preface
Wireless charging is an emerging form of mobile phone charging in recent years, and it is very convenient to put and charge as you go. Many owners of fuel vehicles will also buy wireless charging car charging to put in the car for convenient charging of mobile phones, and charge without two hands plugging in as soon as they are released. New energy vehicles have the advantage of being a latecomer, that is to say, most of the new cars have been front-installed wireless charging, and the mobile phone can be charged in the corresponding charging position without plugging in.
For the front-loading wireless charging of new energy vehicles, it is a wireless charging solution provided by wireless charging solution manufacturers to cars. This wireless charging needs not only to meet Qi certification, but also to meet the stringent vehicle-grade hardware standards used. Since the life cycle of the car is 10-15 years, there are very high requirements for the reliability of front-mounted wireless charging products and wireless charging solution manufacturers.
Chip introduction
Vodak Semiconductor's automotive-grade certification is two smart full-bridge chips for wireless charging emissions, NU8015Q and NU8040Q, which support 15W and 40W wireless charging outputs. Compared with the solution of driver plus independent MOS tube, The Volta integrated power stage not only has the advantage of high integration, but also requires the certification test of chips and devices separately for the driver with the moS tube, and the Volta intelligent full bridge also has a cost advantage.
Vodak NU8015Q and NU8040Q are wireless charging transmitter intelligent control chips, the chip internal integration of full-bridge MOS tubes and drivers and other circuits, of which NU8015Q supports up to 15W wireless charging output, support 4V-21V supply voltage range. The NU8040Q supports a 40W wireless charging output, supports a 4V-21V supply voltage range, and supports an ambient temperature range of -40°C to 105°C.
At the same time, the integrated power stage chip also supports 5V Buck, 3.3V/2.5V LDO, current detection circuit and power measurement, integrated Q value detection and digital demodulation circuit. Support input undervoltage lockout, overvoltage protection, overcurrent protection and thermal shutdown and other perfect protection functions. The chip provides I2C interface to communicate with the controller to achieve a highly integrated, flexible wireless charging design.
The picture shows the reference design of automotive wireless charging launched by Vodak Semiconductor based on the NU8040Q integrated power stage chip, NVTREF8040Q, which supports 50W wireless charging power and has an efficiency of up to 78%.
Vehicle specification level test report
Vodak Semiconductor NU8015Q/NU8040Q integrated power stage chip automotive grade device reliability test report, issued by Hefei Weisbo Detection Technology Co., Ltd.
It is reported that the vehicle specification certification takes several months, and it is necessary to perform various tests on thousands of samples. Only after passing the vehicle specification test verification, the world's well-known car manufacturers may choose. Therefore, wireless charging manufacturers that can pass the vehicle specification level certification not only have strong research and development strength, but also the reliability of the device is also in the leading position in the industry.
The industry's most representative automotive grade keyword AEC-Q100 is a specification specified by the American Automotive Electronics Association AEC, mainly for the integrated circuit products for automotive applications designed a set of stress test standards, this specification is very important to improve product reliability and quality assurance. The AEC-Q100 is designed to prevent the possibility of various conditions or potential failure conditions, to carry out strict quality and reliability confirmation of each chip, and to conduct standard specification tests on product functions and performance in particular.
Compared with consumer and industrial electronics certification, AEC-Q100 vehicle specification certification is more stringent.
AEC-Q100 certification includes accelerated environmental reliability verification, accelerated life simulation reliability verification, package reliability verification, chip wafer process reliability verification, electrical parameter verification, and defect screening inspection. Taking quantitative data as the basis for product quality, the specific use environment and specific specifications and functions of the product in a given time are simulated by experiments, and the probability of the product to complete the work objectives is calculated, and the quantitative data is used as the basis for product quality.
New energy vehicle market opportunities
Quoting data from the China Association of Automobile Manufacturers, from January to October 2021, a total of 2.566 million new energy vehicles were produced, with a total of 2.542 million units sold, and each vehicle had at least one wireless charge or two. With the standard wireless charging function on mobile phones, wireless charging support has also become the standard function of new energy vehicles, and traditional fuel vehicles are also increasing wireless charging support.
From January to October, the cumulative production of automobiles was 20.587 million units, corresponding to a considerable number of wireless charging, and there is a huge market space. Vodak Semiconductor is the first time that domestic wireless charging chip manufacturers have obtained vehicle specification level certification, compared with the wireless charging solution of traditional discrete components, Vodak integrated power stage not only simplifies the design of wireless charging power stage circuit, but also optimizes the overall system cost, which is very scarce in the market.
About Voda
Vodak Semiconductors is a leading supplier of power management chips and solutions, and Vodak is committed to providing high-performance power management chips and power system total solutions for consumer electronics, automotive electronics, industrial and medical fields. At the same time, Vodak is also the only semiconductor company in the industry that can provide mature wireless charging and wired fast charging solutions.
Vodak Semiconductor has accumulated a number of core technologies through comprehensive innovation in semiconductor process, design, packaging and power system architecture. Vodak products cover wireless charging transmission and reception chips, wired fast charging chips, display power chips, protection chips and automotive power chips. Vodak has become the core supplier of international mainstream mobile phone brands and mobile phone accessories manufacturers, and Vodak's one-stop power management solution has also become the first choice for internationally renowned consumer electronics brands. Up to now, Vodak has completed multiple rounds of financing, for more information, please contact Vodak original factory and authorized agents.