The charging head network got a 65W gallium nitride charger launched by Pinsheng, this charger is designed with a white columnar body and is equipped with folding pins for easy daily carrying and storage. The charger has 65W output power and has a 2C1A fast charging interface that supports automatic power distribution, which can meet the simultaneous charging needs of laptops and mobile phones.
Both USB-C ports of this charger support 65W output power, support power blind plugging, and USB-A port supports 225W fast charging, support three devices to charge at the same time, practical functions. Let's bring the disassembly of Pinsheng's 65W gallium nitride charger, and take a look at the internal materials and design.
The design style of the packaging box remains unchanged, with the PISEN brand, product appearance and name printed on the front, in addition to fast charging, 65W, PD30. The three major selling points of SAFE are highlighted in gold.
The back is printed with a description of the product's selling points, parameters, and business information.
Close-up of the parameters on the packaging box, and then introduce it to the physical link of the product.
The charger and product warranty card are included in the package.
The charger adopts the mainstream columnar design, and the white shell indicates that the main frosted process is treated, and the overall appearance design is relatively decent.
The waist side is printed with the word PISEN PRO.
The other side is printed with 65W GaN, indicating that this is a 65W GaN charger.
The input housing is printed with the detailed parameters of the charger.
Model: FYD-DQ-18
Input: 200-240V-50 60Hz 20a max
Output: USB-C1 C2: 5V3A, 9V3A, 12V3A, 15V3A, 20V325a 65w max
usb-a：5v3a、9v2a、10v2.25a、12v1.5a 22.5w
c1+c2：45w+20w 65w max
c1+usb-a：45w+18w 63w max
c2+usb-a：15w max
c1+c2+usb-a：45w+15w 60w max
Max Power: 65W Max
Manufacturer: Dongguan Deqi Electronic Technology ***
The charger is CCC certified.
The charger is equipped with foldable national standard prongs, which is easy to store and carry.
The other end is equipped with 2C1A three USB interfaces, the interface rubber core is classic yellow color, and the corresponding distinguishing logo is printed next to the interface for easy use.
The measured length of the charger body is 7064mm。
The width is 3401mm。
The thickness is 3922mm。
Compared with Apple's 61W charger, Pinsheng's charger has obvious advantages in size.
Feel the size of the charger in your hand.
In addition, the weight of the charger was measured to be about 116g.
The USB-C1 port is measured by ChargerLab Power-Z KM003C and supports FCP, SCP, AFC, QC20/4+、pd3.0、pps、dcp、apple 2.4A charging protocol.
PDO packets show that the USB-C1 port also has 5V3A, 9V3A, 12V3A, 15V3A, and 20V325A five sets of fixed voltage ranges, and 33-11V5A set of PPS voltage ranges.
The output protocol of the USB-C2 port is the same as that of the USB-C1 port.
In addition, the PDO packets are also the same, that is, the single-port output performance of the two USB-C ports is the same, and the power is supported blind plugging, which is convenient for daily use.
Finally, it was measured that the USB-A port supports FCP, SCP, AFC, QC30、dcp、apple 2.4A charging protocol.
After reading the unboxing and testing of Pinsheng's gallium nitride charger, let's disassemble it and take a look at the internal design and materials.
First, pry the charger shell along the seam of the housing, and the internal PCBA module is connected to the PCBA module for power supply through shrapnel and wire welding.
The input wire is glued and reinforced.
Folding pin module soldered wire connection.
Thermal pads are pasted on top and bottom of the PCBA module to enhance heat dissipation.
The PCBA module is extracted from the inside of the housing, and a slotted fixing is arranged inside the housing.
The input end of the PCBA module is welded with an EMI filter board.
The output end is welded with a secondary step-down small plate, and the inductor is glued to strengthen the heat dissipation.
Attach a heat sink to the thermal pad on the back of the PCBA module.
