB welded and connected by copper column.
The transformer secondary is connected by copper column welding.
On the plane transformer, the number of plate layers is marked as 8, and the corresponding coil turn ratio is 24:4:8.
Weld and disassemble the connection between the planar transformer and the charger PCB.
Through the observation of PCBA module, it is found that Mingpu Optics and Magnets 65W ultra-thin gallium nitride charger adopts Dongke sealed gallium nitride scheme, uses DK065G sealed gallium nitride chip with DK5V100R10V synchronous rectification chip, and has a wide range of voltage output.The output voltage is fed back by Yingjixin IP2723T protocol chip through optocoupler.Now let's start from the input to understand the design and materials of the entire charger.
The charger PCB is a frame structure with AC input terminal at the bottom, welding fuse, safety gauge X2 capacitor, common mode inductance and differential mode inductance.The top is welded with the USB-C bus base, the filter solid capacitors on both sides have been removed, and the patch Y capacitors are welded on the right side.
The bottom of the back is welded with a rectifier bridge, the left side of the top is welded with a protocol chip, the right side is welded with a synchronous rectifier chip, and the middle position is a synchronous rectifier tube.
The input end patch fuse is from Beite Electronics, and the specification is 3.15A.
The safety gauge X2 capacitor is from STE Matata Electronics, and the specification is 0.22 μ F.
Close up of SMD common mode inductance.
The rectifier bridge is from Shenzhen Walde Industrial Co., Ltd., model WRLSB80M. This soft bridge can reduce the diode junction capacitance to achieve the effect of very little harmonic oscillation through a relatively soft recovery curve and a relatively smooth turn off characteristic.The selected LSB package has good heat dissipation characteristics, which helps improve the reliability of medium and large wattage adapters. A single LSB can be used as 60W+.
Two high-voltage filter capacitors are from Kaizexin, with the specification of 33 μ F400V.
Close up of 68 μ H differential mode inductance.
The GaN sealing chip is welded on the small plane transformer board.
Weld the current sampling resistor and diode on the back of the small board.
The primary side of the charger adopts the sealed GaN series product DK065G of Dongke Semiconductor.It is internally integrated with 650V/260m Ω GaN power tube, and integrated with control and drive circuit chips.DK065G adopts the patented valley locked QR algorithm. While reducing the opening loss and improving the system efficiency, the stable valley locked algorithm avoids the introduction of audio noise, greatly simplifying the design of high power density flyback power supply.DK065G has perfect protection functions, supporting output overvoltage protection, power supply overvoltage, undervoltage protection, overheating protection and other protection functions.
Dongke DK065G is packaged with DFN8 * 8, and its peripheral components are simple. It is suitable for high power density fast charging adapters, notebook power adapters and other applications.
Close up of the Y capacitor of the patch, with two connected in series to improve safety.
Yiguang EL1018 optocoupler is used for output voltage feedback regulation.
The synchronous rectification chip is from Dongke Semiconductor, model DK5V100R10V, which is a synchronous rectification chip without periphery.The chip has built-in 100V voltage withstand and 10m Ω resistance synchronous rectifier tube, which can greatly reduce the conduction loss of traditional Schottky diodes, directly replace Schottky diodes, improve the power conversion efficiency and improve EMI.
Dongke Semiconductor DK5V100R10V supports CCM/DCM/QR working mode, built-in intelligent detection, and no synchronous signal is required.The chip has self power supply technology and no peripheral components are required. It is suitable for USB PD fast charging, power adapter and LED driving power supply, and is packaged with SM-7.
Dongke Semiconductor DK5V100R10V data information.
The output filter capacitor is from PolyCap Brilliant, which is a RN series miniaturized solid capacitor with a specification of 220 μ F25V.
The protocol chip adopts Yingjixin IP2723T, which has passed the USB IF Association PD3.0 PPS certification, TID: 3135. It is a fast charging protocol IC integrating multiple protocols and used for USB output ports.It supports a variety of fast charging protocols, including USB TypeC DFP, PD2.0/3.0, PPS, HVDCP QC4, QC4+, QC3.0/2.0, FCP, SCP, AFC, MTK PE+2.0/1.1, Apple 2.4A, BC1.2, and Samsung 2.0A.
Yingjixin IP2723T can provide a complete TYPE-C solution for unidirectional output applications such as adapters and car chargers.In addition, IP2723T has a high degree of integration and rich functions, requiring only a few peripheral devices in application, effectively reducing the size of the overall scheme and reducing BOM costs.
VBUS switch tube is from Zhenmaojia, with model ZM094N03M, NMOS, withstand voltage of 30V, conductivity of 9.4m Ω and DFN3 * 3 packaging.
The USB-C mother seat is fixed by via welding, with black tongue.
Take a look at all of them and have a family photo.
Disassembly summary of charging head network
Finally, a list of core components of Mingpu Optics and Magnets 65W GaN charger is attached for your reference.
The 65W GaN charger of Mingpu Optics and Magnets adopts the popular ultra-thin design. The charger is equipped with a planar transformer and a pen shaped capacitor. It is very convenient to carry with folded pins.The charger is designed with a single USB-C interface, and its output supports 65W PD fast charging and PPS fast charging, as well as the mainstream brand Android mobile phone fast charging protocol, which can meet the fast charging needs of laptops, Android mobile phones and tablets.
The charging head network learned through disassembly that this charger uses DK065G GaN sealing chip of Dongke Semiconductor with DK5V100R10V synchronous rectification chip, and adopts Yingjixin IP2723T protocol chip.The internal high-voltage filter capacitor of the charger is from Kaizexin, and the output filter capacitor is from Brilliant.The PCBA module is filled with thermal conductive adhesive, which improves the heat dissipation performance and mechanical strength. The internal design and materials are very reliable.