—— NCEPOWER PRODUCT APPLICATION CASE INTRODUCTION ——
—— Application Cases ——
▋ Mobile Phone Fast Charging
QC3.0:
We use an algorithm called Intelligent Negotiation for Optimal Voltage (INOV), which supports dynamic adjustment of working voltage from 3.6V to 20V in steps of 200mV. Compatible platforms include Qualcomm Snapdragon 820, 620, 618, 617 and 430, and Backward compatibility QC2.0 and QC1.0 devices, which can be used on USB Type-A interface, USB micro interface and USB Type-C interface.
Fast charging principle:
By replacing the traditional 5V/1, 2A charger mode with low voltage and high current, the effect of high current accelerated charging is achieved. And adjust the input voltage within a controllable range of voltage to achieve the effect of increasing charging power, thus forming fast charging.
Product:
NCEP6020AS, NCE0110AS, NCEP0114AS, NCEP0116AS, etc
▋ Emergency starting power supply for automobiles
Principle:
On the basis of mobile power supply, the car ignition function is added. The battery adopts three 3.7V power batteries in series, with an instantaneous output current of hundreds of amperes (up to 600A). Generally, the ignition frequency is around a few to 30 times. Due to the danger of short circuits in lithium batteries, multiple low-voltage and high current MOSs are required for short-circuit and overcurrent protection.
Market:
At present, foreign trade is the main focus, and Europe and America are sparsely populated. Breaking down is a painful thing. Rescue several hundred at a time, prepare one yourself, and ensure safety! Overcoming the difficulty of starting in winter, not afraid of getting stuck on the road!
Product:
NCE40H21D, NCE40H20, NCE40H25
▋ Multi port USB charger
Principle:
Simply put, it is an AC input and 5V output adapter, with an output current generally between 4-12A. Has multiple USB output ports for charging multiple mobile devices.
Circuit composition: AC-DC+synchronous rectification+overcurrent protection current+identification circuit, some supporting fast charging function require DC-DC boost module.
Market:
We often find that the patch panel at hand is not sufficient or the computer interface is not sufficient, leading to the emergence of efficient products such as multi port USB chargers. It has multiple USB ports that allow us to simultaneously charge multiple devices such as phones, tablets, speakers, etc., saving us a lot of time and resources.
Product:
AC-DC: 650V super junction series products, such as NCE65R360F.
Synchronous rectification: NCE40H12, NCE60H15.
Overcurrent protection: NCE3416.
DC-DC: NCE3010S, NCE3025Q.
▋ Aircraft model/drone
Principle:
The circuit used by drones in MOS is mainly for motor driving. The circuit structure is CPU, MCU+driver+MOS. Due to the high power of drone motors, it is usually necessary to equip professional driver ICs to drive high-power MOS. At the same time, the requirement for MOS internal resistance is extremely low. A single motor requires 6 MOSs, and the four axis drone in the right figure will use at least 24 MOSs.
Market:
Drones were first used for military purposes. In recent years, drones have been widely used in professional fields such as civil surveying and aerial photography, and in the consumer market, drones are also used in multiple scenes such as photography, weddings, competitions, etc. Multiple institutions predict that the market size of civilian drones is expected to reach 100 billion yuan in the next decade.
Product:
NCE30H10G
▋ Charging station
Principle:
It is divided into AC (home, vehicle charger), DC (Charging station, fast charging, charging station), with power above 5KW. The circuit structure is PFC+full bridge conversion circuit+synchronous rectification. Full bridge MOS, due to the presence of freewheeling during operation, results in reverse current, requiring high recovery time for MOS body diodes. MOS is mainly 600V and 650V. At present, the main brands are Infineon CFD and C7 series products.
Market:
With the continuous expansion of the scale of new energy vehicles, the public charging market has become a battleground for strategists. The imperfect charging facilities seriously restrict the development of new energy vehicles. In order to promote the development of the industry, the draft of the Construction Plan of Electric Vehicle Charging Infrastructure and the Guiding Opinions on Charging Infrastructure Construction formulated by the National Energy Administration clearly put forward that by 2020, the number of domestic charging and changing stations will reach 12000, and the number of Charging station will reach 4.5 million.
