Preface
To say that the current power supply interface of laptops, in addition to the widely used USB-C port, the rest is the traditional DC interface. The DC power interface has been used since the birth of laptops, and it is still used by high-power laptops today. This time, the charging head network has summarized a total of ten gallium nitride adapters from eight brands.
These GaN adapters have two 120W adapters with PFC+ flyback architecture depending on the output power, while the higher power adapters both use PFC+LLC resonant architecture for higher conversion efficiency. In addition, some adapters have built-in active rectification to replace the traditional rectifier bridge to further improve conversion efficiency and reduce heat generation. The following is a summary of the GaN adapters that have been disassembled by the charging head network to see how the design is different.
ALIENWARE ALIENWARE
Alien 240W GaN Power Adapter
Although the Alien 240W GaN power supply is traditional, it is smaller with the blessing of GaN Systems' GaN devices. The power supply itself has a grounding design, and the power cord can be replaced accordingly according to different regions, which is a great praise for many small partners. In addition, the power supply has also passed CCC, CP, NOM, KC, NYCE, EAC, UKCA, UL, PSE, CE, GS, TUV and other certifications, which shows its reliable quality.
Through the dismantling of the charging head network, it was learned that the power supply was developed by the large manufacturer LITE-ON based on the PFC+LLC power supply architecture, but the input terminal was added to NXP's TEA2208T with Infineon's MOS solution for active bridge rectification, replacing the traditional rectifier bridge to reduce losses and improve efficiency.
The LLC switching power supply adopts a LTA1902T+LTA1716 customized control scheme, with GaN Systems GS-065-030-2-L gallium nitride device for PFC boosting, two Infineon IPL60R180P6 high-voltage switching MOS transistors, and two Infineon BSC028N06NS for LLC synchronous rectification. The OB2613 acts as a memory to realize the power identification and secondary over-current and over-voltage protection functions of the power supply.
In general, the overall material workmanship of the power supply is quite excellent, which is worthy of the good reputation of aliens all the time. The adoption of GaN Systems' GaN devices is also a testament to the manufacturer's recognition of the performance and quality of its chips.
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ANSHU安述
Anshu 240W GaN + SiC power adapter
With the blessing of gallium nitride + silicon carbide black technology, the body size of this 240W power adapter is 103*72*29mm, which is enough to match many current 100W fast charging chargers. In addition, it is equipped with folding pins and a 1.7-meter output cable, which eliminates the need for an input power cable, further improving portability. Because it is a special interface, it is necessary to correspond to the brand and model of the computer when purchasing, and the special model is dedicated.
Through the dismantling of the charging head network, it was learned that the charger adopts NXP's TEA2016AAT+TEA2095 highly integrated LLC switching power supply solution, with four Innoscience INN650D02 gallium nitride power tubes, MPSEN MSM06065G1 silicon carbide diodes, gallium nitride and silicon carbide double blessings, and the efficiency is guaranteed. The output synchronous rectifier tube adopts Guanyu KS6205NAT. In addition, it is also thanks to this, as well as the use of Yongming's small volume fast charging capacity, that a 240W high-power power adapter can be made so small.
Tips: This charger is sold in China, but it uses American plugs, and there is no 3C certification, please carefully identify or communicate with the manufacturer when purchasing.
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ASUS ASUS
ASUS 300W GaN Power Adapter
This 300W power adapter has a pure white shell, the main body is flat and square, two-stage structure, sharp edges and corners, and the output comes with a fixed output cable, and the input uses a plum triangle interface. Thanks to the internal application of gallium nitride power devices, and the use of high-performance power architecture and compact layout, the volume of this power supply is very small compared to the power of 300W, which is only about half the volume of a conventional 300W power supply.
The NVIDIA 300W power adapter is based on the PFC+LLC power architecture, but a new solution is adopted in the PFC boost part. The rectifier bridge adopts Infineon's MOS transistor with driver, and is controlled by MPS MP6924 for active bridge rectification, which replaces the traditional rectifier bridge to reduce losses and improve efficiency. onsemi NCP1632 performs a two-phase interleaved PFC boost, and the two PFC switches are nano gallium nitride power ICs and two Weenol silicon carbide diodes are used for rectification. The use of two-phase PFCs in high-power applications can significantly reduce peak currents and reduce component size.
