Speaking of world-renowned brands, Philips is naturally indispensable, and I believe that many consumers are familiar with this brand. Philips has a high market share in the consumer sector with products such as displays, shavers, lighting products and other small household appliances.
Charging head network got a Philips 20W 1A1C dual-port fast charge charger DLP4326C, this charger USB-C interface supports 20W fast charging, USB-A interface supports 18W fast charging, for mainstream mobile phones have good fast charging compatibility. Let's take this charger apart and see how it's designed inside.
The Philips 20W charger unboxes
The overall box is light blue tone, and the front is printed with the PHILIPS brand, charger exterior map and selling point logo.
The product parameter information is printed on the back and has passed CE certification.
The package contains a charger and user manual.
The charger adopts a WHITE SHELL MADE OF PC MATERIAL, THE SURFACE IS FROSTED, THE OUTPUT EDGE IS RETRACTED AND TILTED DESIGN, AND THE WAIST SIDE IS DESIGNED WITH THE PHILIPS BRAND LOGO.
The other side is printed with charger parameters
Model: DLP4326C
Input: 100-240V~ 50/60Hz 0.4A
USB-C输出：5V3A、9V2.22A、12V1.67A
USB-A output: 5V3A, 9V2A, 12V1.5A
A+C output: 5V3A
The input is straight and fits well with the wall plug.
The charger is equipped with foldable US-gauge feet for easy carrying on the go.
The top is equipped with a 1A1C connector with orange and black cores.
The measured charger body height was 45.03mm.
The width is 42.67mm.
The thickness is 29.66mm.
The USB-A port was measured using the Chargelab POWER-Z KT002 to support Apple 2.4A, Samsung 5V2A, DCP protocol, and QC2.0/3.0, AFC, FCP, and SCP fast charging protocols.
In addition, the C port supports QC3.0, AFC, FCP, SCP, and PD3.0 fast charging protocols.
And with 5V3A, 9V2.22A, 12V1.67A three sets of fixed voltage gears.
Philips 20W charger disassembled
After having a basic understanding of Philips' dual-port fast charger, the following continues to disassemble it in detail to see how the actual workmanship material of the product is.
First, the charger is disassembled along the pin side seam, and the folding pin is soldered with wires to the internal PCB module.
The input wires are soldered.
The charger adopts a combination of a large PCB and a vertical protocol platelet soldering, and there is an isolation board insulation between the transformer and the secondary components, and it is fixed with glue.
The circuit board is slotted through the isolation board insulation, and the primary stage adopts an integrated chip, and the circuit components are streamlined.
The length of the PCB containing folding pins was measured to be 40mm.
The width of the measured PCB is 35mm.
After giving a general idea of the size and layout of this 20W charger, let's start to learn more about the various devices on the board.
Input delay fuse with a specification of 2A 250V.
The rectifier bridge adopts THE WRAPS20M of Shenzhen Wald Industrial Co., Ltd. WRABS20M average forward rectifier current 2A, reverse withstand voltage 1000V. This soft bridge can reduce the diode junction capacitance to achieve very little harmonic oscillation through a softer recovery curve and smoother shutdown characteristics.
Wald WRABS20M specs.
The charging head network learned that the soft bridge of this model has been used by 20W mini chargers of brands such as Bunkers, Jindianbao, Instant, Zhengtuo, Bess, Ruigao, and Maddor. At the same time, the Wald soft bridge series products have also been adopted by OPPO 50W biscuit gallium nitride fast charge, Nubia 1A1C 45W deuterium gallium nitride fast charge, Locke 65W gallium nitride PD fast charge, Maddodo 2C1A 65W gallium nitride fast charge and dozens of other products.
The primary filter capacitors are sunvika's three best brands, and the specifications are all 15μF 400V.
Switching power supply primary adopts an integrated chip, silk screen printing C5818FZ, the chip has built-in switch tube and driver, high integration, simple peripheral components, very suitable for small volume fast charger use.
Blue Y capacitance close-up, 222M.
The synchronous rectification chip adopts JW77186B, which integrates a 60V 13mΩ synchronous rectifier tube, which supports CCM, DCM, quasi-resonant operation mode, and supports 18W and 20W fast charging applications.
The output filter capacitor is from Huarong Weiye and has a specification of 16V 680μF.
OR 357 optocoupler for feedback regulation of the output voltage.
USB PD protocol chip soldered on the vertical small board, INJOINIC INJI CORE 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 and other protocols. 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.
Injexin IP2726 protocol chip details.
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 vertical plate also features an R010 current sampling resistor for output current sensing and an 8205A MOS tube for output VBUS control.
Close-up of the output VBUS switch tube, model 8205A.
All disassembled, let's take a family portrait.
Charging head net disassembly summary
Philips' 20W charger features a white casing and folding prongs for home and travel. Dual-port output supports fast charging, USB-C port supports 20W fast charging, which can meet the fast charging needs of Apple mobile phones, USB-A port supports 18W QC fast charging, and can also meet the charging needs of commonly used mobile phones and mobile power supplies.
Through disassembly, the charging head network found that the Philips 20W charger adopts a highly integrated fast charging source scheme inside, which significantly reduces the power supply volume and improves the power density. Synchronous rectifier chip uses JW77186B, the protocol chip adopts Yingji core IP2726, supports dual output, and filters solid capacitors from Huarong Weiye. The program has a high degree of integration, a concise external interface, and a solid and reliable internal workmanship.