Product:
NCE60R021W
▋ High end mobile power supply
Principle:
On the basis of ordinary mobile power supplies, the fast charging function is added. Currently, the Qualcomm QC2.0 and QC3.0 standards are the main ones. The 2.0 output voltage is divided into three levels: 5V, 9V, and 12V, with a maximum current of 1A and a maximum power of 18W. For 3.0, QC3.0 is used as the first gear in 200mV increments. The output voltage is 5-12V. The circuit power is higher than that of ordinary mobile power sources, with a peak current of around 16A when boosting. The working frequency is around 700K-1M, with high requirements for MOS Qg, Ciss, and Coss. Low thermal resistance requirements. The boost section will use two high-power MOSs, one main switch and one synchronous rectifier.
Market:
Due to the promotion of Qualcomm, most mobile phones currently support fast charging function, and electronic devices are becoming increasingly powerful. People use mobile phones to pass their spare time. Nowadays, mobile phones are mostly equipped with built-in batteries, which are common to charge twice a day. The increase in battery capacity also requires higher power from the charger. If the mobile power still stays at turtle speed, I believe everyone can't bear it.
Product:
NCE3035G
▋ Electronic cigarette
Principle:
The Electronic cigarette is composed of battery, circuit (cigarette rod)+atomizer (cigarette bomb)+cigarette holder. The function of the circuit is to provide proper working voltage and power for the heating wire and provide power control. The smoke oil is heated by the atomizer to produce steam smoke.
Market:
Basically, it is an export. The main reason is that smoking is prohibited in public places abroad, especially in developed countries such as the United States and Europe. In such a context, Electronic cigarette have entered the vision of foreign smokers. Electronic cigarette have begun to develop initially abroad, and Electronic cigarette have been recognized by many foreigners as time goes by. Electronic cigarette will not cause Passive smoking, there are no more than 4000 harmful substances such as tar and carbon monoxide, and it will not cause great harm to the body. The taste is similar to real smoke, meeting the requirements of foreigners for cigarettes, so foreigners are very enthusiastic about Electronic cigarette.
Product:
The small power of around 10W is mainly NCE3401, NCE3415, and NCE2301.
30-150W mainly consists of DFN products, NCE3025G/Q, NCE3060G, NCE3035Q/G, and NCE30H10G.
▋ Principle Analysis and Market Situation of Electronic cigarette Scheme
Analysis of working principle of Electronic cigarette scheme
Electronic cigarette controls smoke output and working status through high-tech intelligent chips and air switches. In the interior of Electronic cigarette, Electronic cigarette liquid is transmitted to the atomization chamber through foam nickel and connected through the smoking air switch. The Electronic cigarette controller controls the operation of the atomization chamber through the current drive of the lithium battery. The heating wire in the atomization chamber generates high temperature to atomize the smoke liquid. Thus, a vapor mist simulating smoke is formed, which is just like ordinary smoke, making smokers' habits similar to those of ordinary smoke.
Structure and system composition of Electronic cigarette
The basic structure of ordinary Electronic cigarette is shown in the figure below, which is composed of battery (cigarette rod)+atomizer (cigarette bomb)+cigarette holder.
系统组成如下：
The types of Electronic cigarette include: conventional Electronic cigarette, Electronic cigarette with adjustable voltage, Electronic cigarette with screen display, high-power Electronic cigarette --20 watts, 30 watts, 50 watts, 100 watts, 150 watts, 200 watts, Bluetooth Electronic cigarette, intelligent Electronic cigarette.
▋Application of company MOSFET in lithium battery protection scheme
The company's MOSFET mainly has the following models applied in the Electronic cigarette scheme. From the above principle analysis, PMOS is applied in the voltage rise and drop circuit, and the voltage supplied to the heating wire is adjusted by controlling the passage of PMOS tube. NMOS is applied in switch circuits to control the on-off of the heating wire by controlling the on-off of NMOS. In addition, the corresponding competitor models and corresponding power are shown in the table below.
PMOS includes: NCE20P45Q, NCE20P70G. NCE30P50G
NMOS includes: NCE30T12G and NCE30T19G.
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