The LLC controller is an onsemi NCP13992, and the switch is also Navitas NV6127. The synchronous rectification controller uses two independent NCP43080 to drive Infineon's MOS tubes. And the built-in Maxim MAX31826 is used for internal temperature detection of the power supply and uploads the report to the computer, and the computer dynamically adjusts the input power according to the temperature reported by the power supply. The power supply is soldered with multiple small plates, making full use of the PCB area, and the internal components are compact, which can be regarded as a model of extreme high power density power supply design.
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FJ Fujia
Fujia 120W GaN power adapter
The Fujia 120W GaN Power Adapter is designed with its own output cable, which is convenient for connecting devices. The power supply adopts the word interface, and the power cord of different lengths can be selected according to the distance. There is no need to use the socket extension, and it is clean and tidy. The output specification of the power adapter is 24V5A, and the output power is 120W. And equipped with a power indicator, you can know the power status at all times.
Through the dismantling of the charging head network, it was learned that Fujia's gallium nitride power adapter adopts PFC+ flyback architecture, and the PFC uses Ambo OB6566 controller with Innoscience INN650D260A gallium nitride switch and MPSEN MSM06065G1 silicon carbide diode. The flyback adopts Dongke DK065G gallium nitride encapsulated chip with fixed voltage output. The output is controlled by DIODES AP4320 for constant voltage and constant current.
The PCBA module inside the power supply is wrapped with a large-area aluminum heat sink, the rectifier bridge is equipped with a heat sink, and the corresponding transformer and heating device are pasted with thermal pads to strengthen heat dissipation and effectively reduce the temperature rise. The workmanship and materials are very solid to meet the needs of long-term high-power output.
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Fujia 240W GaN power adapter
This power adapter from Fujia is designed with replaceable cables, which is convenient for connecting power cords of different lengths and is more tidy. The adapter comes with a 1-meter output cable with an output specification of 24V10A, which can be used with an outdoor power station to charge or power computers and other devices. The adapter has a built-in GaN device, which is significantly smaller than traditional power supplies.
Through the dismantling of the charging head network, it was learned that this power adapter adopts PFC+LLC+SR architecture inside, and NXP TEA2017 is used for PFC and LLC control. Among them, the PFC boost switch uses Innoscience INN650D150A gallium nitride devices, the LLC switch uses INN650D02 gallium nitride devices, and the silicon carbide diode is from MPSEN.
The PCBA module inside the power supply is wrapped with an aluminum heat sink to evenly dissipate heat, and the heating devices corresponding to the PCBA module are pasted with thermal pads to strengthen heat dissipation and effectively reduce the temperature rise. Thanks to GaN technology, the size and heat generation of the adapter are well controlled, bringing consumers a more portable high-power switching power supply.
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Happy use of the times
Leyong Times 120W GaN power adapter
This DC power adapter from Leyong Times has a black exterior with fixed pins and fixed output cables. The nominal output power is 120W, the output specification is 24V5A, and the length of the output cable is 1.5 meters. The AC input supports a global wide voltage input of 100-240V, has a six-level energy efficiency mark, and has passed the CQC certification.
Through the dismantling of the charging head network, it was learned that the chips of this adapter are all from Nanxin Technology, using SC3202 PFC controller, SC3201 flyback controller and SC3503 synchronous rectifier controller. Both the PFC and flyback switches are from Innoscience and are INN650D150A and INN650D260A. The internal high-voltage capacitors and output filter capacitors are all from Emerald, and the PCBA inside the adapter is potted with thermally conductive adhesive to enhance heat dissipation performance and improve strength, and the internal materials and workmanship are very good.
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PANFORE Wide
Wide number of 130W GaN power adapters
Guangshu This power adapter has an output power of 130W, an output specification of 20V6.5A, and a 1.2-meter DC output cable. The adapter is designed with folding pins for easy carrying and storage. The adapter supports a wide voltage input of 100-240V, which can meet the power supply of mini hosts and laptops with DC power supply interface.
