The full English name of VBUS is Voltage Bus. It is a signal line used to power USB devices in the interface defined by the USB standard, and can also be used for device insertion/removal detection. It usually provides 5V power supply.However, driven by the current PD and QC universal fast charging protocols and various private fast charging protocols such as Huawei, Xiaomi, OPPO and vivo, today's VBUS needs to withstand 20V or even PD3.1 140W 28V, which brings new difficulties to the selection of VBUS switches.
In order to achieve fast charging output above 100 watts, current capability, conduction resistance, switching speed, static power consumption, package size, cost and other factors should be considered when selecting VBUS switches.Suitable switch tube shall have sufficient current bearing capacity, low on resistance, fast switching speed, low static power consumption and smaller package size, aiming to achieve high power output in limited space.
2023 Application Case of 100W Mobile Power VBUS Switch Tube
When sorting out the previous disassembly cases, the charging head network learned that there are currently four hundred watt mobile power supplies with built-in withstand voltage 30V VBUS switch tubes to achieve single port hundred watt output.Some parameters of the four switches mentioned in the article are shown in the figure, and the detailed parameters will be introduced in detail below.
Astatine Deman AD30P47D3
Astatine Deman AD30P47D3 is a 30V PMOS with a resistance of 8m Ω and is packaged with PDFN3030.
Application case
Hayside 20000mAh 155W visual mobile power supply
Hayside mobile power supply with transparent shell not only uses color LCD screen for mobile power supply parameter display, but also uses transparent shell to observe the internal PCBA module, which is very scientific.The mobile power supply has a total output power of 155W, the USB-C1 interface supports 100W charging and discharging, the USB-C2 interface supports 11V5A PPS fast charging, and the USB-A interface also supports fast charging.
Huarui Micro HRT30N08J is a 30V withstand NMOS with a resistance of 7m Ω and is packaged with DFN3 * 3.
Application case
Romance 20000mAh 100W fast charging mobile power Sense6 Max
The 20000mAh mobile power supply of ROMES has a 2C2A interface, and two USB-C interfaces support 65W fast charge input and 100W fast charge output.The 188 digital tube power display is used to accurately display the battery percentage, so that the remaining power of the mobile power supply can be understood more intuitively.There are also touch buttons on the side for better use experience.
Paisidi PAN3050P is a 30V withstand NMOS with a conductivity of 3.2m Ω and is packaged with PDFN3 * 3.
Application case
Muri 30000mAh 100W four port fast charging mobile power supply
The Muri mobile power supply is equipped with a 30000 mAh super capacity battery and supports 100W power, which can meet the long-term power supply needs of notebook computers.The USB-A port also supports fast charging output and has good charging compatibility with traditional devices.It also supports the percentage display of power, which is more accurate for the remaining power.
The core cell PED3008M is a PMOS, with a withstand voltage of - 30V and a conductivity of 9m Ω. It is packaged with PDFN3.3 * 3.3-8L.
Application case
CUKTECH # 15 electric energy column SE
The 15 # electric energy column SE of Kutec has a 20000mAh battery, with a total output power of 100W. The USB-C1 interface supports 65W charging and 67W discharging, and the USB-C2 and USB-A ports share 33W output power.The fuselage adopts a long columnar design, and the shell is made of PC fireproof material, sprayed with silver gray metallic paint, beautiful and fashionable.There are 188 LED digital tubes on the side, which support the percentage display of power.
The charging head network has learned that the built-in VBUS switch tube of the mobile power supply needs to have sufficient current bearing capacity, low on resistance and other characteristics in order to achieve 100 watt high power output.At present, there are many VBUS switch tube products with 30V withstand voltage and less than 10m Ω conduction resistance on the market, such as Atadiman AD30P47D3, Huarui Micro HRT30N08J, Paisidi PAN3050P and Core Electric Element PED3008M, and four hundred watt mobile power products of Hayside, Romesh, Murray and Kutec brands have been adopted.
With excellent performance, these VBUS switch tube products provide a strong support for mobile power supply to achieve a single port power output of more than 100W, and meet consumers' demand for faster charging speed.In the future, with the continuous iteration and popularization of fast charging above 200W, the performance requirements for voltage withstand and resistance of VBUS switches will become increasingly strict. Therefore, relevant power device manufacturers need to continue to innovate to meet the market demand.