The length of the PCBA module measured by vernier calipers is about 674mm。
The width of the PCBA module is about 347mm。
The thickness of the PCBA module is about 287mm。
The front of the PCBA module is at a glance, the lower left corner is welded to the input EMI circuit board, the upper left side is welded with a high-voltage filter capacitor and a differential mode inductor, the right side is welded with an SOC power module, and the right is an output step-down board.
Since this charger uses an SoC power module, only a rectifier bridge is soldered on the back of the PCBA module, and the components are very simple. The position of the corresponding module component is hollowed out to reduce the thickness.
Through the observation of the PCBA module, it is found that this charger adopts a switching power supply module with a skip function, and the output voltage of the module is 15 in two gears6V, 21V, automatically adjust the output voltage of the module according to the DC output condition. With an automatic step-down and jumper function, the efficiency of the output port at low pressure is improved and heat generation is reduced.
The output is through two independent synchronous step-down circuits to realize the three-port fast charging output and automatic power distribution function. Let's start with the input to understand the design and materials of this charger.
The input terminal of the PCBA module is at a glance, two filter capacitors are welded on the left side, and a small board is vertically welded on the right side, and the fuse and safety X2 capacitor and common mode inductor are welded.
The side of the PCBA module is at a glance, with the input board on the left, the power module in the middle, and the output buck and protocol board on the right.
Soldering to remove the input plate.
There are no elements on the back of the small plate.
The input fuse specification is 315a 250v。
NTC thermistor silk screen 3D-7 is used to suppress the inrush current when the charger is powered up.
The safety X2 capacitor is from JURC and has a specification of 01μf。
Common mode inductors are wound with enameled and insulated wires.
The input rectifier bridge WRLSB80M comes from Shenzhen World Industry*** This soft bridge can reduce the diode junction capacitance to achieve very little harmonic oscillation through a soft recovery curve and smooth turn-off characteristics. The selected LSB package has good heat dissipation characteristics, which helps the medium and large wattage adapter improve reliability, and a single adapter can be 60W+.
Wald WRLSB80M Fact Sheet.
According to the dismantling of the charging head network, Wald's soft bridge has also been used in a variety of fast charging products such as Momis 100W 2A2C GaN fast charging, Nubia 1A1C 45W Deuterium Front GaN fast charger, Bull 65W PD fast charging socket, Maiduoduo 2C1A 65W GaN charger, Hongdashun 65W GaN charger, OPPO 50W biscuit GaN fast charging, Rock 65W GaN charger and other fast charging products, and the product performance has been unanimously recognized by customers.
The side of the PCBA module is soldered with SMD Y capacitors, high-voltage filter capacitors and differential mode inductors.
The high-voltage filter capacitor is from Hongan, with a specification of 400V27 F, and two are connected in parallel.
There is also a high-voltage filter capacitor with the same specifications.
One high-voltage filter capacitor is 400 V39 F, and the total filter capacitor capacity is 120 F.
The differential mode inductor is wound with enameled wire and insulated by a heat shrinkable tube.
The SoC power module is connected to the PCBA module by soldering. The module comes from the sales side of Xinxian.
The power module is sealed by potting hard rubber, and the transformer and output filter capacitors are sealed inside.
The bottom PCBA module is welded with gallium nitride encapsulated chips, SMD Y capacitors, feedback optocouplers, and the right side is welded with synchronous rectifier controller and synchronous rectifier tube. From the logo on the PCBA module, it is understood that this power module comes from Zhongzheng Magnetic Energy, which is a highly integrated standardized product that meets the needs of any batch supply and has a short delivery time.
The GaN encapsulated chip from Morixin, model MKPD01CDG, is optimized for PD fast charging applications, the chip supports 9-85V working voltage, meeting the wide range of output of PD fast charging, without the need for additional power supply windings and step-down circuits. The MKPD01CDG integrates a 650V 165M GaN switch and adopts adaptive multi-mode control to improve conversion efficiency.
The MKPD01CDG has built-in comprehensive protection functions, including output over-voltage protection, over-power protection, VCC over-voltage protection, brown in out, synchronous rectifier short-circuit protection and current sampling resistor short-circuit protection. The chip adopts DFN6*8 package and supports 65W fast charging applications.
