Italian Semiconductor Launches Three Fast Charging Solutions Based on VIPerGaN

Nowadays, the world is facing extraordinary challenges, and protecting the Earth is not an option but an imperative. The semiconductor ecosystem carries the important mission of leading and promoting rapid innovation. As an important driving force for sustainable development, Italy France Semiconductor is firmly committed, responsible, and actively participates in sustainable innovation. Promote the production of renewable energy and achieve higher energy efficiency by optimizing intelligent (digital), energy, and power conversion through Italian semiconductor. At the same time, we use cutting-edge products and solutions to pave the way for carbon reduction, accelerate the achievement of carbon neutrality goals, and create a sustainable future. Through this summit, Italy France Semiconductor will work with you to explore cutting-edge power conversion and energy solutions, achieve higher energy efficiency in power applications, and promote the development of renewable energy.

They are the ST VIPer series introduction, the advantages of integrated GAN chips, VIPerGaN performance introduction, and key test results of the solution. Next, let’s enter the first part of this speech, ST VIPer’s series introduction.
The above is the product line of the VIPerPlus series, developed by Italian Semiconductor for the power supply field. The VIPerPlus series products have undergone more than 20 years of iterative updates, combined with long-term product running-in and debugging with customers, achieving higher reliability and stability, while enriching the matrix of the VIPerPlus series product line.
After years of development, the VIPerPlus series products have also introduced gallium nitride technology, and a new generation of VIPerGaN production series products have been developed. Thanks to the efficient and high power density characteristics of gallium nitride technology, the power limit of the VIPerGaN production series products has been increased to 100W, obtaining a wider range of application space.
VIPerGaN is a highly integrated gallium nitride chip with advanced PWM controller and 650V GaN power transistor. It integrates high-voltage starting function, no-load loss less than 30mW, adaptive dynamic blanking time and adjustable valley bottom synchronization, adaptive burp mode, etc. It also has complete protection functions, with a switching frequency of up to 240kHz. It is a high-efficiency, high-power density chip that adopts the QFN5x6 packaging process to effectively optimize the layout space of the PCB board and reduce peripheral components, achieving better EMI performance. This solution not only meets energy efficiency requirements but also has lower BoM costs, making it very suitable for manufacturers in the fields of chargers and adapters, home appliances, air conditioning, consumer goods, and other fields.
The advantage of integrating GaN chips is that they achieve direct drive of gallium nitride within the chip. Through a sealing scheme, parasitic parameters caused by external wiring are further reduced, thereby reducing the impact of parasitic oscillations on high-frequency switches and minimizing the interference of gallium nitride. Compared to separate GaN solutions, they have more advantages.
The above is the pin distribution diagram of VIPerGaN. From the figure, it can be seen that VIPerGaN has very few pins, but its functional configuration is very rich and flexible. Different pins can achieve different functions and have complete protection functions.
The VIPer series products have higher reliability under uncertain input voltage settings based on input OVP/Brin out settings. The Brown in protection function is used to define the minimum input startup voltage. When the voltage is higher than the set voltage, the chip will emit PWM drive; Brown out is used to define when the input shutdown voltage is lower than the set voltage, and the chip will shut down the driver, thereby protecting the product; The input OVP protection function plays a role in protecting the converter when the input bus voltage is overvoltage. If the user does not need to use this function, simply short circuit to the ground.