Through the dismantling of the charging head network, it is learned that the power adapter of Guangshu adopts PFC+LLC+SR architecture, adopts NXP's TEA2016+TEA1995 power supply scheme, PFC switch adopts gallium future G1N65R240PB gallium nitride switch, LLC switch adopts Infineon IPD60R360P7S, and synchronous rectifier adopts core control source AGM6014A. The high-voltage capacitor comes from Black King Kong, the output is filtered by solid-state capacitors, the PCBA module is dissipated by aluminum sheets, and the internal workmanship and materials are very good.
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Razer
Razer Blade 280W GaN Power Adapter
Razer's 280W power adapter is significantly smaller than traditional power supplies, reflecting the performance improvement brought by GaN devices. The power adapter has a special plug and is designed with braided wire for durability. The design of the indicator light can be easily understood about the power-on status of the power supply.
Through the dismantling of the charging head network, it was learned that the adapter of Razer adopts the PFC+LLC architecture customized by Continental for it, and the internal PFC+LLC control is carried out by NXP NXP TEA2017AAT. Among them, the PFC boost switch adopts GaN Systems' GS-065-030-2-L enhanced gallium nitride device, two in parallel, the silicon carbide diode is from Fuying, and the LLC switch is made of Dongwei OSS60R190JF.
The synchronous rectification consists of a TEA2095 with two Infineon BSC028N06NS, and the output is filtered by the long-life capacitors of the Berry Cayage RF series. The PCBA module inside the adapter is wrapped with copper sheets for heat dissipation, and the internal heating elements are glued to dissipate heat through the heat sinks, effectively reducing the temperature rise. Thanks to the GaN, the adapter is compact and well-controlled, providing consumers with a portable, high-power power solution.
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SAVAGO尚巡
Somxun 120W GaN power adapter
The 120W fast-charging GaN charger has a unique design and comes with a 1.7-meter-long round-head output cable, which is rare for a GaN charger and is friendly to devices that are still using the DC round port for power, and older devices can also enjoy an efficient fast charging experience.
Through the dismantling of the charging head network, it was found that this charger has a built-in PFC power factor correction circuit and adopts LLC+SR high-performance architecture. With NXP's TEA2016AAT+TEA1995 solution as the core, it is equipped with Innoscience's GaN power IC and Gufeng MOS transistor to form the switching power supply part, which improves efficiency and power density, and the performance is significantly better than that of conventional flyback solutions.
Although it is rare to have a round output cable, this charger also reserves enough space on the secondary side, and can design different types of multi-port PD fast charging chargers according to customer needs at any time, which is very flexible.
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Centcruiser 230W GaN Power Adapter
For the traditional gaming power supply,Large bricks have always been the inherent impression it leaves to users,Although it can meet the power consumption of the gaming laptop,But the volume of the product is really a little unacceptable,Especially when you go out,It's very inconvenient。 While ensuring performance, the volume of the 230W GaN power adapter has been greatly optimized, and the power density of the whole machine has reached 0.92W/cm³, which improves the portability of power accessories.
In terms of performance, the Shangxun 230W gallium nitride charger adopts the high-performance architecture of PFC+LLC, supports 100-240V wide voltage input, fixed 20V voltage output, and the nominal maximum output current can reach 11.5A, which can meet the charging needs of Lenovo Legion Y7000P and other gaming laptops, and has obtained CCC certification and reliable quality.
In terms of materials, NXP TEA2016AAT+TEA2095 complete controller solution is selected, with high chip integration, simple peripheral circuits, and four Innoscience GaN switches and one Maximson silicon carbide diode are built-in to improve the performance of the whole machine.
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Summary of the charging head network
Compared with traditional silicon devices, GaN has higher switching frequency, lower switching losses, supports higher switching frequencies, and can reduce the size of transformer cores. The low switching loss reduces the heat dissipation requirements of the adapter, eliminating the need for a large heatsink and ensuring full power operation for long periods of time.
The DC adapters used in laptops are all fixed voltage outputs, which are more suitable for LLC resonant architecture applications, and the use of gallium nitride devices in the adapter significantly reduces the size of the adapter and reduces the carrying weight. It can also reduce the need for heat dissipation, and the long-term high-power output is more stable and reliable.