Now the power supply of consumer-grade digital electronic products is used as a silicon device as a power conversion from AC to DC, and then used to convert the DC power supply of the load, now the best overall conversion efficiency of the power supply can only reach more than 70%, the power load is about 50% The conversion rate is the highest, and the efficiency can reach 94% to 96%, but the conversion efficiency is very low under low load, and even 60% can not be reached, and the low conversion rate causes unnecessary waste. ⊕ 8⊕8⊕ read ⊕ books, .◇.o≮

Most of the inefficiency of power conversion systems on the market today is caused by "switching losses", because these silicon devices have very low switching frequencies and large on-resistance.

If you think of household alternating current as a gushing water source, power devices need to hold a spoon to scoop up water in the water source, and then turn it into direct current to power digital products.

Traditional silicon power devices may scoop 10 times per second, so gallium nitride power devices may scoop water at several times the rate of silicon devices per second, and the efficiency is naturally much higher.

After Huaxing Group acquired Ximenkang Company, the original company was mainly engaged in the research and development of silicon carbide power devices, and accumulated a large number of technical patents in power devices, and the company's technical team began to develop gallium nitride power devices on these technical patents.

Now Simmencom has begun to switch from silicon carbide technology to research and development of gallium nitride technology, because the difficulty of silicon carbide to prepare chips is more difficult than that of gallium nitride materials, because silicon carbide has a large microtubule defect density when preparing chips, the epitaxial process is inefficient, and the doping difficulty is greater than that of gallium nitride.

It was not until five years ago that GaN made a breakthrough in seed crystal growth technology, and Ximenkang also switched to the research and development of GaN technology. ∝ 8∝8∝ read ∝ books, .◆.o+

Of course, Huaxing Group has not given up the research and development of silicon carbide technology, but turned to the production and supply of high-quality silicon carbide materials, mainly used in high-temperature ceramics, fireproof materials, and composite materials.

Through continuous research and development over the years, Huaxing Group has also launched a variety of gallium nitride devices with different functional specifications.

The payoff of adopting GaN devices is faster switching elements, much higher efficiency than slower silicon devices, and faster switching speeds that greatly reduce the size of magnetic and capacitive circuit components.

The cost of gallium nitride devices developed by Huaxing Group has now dropped to a very low level, and it is also ready for large-scale promotion in the consumer electronics market.

The next step for Huaxing Group is to launch a product line of low-current GaN transistors for household use, with currents ranging from 3.5A to 11A, mainly developed for power applications below 1kW, suitable for consumer-grade power products.

It is mainly used in workstations, laptops, TV power supplies, wireless power systems and home motor drives.

Huaxing Group of Companies offers a range of discrete devices to maximize design freedom, accommodate different power levels, and allow power system engineers to maintain design controls and change parameters to meet specific requirements such as electromagnetic compatibility radiation.

At the same time, it will also provide power development boards to domestic power supply manufacturers and provide high-efficiency GaN power conversion solutions for domestic manufacturers.

Products within the Huaxing Group will be the first to use these GaN power products.

The mobile phone R&D department of Huaxing Communication Equipment Co., Ltd. has also proposed a plan for battery fast charging technology, and is now developing fast charging chips, hoping to shorten the charging time of mobile phones as much as possible.

At present, the charging time of ordinary mobile phone batteries is basically about four hours, and the R&D personnel of Huaxing Group Company hope to shorten the charging time to less than one hour.

After all, Huaxing Group attaches great importance to user experience, and how to solve the pain points of user charging at this stage is also one of the technical research projects included in Huaxing Communication Equipment Company, and now it has started high-power fast charging technology.

Now Huaxing Group has mastered the high-frequency and efficient gallium nitride power charging adapter technology, the heat dissipation and the volume of the adapter have been very well controlled, and the next thing to overcome is the fast charging control chip and circuit design and the algorithm of the control chip.

Of course, there is also a battery electrode material, electrolyte, and separator materials carried by the mobile phone to adapt to the high current during high-power charging, and the sensor chip in the electrode also needs to be purchased to monitor the situation in the battery, because the lithium battery is easy to overcharge.

Yang Jie also hopes that Tongji University will also carry out research and development projects in this area and cooperate with the product technology route of Huaxing Group.

Wan Zihao also nodded at this and said: "The Chemical Engineering Research Center of Tongji University will fully cooperate with you. ”

He admires Huaxing Group's grasp of the needs of the market, and he himself is also full of expectations for GaN power technology to enter the consumer electronics market.

In fact, he himself is not satisfied with the fact that he still has to carry a large and heavy external power supply when he travels with a laptop, but due to the cost and the limits of silicon-based devices, notebook manufacturers can no longer provide a smaller power supply.

However, he was pleasantly surprised that Huaxing Group Co., Ltd. has begun to devolve GaN devices to consumer-grade digital electronic products through years of research and development on GaN materials!

In the 70s, the idea of silicon-based power device designers believing that there would be a technology to completely replace the BJT was realized, and now silicon devices are really changing people's lives and giving rise to new applications and new markets.

Now the silicon-based power device is about to reach the limit, but what makes him happy is that the gallium nitride power device is completely mastered by the domestic Huaxing Group Company, which is a very important turning point, as Huaxing Group will enter the market more and more gallium nitride transistor chips, it will completely change the market pattern.

Yang Jie said to Wan Zihao with a smile: "In the next few years, consumers will soon find that the power supply of the gaming notebook can be very small, or even unnecessary, through the gallium nitride power supply that comes with the fuselage, only extend the socket to draw power to the AC power, and it is completely possible to kill the external power supply itself." ”

"Yang Jie, the emergence of gallium nitride power supply will really reshuffle the external power supply market again!"

Wan Zihao sighed.

"Our aim is to provide consumers and manufacturers with more advanced products and technical services, and I don't bother with how far we can go. ”

Yang Jie said with a smile. 11