This article gives you a talk about efficient wireless charging MOS, as well as wireless charging program ranking corresponding knowledge points, I hope to help you, don't forget to collect this site oh. < / p > < h2 > the article directory list: < / h2 > < ul > < li style = 'margin - bottom: 3 px; list-style: none'>1, High-power wireless chargingWhat is the specific circuit design idea?
Wireless charging methods include electromagnetic induction, magnetic resonance, electric field coupling and radio wave transmission, etc. Wireless charging of mobile phones mostly uses the principle of electromagnetic induction. Electromagnetic induction wireless charging, when the power supply of the current through the coil (wireless charger powerThe coil) will generate a magnetic field, and the other unenergized coil (the electric coil on the phone side) will generate an electric current near the magnetic field, and charge the phone.
Wireless charging transmitter input DC Voltage (DC Voltage). The DC Voltage passes through the power bridge, producing an AC Voltage at SW1 and SW2, which is actually a square wave. Square wave loading generates an AC Current at both ends of the LC Tank. An alternating current passes through the coil to generate a magnetic field. The receiving coil senses this magnetic field, which is generated in the receiving LC TankAC Current (AC Current). According to officials of the Wuhan Construction Bureau, a total of 60 such wireless charging street lights have been installed on Jianghan Road in Wuhan, each street lamp has two wireless charging locations, and it is still high-power wireless charging, many experienced citizens said that it is not bad, it is very useful, charging on the roadside is also very convenient, of course, be careful of mobile phones being stolen.
Simply put, the mobile phone can be charged through a wireless charger, and then through wireless reverse charging, using the mobile phone as a power source to wireless charge another device that can support wireless charging technologyThe SC9711 and the WIZ MOS tubes play an important role in the DC-DC conversion, and together with the South Core SC3503 synchronous rectifier controller and the AOS32922 synchronous rectifier MOS tube, they achieve high performance voltage regulation. The precision design of the output filter capacitor and inductor, as well as the addition of the secondary buck IC SC9711 (made by the South core, supporting 100W power), further optimizes the output performance.
2, SP6518F also has built-in high pressure direct detection technology, withstand pressure up to 200V; And the self-powered technology greatly expands the application range of output voltage; Under low pressureIn high-current switching power supply applications, it easily meets level 6 energy efficiency and is a good solution for ultra-low on-voltage drop rectifier devices.
3, the output VBUS switch tube is made of Witz semi-conductor VS3610AE, NMOS, voltage 30V, PDFN3333 package. Vvs3610ae data information.
4. Detailed specifications of VS3618BE. Close-up of the USB-C port after removing the dust cover. Redmi 67W fast charger all disassembled. Charging head network disassembly summary as a game mobile phoneRedmi 67W fast charger has changed the standard color of traditional accessories, which is either black or white, but chose to use a yellow body with a black end cover plate, and the bright color makes this charger look more in line with the aesthetic style of young people.
More common SOCs are IDT, TI, COPO, purple light, etc. Most of the internal mobile phones are currently using IDT receiving schemes. Texas Instruments TI receiver chip used more than two years ago, and nowThey've downplayed the wireless charging space. The integration of this chip is high and the efficiency is high, but the cost of a single chip is high and some additional functions cannot be added.
The most used receiver is Ti's chip, about 12 pieces. There are many options for launch, and we're one of them.
AP45851 is a charging IC used in wireless charging and launching systems, compatible with the Qi protocol. The product is fully functional and highly integrated with all functional modules, providing excellent performance. AP45851 compatible with high power output, chip compatible with Qi fast charge protocol (5/9/12V)Application), according to the latest Wireless Charging Alliance (WPC) Qi version specifications.
Wireless charging PCB, different functions, the required components are different. The required components are: resistor, capacitor, resonant capacitor, resonant coil, MOS tube, control chip, protocol chip.
1, charger OEM: the main enterprises include Aohai Technology, BYD Electronics, Tianbao, Selkang and so on. In 2020, fast charging technology enters the era of hundreds of watts.In August 2020, OPPO and Millet new machines are equipped with 120W fast charging, and fast charging technology has officially entered the 100-watt era. According to Xiaomi Lab data, the 100W fast charge takes only 17 minutes to fill the 4000 mAh battery. The increase of fast charge power drives the rapid increase of mobile phone charger prices.
2, Aohai Technology: wireless charging leader, is a focus on intelligent terminal charging and storage products research and development, production and sales of national high-tech enterprises. Hengdian Dongmagnetics: one of the largest manufacturers of magnetic materials in China, wireless charging magnetic materials have been the industry's leading customersHousehold adoption. Haineng Industry: wireless charging leader, wireless charger is the company's mature products.
