Recently, the charging head network got a mini 30W gallium nitride charger for JSAUX, which may be a little strange to this brand for people, but a 20W PD Mini fast charger of the brand has been personally recommended by Teacher Luo, and presumably the 30W charger has also done a good job.
This charger is very small, supports a number of mainstream fast charging protocols on the market, and also supports PPS fast charging, the maximum output power is 30W, and the performance is also good. The following charging head network will disassemble this charger in detail to see how the specific materials of the product work.
First, a few mini 30W gallium nitride fast charging appearance
The front of the box is printed with the JSAUX brand, charger exterior, name and selling points.
The back is printed with the charger usage scenario and parameter information.
Close-up of charger parameters.
The package contains a charger and instruction manual.
The charger adopts a white shell made of PC material, the waist is frosted, the top surface is bright, and the edges are right angles and arc transition designs, which are very recognizable.
The side of the fuselage is printed with the JSAUX brand.
The input terminal is equipped with foldable GB pins, which are easy to carry and will not scratch the equipment in the bag.
Charger parameters are marked on the input housing
Product Name: PD30W Mini Charger
Model: JS-CH-3001
输入：100-240V~50/60Hz 0.7A Max
输出：5V3A、9V3A、12V2.5A、15V2A、20V1.5A（PPS：30W Max）
Manufacturer: Shenzhen Unconscious Technology Co., Ltd
The product has passed the CCC certification.
The top surface is equipped with a single USB-C interface, the orange rubber core does not expose copper, and the iOA (intelligent output adjustment intelligent output adjustment) logo is next to the interface.
The measured charger body height was 41.44mm.
The width is 32.07mm.
The thickness is 31.41mm.
Compared with the Apple 30W charger, it is also equipped with foldable feet, which has a great advantage in size.
Intuitive feeling in the hand.
The net weight of the charger is about 53g.
The USB-C port is measured by using the Chargelab POWER-Z KT002 to support QC2.0/3.0, AFC, FCP, SCP, PD3.0, PPS fast charging protocol.
In addition, it also has five fixed voltage levels of 5V3A, 9V3A, 12V2.5A, 15V2A, 20V1.5A, and a set of PPS voltage levels of 3.3-11V3A.
Using this charger to charge the Xiaomi Mi 11 Pro, the power is about 8.37V 3A 25.16W, successfully triggering a 27W fast charge.
In addition, it is used to charge the Samsung S20 Ultra 5G mobile phone, the power is about 8.89V 3.14A 27.96W, and the PPS fast charge is successfully triggered.
Second, a few mini 30W gallium nitride fast charge disassembly
Detach the input housing and secure the pins in a plastic sheet and screw package.
Remove the charger module and attach an insulating tape to the inside of the housing.
The connection wire at the input end is glued and reinforced, and the two high-voltage filter electrolytic capacitor sleeves on the side are reinforced with plastic shells.
The main control chip of the switching power supply is provided on the connection small board, so the thermal pad is attached to help dissipate heat.
The solid capacitors at the output are also covered with a black plastic shell and reinforced with glue.
The measured module length is 27.3mm.
The width is 26.94mm.
The thickness is 25.64mm.
The module adopts a three-piece small board stacking design, and through observation, it is found that this charger uses the QR switching power supply architecture, and the protocol chip controls the output voltage of the interface. Let's start with the inputs to learn more about each device.
A smd fuse is provided on the back of the input panel, which is cutout at the corresponding common-mode inductor to reduce the thickness.
Patch fuse close-up.
Common mode inductor two-wire winding, immersion plate design reduces thickness for filtering out EMI interference.
Four diodes are used to form a bridge rectifier.
Input and output filter capacitors are provided on one side of the module.
On the other side, there is a PI main control chip on the connecting board.
In the middle is a transformer, tightly wrapped in tape insulation and reinforced with glue.
Split the module and have a filter inductor on the front of the input board in addition to the electrolytic capacitor and transformer.
A high-voltage filter electrolytic capacitor adopts Yongming KCX series, which has the operating temperature range of -55 °C ~ 105 °C, 3000 hours of life, and has the performance advantages of lightning resistance, low leakage current (low standby power consumption), high ripple current, high frequency and low impedance.
The specification is 400V 33μF.
The other capacitor is from AiSHi Aihua.
The specification is 400V 22μF.
Filter inductor close-up.
Switching power supply main control chip using PI INN3378C, belongs to the InnoSwitch3-Pro family, using PI's exclusive PowiGaN technology, built-in PWM controller, gallium nitride power devices and synchronous rectifier controller, ultra-high integration, wide voltage range conditions, closed shell can output 55W power, derating use.
Transformer close-up.
Two chip Y capacitors are connected in series.
The back of the output panel is provided with a synchronous rectifier, a protocol chip, and an output VBUS switch.
When the board is removed, you can see that there is a solid capacitor and a USB-C mother on the front.
Synchronous rectifier MOS tubes are available in AOS Bandai AONS62922, NMOS, 120V, DFN5x6 package.
Output filtered solid capacitor close-up with 25V 680μF.
The protocol chip adopts Injixin IP2726, which is a fast charging IC that integrates multiple protocols for USB output ports, supporting Type-C DFP, PD2.0/3.0, PPS, QC4+, QC2.0/3.0, FCP, AFC, SCP, MTK PE+, Apple2.4A, BC1.2 and Samsung 2A. With high integration and rich functions, it requires very few peripheral devices in the application, effectively reducing the size of the overall solution and reducing the BOM cost.
The charging head network learned that the Inji core IP2726 has passed the Qualcomm QC4+ certification and obtained the first QC4+ certification certificate Chinese mainland.
Charging head network learned that Yingjixin IP2726 has previously been adopted by AUKEY 65W 1A1C Gallium Nitride Fast Charge Charger, RAVPOWER 90W Dual USB-C Port PD Fast Charge Charger, Stec 100W Dual USB-C Port Gallium Nitride Charger, Maddor 30W 1A1C USB PD Fast Charge Charger, Kunxing 18W USB PD3.0 PPS Fast Charge Charger and other products. In addition, other series of fast charging chips of Yingjixin have also been highly recognized by customers such as Xiaomi, Huawei, and Samsung.
The output VBUS switch is available in the AOS AON7544, withstand voltage 30V, DFN3x3 EP package.
USB-C female close-up, via welding.
All disassembled, let's take a family portrait.
Charging head net disassembly summary
JSAUX's 30W Gallium Nitride charger continues the same design as the previously disassembled 20W charger, which is very recognizable. The charger is blessed with the blessing of gallium nitride black technology, the overall is very small, plus equipped with foldable feet, easy to carry out. Support QC, AFC, FCP, SCP, PD3.0, PPS mainstream fast charging protocol, with 5-20V complete voltage gear, but also has a set of 3.3-11V3A PPS voltage gear, to meet apple (iPhone 12/13), Millet, Samsung and other big brand mobile phone fast charging needs.
Through disassembly, the charging head network found that the charger adopts a combination structure of three PCB boards, the PI INN3378C main control chip, the MOS tube of AOS and the IP2726 protocol IC of Yingji core. Yongming, Aihua two major brand capacitors for filtering, the service life is guaranteed. Through disassembly, it has also been proved that this is indeed a Gallium nitride charger, and the overall material workmanship is very reliable.