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Chapter 8 Dual Circuit Charge Pump Technology

Futian District.

Gesai Science and Technology Park.

This is the largest scientific research park in Shenzhen City. There are all kinds of laboratories in it, and they are rented out. The main service targets are small businesses that cannot afford to build experimental bases.

Due to the special nature of the laboratory, the security guards here are all veterans, who perform militarized management and patrols. It covers an area of more than 300 acres, has thousands of cameras, and also has floor access cards. If you want to sneak in and steal The information is simply impossible.

In a certain experimental building in Area A, Gao Zhengqian was staring at the screen attentively, waiting for the end of the simulation verification.

In the team behind him, some were responsible for recording data, some were organizing files, and some were resting.

No one knows how their team of 20 people completed such a large-scale chip design task and reached the stage of simulation verification in just three months.

“drop!”

The door to the laboratory was opened.

Chen Xing also put on a white coat and walked into the laboratory.

The first time he saw Gao Zhengqian, he couldn’t wait to ask��”Chief Gao, did the simulation verification pass?”

“Not yet, still waiting for the results of circuit level simulation”

Gao Zhengqian raised his head and replied.

Just after he finished speaking, he patiently explained:”After the circuit-level simulation passes, we will perform logic synthesis, convert the circuit into a gate-level circuit, and then conduct simulation verification. After passing the circuit-level simulation, we will also conduct special simulations, such as chip Module group, packaging, layout, etc., and finally evaluate the power consumption, timing satisfaction, signal integrity, etc. of the circuit”

“The president can go to the cubicle to take a rest, or go to the fast charging laboratory. Chief Yang heard that there has been a technological breakthrough. I will let you know when the simulation here is completed.”

“Fine”

Chen Xing took the elevator again.

I originally thought that chip simulation would be fast, but I didn’t expect that the steps would be so complicated. No wonder a large number of scientific research experts would fail here. Chip design is really too complicated.

“Ding!”

The elevator door opened, and Chen Xing came to the third floor.

He skillfully used the access card to open the closed door of the laboratory.

As soon as he stepped into the laboratory, a familiar calm male voice came.

“The president is here!”

It’s Ding Yaoping, a blue-quality talent who specializes in type-c interface technology.

Fast charging technology is indispensable for power line support. Because he knows that type-c interface is the future trend, Chen Xing also arranged him to join the fast charging team to cooperate with Yang Bochao’s research on fast charging. Charging technology.

Before Chen Xing could respond, more than 30 people from the fast charging team put down their work and gathered at the door.

In the past three months, he had not done anything. In addition to researching the market, he also insisted on recruiting talents. , no matter blue or white, kill them all!

Now Longxing Technology has its own preliminary scientific research team.

In addition to the chip team and fast charging team, there is also an appearance design team, operating system design team and screen internal screen team Of course, except for the chip team and the fast charging team, the other teams are not staffed enough. They are only three or four people in size and have achieved very little results.

“The president is here, come and see our latest technological achievements”

Yang Bochao came to Chen Xing and enthusiastically introduced new results, and other scientific research talents also echoed

“Yes, yes, take a look at our latest results, I guarantee you will be shocked!”

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“This is going to be disruptive technology, we’re not kidding!”

“If the chip team can’t do it, then our fast charging team will take care of the company. This will be a historic turning point!”

“That’s right!”

“Come and see, President!”

The members of the fast charging team are full of confidence and have a sense of accomplishment written on their faces.

Chen Xing is also curious about how much surprise the fast charging team can bring to him in three months.

As he moves to the test bench , a”dissected” mobile phone came into view, Yang Bochao couldn’t wait to explain:”Our technology is called dual circuit charge pump fast charging”

Chen Xing nodded slightly without interrupting, indicating for him to continue.

“Didn’t we use a dual-cell series voltage divider before? Due to limited materials, we could only test a maximum charging efficiency of 80W, but this charge pump technology is different.”

“President, look here”

Yang Bochao pointed to the charging port of his mobile phone, and Chen Xing also noticed the difference.

Behind the charging port are two separate power lines, with a small device connected in the middle of each line. This should be what they call a charge pump.

“Assume that when charging a mobile phone, we input a high-voltage current of 20V6A. It will first pass through dual circuits. Although the dual-circuit design cannot divide the voltage like dual cells, it can divide the current evenly to obtain a high-voltage current of 20V3A. The current then passes through the charge pump.……”

Yang Bochao pointed to the device of the circuit and continued:”The charge pump will convert the 20V3A current into a voltage. When it re-enters the circuit, it will become a 10V6A current. Then the president will look here again.”

Chen Xing followed the direction of his finger, and the two circuits came together again, and he suddenly realized:”The two circuits are combined into one, the current is superimposed, and the voltage remains unchanged, so it is a high-voltage and large current of 10V12A, which is then divided by the two cells of the battery. Achieve 5V12A charging efficiency”

“Yes! Yang

Bochao gave a thumbs up and praised:”The president is very smart. This is our dual-circuit charge pump fast charging technology.””

“120W charging efficiency, although there will be 10% energy loss, it only takes 10 minutes to fully charge a 3000 mAh battery”

10 minutes!

Fully charged in 10 minutes!

Chen Xing swallowed and immediately thought of the second selling point of the new flagship, which was simply a dimensionality reduction attack.

The parameters of chargers on the market today are basically 100-240V~50/60Hz0.4A input current and 5V=2A output current. If a 3000 mAh battery is charged from scratch, it often takes about five to six hours. The efficiency very slow.

However!

The dual-cell design is different!

Even without charge pump technology, pure high-voltage and high-current charging can significantly shorten the charging time because two batteries are charged at the same time.

Now with the addition of a charge pump, you no longer have to worry about the battery being unable to withstand charging. The input current of the charger can be increased to 200V, and the voltage at the output can also be converted into a high voltage and high current of 20V6A to quickly charge mobile phones.

“Can charge pump technology be applied?”Chen Xing asked the question he was most concerned about.

“Charge pump technology can be applied, but…” Yang Bochao glanced at Ding Yaoping on the side and continued:”Let Team Leader Ding tell you specifically, he belongs to half of the field of power adapters.”

Ding Yaoping also immediately took a step forward, looked at Chen Xing and said:”Such a president, the 24 metal contacts of the type-c interface can be applied to the 20V6A fast charging technology, but the point that traps us is that the fast charging team lacks The power adapter design talent makes it impossible to design the power adapter. This also requires you to pay more attention to the corresponding technical talents.” have to!

Chen Xing finally understood!

The fast charging technology has been solved, but the power adapter has not been solved. He needs to recruit talents in the corresponding fields.

After calming down, Chen Xing nodded and responded:”I will arrange for people to come over as soon as possible. You can continue to study fast charging technology first.””

(End of this chapter)