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With the release of the new iPhone 12, major brands have entered the 20W PD fast charger market, and today continue to share with you the dismantling of Bull 20W USB PD fast charger. This charger uses a common flat long shape design, equipped with a USB-C interface, support QC, PD, AFC, FCP, Apple 2.4A and other charging protocols, compatibility is very good, can meet the needs of many brands of mobile phones, including the iPhone series. Let's take a look at its interior design work.
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First, Bull 20W fast charger appearance
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The packaging box is white and green, and the front is printed with the bull brand, charger name, appearance and characteristics.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The top of the box has a hook design to facilitate the product to be displayed and sold.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
Charger parameters and features are printed on the back.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
Open the box and use a plastic shell to fix and protect the charger inside.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
In addition to the charger, it also comes with an instruction manual.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The charger uses PC flame retardant material white shell, waist bright surface design, output top surface frosted treatment, charger Type-C output mouth light blue, add a touch of fresh.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The front center of the fuselage features the Bull brand logo.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
On the back is the 20W fast charge logo.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The input housing is marked with the charger parameter information and serial number.
Model: GNV-AUB201
Input: 100-240V to 50\/60HZ 0.6A
Output: 5V3A, 9V2.22A, 12V1.67A
The product has passed 3C certification.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
In addition, it is equipped with fixed national standard pins.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The center of the output top surface is equipped with a USB-C interface, and is decorated with a blue plastic ring, matching the color of the interface rubber core.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The length of the charger body measured by vernier caliper is 49.44mm.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The width is 40.9mm.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The thickness is 24.73mm.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
In direct contrast to the size of Apple's 20W charger, the Bull's body is slightly longer.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The thickness of the fuselage is the diameter of a dollar coin.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The intuitive feeling of holding it in your hand.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The net weight is about 50g.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
Use ChargerLAB Power-Z KT002 to read the output protocol of the USB-C port, and display support for Apple2.4A, Samsung 5V2A and DCP protocols, as well as QC2.0\/3.0, AFC, FCP, PD3.0 multiple fast charge protocols.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The PDO message shows that the USB-C port also has three sets of fixed voltage gears: 5V3A, 9V2.22A and 12V1.67A.
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Two, Bull 20W fast charger disassembly
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The input shell is disassembled, the pin is crimped with the metal shrapnel, and the metal shrapnel is connected with the PCB board.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The front of the PCB board is at a glance, the white isolation board is arranged between the first stage, the USB base is vertically welded using the protocol small board, and the Type-C interface sleeve has a light blue plastic sleeve.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
At a glance on the back of the PCB board, the charger main control chip spans between the primary stage, and the primary bracket PCB is hollowed out through the isolation board.
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Through the PCB circuit observation, it is found that Bull 20W USB PD fast charger adopts a typical PI integrated switching power supply scheme, the switching power supply outputs a wide range of voltage, and the output voltage is controlled by the protocol chip design architecture. From the input side, we will introduce the materials used in this product.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
Input side list.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
Close-up of the delay fuse, specification 2A 250V.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
Close-up of the NTC surge suppression resistor, which is used to suppress the upsurge current.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
Input RBS210 rectifier bridge.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
PCB board side view.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
I-inductor jacket heat shrink tube.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
Two high-voltage filter electrolytic capacitors from emeralds, specifications are 400V 18μF.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The other side of the PCB board is provided with the main control chip power supply capacitor and transformer.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The power supply capacitor of the main control chip is from Aihua, and the specification is 50V 4.7μF.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The charger main control chip adopts PI SC1548C, built-in flyback controller, primary switch tube, and secondary synchronous rectifier controller, in addition to the integrated feedback link with HIPOT isolation protection, the integration is very high. There is no need to match the optical coupling and synchronous rectifier controller when using, and multiple perfect protection functions are built in.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
Detailed specifications of PI SC1548C.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
Close-up of transformer with information label on top.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
At the output end, the USB female seat cover has a light blue plastic cover.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
Output anti-interference blue Y capacitor.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
Secondary synchronous rectifier tube, screen print 90N06, from China Resources Huajing.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
Output filter capacitor, emerald solid, 16V 680μF.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The front of the output end small plate is welded with USB base and output galvanometer resistance.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The back side is equipped with a protocol chip and an output VBUS switch tube.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
USB PD protocol IC from Hynetek, model HUSB339, this chip has passed the USB PD3.0 certification, TID 62. HUSB339 is a high-performance, highly integrated USB Type-C Power Delivery controller, which integrates PD2.0, PD3.0, PPS, QC2.0\/3.0, BC1.2, 5V2.4A and other charging protocols. Suitable for power adapter, car charger, mobile power and other applications; There are two package modes: SOP-14L and QFN-16L.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
Huinengtai HUSB339 information.
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Charging head network learned that, The HUSB339 chip is also SlimQ 65W Gallium nitride USB PD fast charger, Toulas 18W USB PD fast charger, Toulas 24W 1A1C fast charger, Toulas 30W 1A1C USB PD fast charger, Meisun and 30W USB PD fast charging appliance, Nanfu Aircharge 65W PD fast charging appliance, AA1C 65W PD fast charging appliance, belkin 30W USB PD fast charging car charger and other products, chip performance has been highly recognized by customers.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
The output VBUS switch adopts VS2508AE, PMOS, voltage 20V, 7.3mΩ conductive resistance.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
Vvs2508ae specification details.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
Close-up of USB-C base, through hole welding.
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Disassembly report: BULL Bull 20W USB PD fast charger GNV-AUB201- Charging head network
All disassembled. Let's get a family photo.
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Charging head network disassembly summary
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The packaging box of this product uses white and green color, the typical packaging style of bull, the charger shell uses a combination of bright face and frosted design, the front is printed with the brand logo, and the back is printed with 20W words, highlighting the brand and performance. Equipped with fixed pins, the interface is decorated with blue rubber rings, and the rubber core of the USB-C interface is also blue, which is designed as a whole, adding a fresh touch and improving recognition. The charger supports Apple2.4A, QC2.0\/3.0, AFC, FCP, PD3.0 multiple fast charge protocols, with wide compatibility and strong practicability.
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The disassembly of the charging head network found that the switching power supply part of the charger used PI SC1548C, which was highly integrated and simplified outside; Part of the protocol adopts the chip HUSB339, which is certified by the Association PD3.0, to control the output. In addition, the first-stage filter capacitors are all from emeralds, and the performance is reliable. The overall material work of the charger is at the mainstream level of the industry. And through the reasonable PCB design, the balance of portability and heat dissipation performance is achieved, and the user's experience is improved.