Mauris MKPD01CDG Profile Information.
SMD Y capacitors from Sichuan Teruixiang Technology Co., Ltd. have the characteristics of small size and light weight, which are very suitable for high-density power products such as gallium nitride fast charging. The part number is TMY1471K.
Teruixiang focuses on the research and development, production and sales of passive components, with a registered capital of 100 million yuan. It has two categories of independent capacitor brands: SMD TRX and DIP TY capacitors, TRX will be committed to the research of ceramic materials, in order to expand more categories of applications, to provide customers with more solutions.
The charging head network learned that in addition to being used by dozens of high-power chargers such as Baseus Qualcomm QC5 certified 100 gallium nitride fast charging, Maiduoduo 100W gallium nitride, OPPO 65W super flash charging gallium nitride charger, Lenovo 90W gallium nitride fast charging, Nubia 65W gallium nitride charger, Baseus 120W gallium nitride + silicon carbide PD fast charging charger, etc., can also be applied to 20W mini fast charging of brands such as Hailutong, First Guard, Belkin, etc., and the performance has been unanimously recognized by customers.
Everlight EL1018 optocoupler is used for output voltage feedback.
The synchronous rectifier tube comes from the core conduction, model PSM8N10R8D, NMOS, withstand voltage 100V, conduction resistance 55M in a PDFN5060-8L package.
The module is sealed with two filtered solid-state capacitors, both from Relon, both with a specification of 470 F25V.
A Teruixiang SMD Y capacitor is also soldered on the PCB, with the part number TMY1681M.
The output end is welded with a step-down protocol board.
The front of the buck protocol board is soldered with USB-C and USB-A receptacles, protocol chips, buck inductors and output filter capacitors.
Two synchronous buck converters, another protocol chip and three VBUS switches are soldered on the back.
The two synchronous step-down converters are from Toll Microelectronics, model TMI3351, the chip supports 32V input voltage, and adopts peak current control mode. The chip integrates an ultra-low conductivity MOS transistor, and the switching frequency supports 100kHz 1MHz adjustable and supports 995% duty cycle, integrated line loss compensation, and output over-current protection, output short-circuit protection, output over-voltage protection and over-temperature protection.
Two 4A 7 h alloy inductor is used for two output step-downs.
The output filter capacitor is from Reilon and is specified at 100 F25V.
The other filter capacitor has the same specifications.
The VBUS switch is from Astatine, model AD30N25D3, NMOS, withstand voltage 30V, and is available in a PDFN3333 package.
The VBUS switch is from Astatine Anderman, model AD30N25D3.
The two USB-C receptacles are fixed by via soldering, and the yellow rubber core does not expose copper.
The USB-A receptacle uses a yellow rubber core.
A list of all dismantling and a family photo.
Through the dismantling of the charging head network, it was learned that the core component of the GaN charger of Pinsheng uses the SoC power module launched by Zhongzheng Magnetic Energy, and is equipped with a step-down chip and a protocol chip for output. The modular design helps solve the pain points of rapid mass production and shortened lead time in factories, and helps customers establish an advantage in emerging markets.
The SoC power module is a complete set of Maurix fast charging power source solution, using the MKPD01CDG GaN encapsulated chip with the MK91808H synchronous rectifier controller, with high chip conversion efficiency, high integration, and simplified peripheral components, which is very suitable for GaN fast charging applications.
The internal electrolytic capacitor of the charger is from Hongan Electronics, and the output step-down converter is from Toll Microelectronics, using TMI3351. The DC protocol small board is fully SMD design, which makes the production extremely simple and fast.
This gallium nitride charger is designed with a white shell and a columnar body. The charger is equipped with national standard folding pins, which is easy to carry and store in daily life. In terms of output, the charger comes with a 2C1A port, with two USB-C ports supporting 65W PD fast charging and 33-11V5A PPS fast charging can well meet the fast charging needs of laptops and Android mobile phones.