3, Shunluo Electronics (002138) : Wireless charging is the future of the most important, is expected to be one of the fastest growing product lines. The company is the domestic inductor leader. The company is mainly engaged in chip inductors, chip magnetic beads, chip varistor, NTC thermistor and common mode yoke coil and other products research and development, production and sales. Cloud Road shares (688190) 2022 report: Net profit of 90 million yuan, net profit growth rate of 428%, operating income 3900 million yuan.
4, at present, wireless charging is quietly changing our lives, and with the development of science and technology, the continuous improvement of equipment, we will enjoy more efficient life brought by wireless charging. Therefore, wireless charging is bound to be the future trend.
1, car wireless charger brand recommendation: Belkin wireless charger: Belkin is a well-known brand of electronic products, its car wireless charger quality is reliable,Strong compatibility, suitable for various mobile phone models. Romos wireless charger: Romos is a world-renowned mobile phone accessories brand, its car wireless charger design fashion, high charging efficiency, and relatively affordable.
2, Belkin (Belkin) is a well-known electronic accessories manufacturer, its car wireless charger is known for high quality and stable performance. Belkin's in-car chargers are generally simple in design, easy to install, and have safety features such as overcharge, overmild short-circuit protection. In addition, they tend to be able to provide faster charging speeds, ensuring that users are in lineThe phone was fully charged while driving.
3, the new flagship Mi 10, with up to 30W wireless flash charge function, minutes to increase the power, and there is 10W fast wireless backcharge, that is, you can charge the Mi 10 for other mobile phones that need to be charged.
4, in the Apple wireless charger, Apple's own brand and Belkin, Mophie, etc., are very good choices. Apple's own wireless charger is undoubtedly one of the best options. Not only is it perfectly compatible with Apple devices, but it's also designed and built for qualityThe volume is top notch.
5, as a professional manufacturer of chargers, the wireless charger has efficient and stable charging performance, can quickly charge the device, but also has good compatibility, suitable for a variety of devices supporting wireless charging technology.
6, after a period of hands-on experience, iWALK Magic Scorpion wireless charger is still good on the whole, with a good appearance design and excellent performance, support 10W, 5W, 5W three different wireless output, and support active heat dissipation function. And the price of 100 yuan, also let this wireless chargingAppliances become quite substantial.
1, %. The MOS tube efficiency of the three-phase motor is the highest, and the triode efficiency is in the middle, with an efficiency of up to 91%. The motor, commonly known as "motor", refers to an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction, and its main role is to produce driving torque as a power source for electrical appliances or various machinery.
2, cost problem: transistor cheap, MOS tube expensive. Power consumption problem: the triode loss is large, the MOS tube is small. Driving energyForce: mos tubes are commonly used for power switches, as well as high-current local switching circuits.
3, the temperature of the mos efficiency of the switching power supply is 125 degrees. According to the relevant public information, when the NMOS works at the maximum power of 150mW, the temperature of the NMOS junction to the air is: 150/1000*833, which is about 125 ° C. Switching mode power supply (SMPS), also known as switching power supply, switching converter, is a high-frequency electrical energy conversion device, is a kind of power supply.
4, theoretically can reach tens of MHz or more, the original analog oscilloscope input with MOS tube, so that the input impedance is high, 500MHz; In the common switching power supply, the operating frequency is generally not more than 100 kHz, most of which is dozens of kHz, which is mainly due to the high requirements for peripheral devices. Specific parameters can be queried in Baidu or other professional websites according to the model.
5, in recent years, the switching power supply of flat panel TV mostly uses high-power MOS tube as the switching tube, the reason why the MOS tube is based on the following advantages: high input impedance. Input impedanceHigh, is ordinary high-power triode incomparable. The MOS tube is used as a switching tube, and its input impedance is as high as 100MΩ, which does not produce a voltage drop on the excitation signal, and can be driven as long as there is a little voltage. Fast switching speed.
6, the application of high efficiency requirements should not use BJT. For ordinary high-power MOS, the switching time is NS level, and various switching applications with a frequency of 2MHZ can be dealt with. However, MOS has a high price, low voltage, and switching life limit. The input of MOS is equivalent to a capacitive load, which is the main factor affecting the speed of MOS switching.Therefore, the drive circuit must be able to provide sufficient charging and discharging capacity.
This is the end of the introduction of high-efficiency wireless charging MOS and wireless charging scheme ranking, do not know you find the information you need? If you want to know more about this, remember to follow this site. < / p >