[Editor's Note] Digital technology has bestowed upon humanity the great gift of increased productivity along with convenience. Through digital technology, a world has arrived where everything that takes place in the digital world is realized in real life. To achieve this, humanity has come to require more stable and high-efficiency semiconductor solution technologies, as well as power and sensor technologies to optimize system performance and measure and detect everything in reality. In this field, Infineon is actively developing next-generation silicon and wide-bandgap power portfolios and cutting-edge sensor products based on 40 years of know-how and deep system understanding, and recently published a white paper covering its entire range of power and sensor products to help developers find the best solution for their requirements. Accordingly, this publication has prepared an opportunity to examine the application fields and use cases of power and sensor semiconductors based on Infineon 's 'Power and sensing Selection guide 2021' .

■EV Infrastructure, Power Transmission Controller & Current Center Solution Essential

Strategies to achieve zero carbon emissions by 2050 in most major cities around the world require, in part, the use of more electric vehicles and better high-speed charging infrastructure .

This certainly serves as an incentive to achieve the goal of lowering high urban pollution indices that are harmful to residents' health and quality of life, and zero or low emission mobility can help prevent the spread of air pollution-related health problems such as cardiovascular disease and asthma.

In this regard, more than 100 new electric vehicle models are scheduled to be launched in the market by 2025.

To this end, the government bears the burden of developing and implementing the charging infrastructure necessary to accommodate additional electric vehicles on the roads.

Due to urban space limitations, future charging demand cannot be met by private installations, and public chargers It appears that this will become increasingly important to enhance the usability of urban e-mobility.

In addition, demand for wireless charging of electric vehicles is also expected to surge.

Electric vehicle wireless charging is a wireless charging system that eliminates plugs and cables through wireless power transmission. This inductive charging is a technology that can charge a vehicle through energy transferred from a coil on the ground of a parking space to a coil integrated into the vehicle.

To enable this technology, related devices require controllers and current center solutions necessary for power transmission.

■ Realization of High-Speed EV Charging and Energy-Efficient DC EV Charger Design is Essential

As e-mobility becomes a part of daily life, the demand for more efficient charging solutions is increasing.

High-speed electric vehicle (EV) charging stations equipped with powerful DC chargers are the answer, and DC EV chargers can charge much faster than the standard AC EVs that many EV owners have at home. It is attractive because it can.

Today, a 150kW DC charger can charge enough energy for an electric vehicle to travel 200km in about 15 minutes. As rapid charging and battery technologies continue to advance and improve in the near future, experts expect charging times to be further shortened.

Infineon, a global leader in this field, supports the realization of energy-efficient DC EV charger designs through high-efficiency components and in-depth technical support.

According to the Infineon white paperferral&utm_campaign=202109_ap_en_pss_pss.pssg.2122&utm_content=pssg+promo+page&utm_term=korea">High-quality power semiconductor, microcontroller , gate driver , security ,It is known to cover power ranges from kilowatts to megawatts in its extensive portfolio of safety and certification solutions.





■ E-mobility, semiconductors for extending driving rangeThe role of the solution is important

The electrification of the powertrain enables locally emission-free mobility and driving pleasure. The necessary energy is stored and delivered from batteries.

Accordingly, the role of semiconductor solutions is paramount to activating core electrification functions, reducing charging time and energy transfer between high-voltage systems using existing 12V, and extending driving range.

All plug-in hybrid electric vehicles (PHEVs) and all-electric vehicles are equipped with one or more onboard chargers, allowing the battery to be charged from any standard AC power outlet.

Available power varies depending on local regulations and installation base, but generally, for PHEVs, it is up to 7.4kW, and the maximum power is up to 22kW. System designers face the challenge of increasing power density while simultaneously supporting various voltage and current levels.

For onboard charging, the key success factors are efficiency and high power density for a small form factor.

The long-term trend is shifting toward bidirectional charging, and chargers also supply power from the vehicle to the smart grid.

The architecture of an electric vehicle consists of one or more low-voltage sub-networks with low-voltage energy storage devices and multiple electric loads, and one high-voltage sub-network with high-voltage energy storage devices.





■ Light electric vehicles and forklifts must have low on-resistance for sufficient power generation

Light electric vehicles (LEVs) are becoming increasingly popular for daily commuting. In addition, L-category (lightweight) vehicles (e-kickboards, e-bicycles, e-scooters, e-motorcycles, e-rickshaws, and low-speed electric vehicles), also known as neighborhood electric vehicles (NEVs) (LSEVs), which started in Asia and are now expanding to Europe and the Americas, are being seen worldwide.

With state-of-the-art battery technology, LEV manufacturers are launching premium vehicles that require technology enabling longer range per charge at various speed classes up to 100 km/h.

On the other hand, electric forklifts (Class I, II, III) are capable of heavy-duty forklift operations, unlike 2-wheeled, 3-wheeled vehicles and LSEVs.

The faster the LEV runs or the higher the load the forklift must carry, the more powerful the motor and motor controller must be.

To achieve this, multiple best-in-class MOSFETs with the lowest on-resistance are required to be assembled in parallel to generate sufficient power.

MOSFETs and gate drivers used in light electric vehicles and electric forklifts must be robust against on-resistance and short-circuit conditions, tight rectification robustness, and instantaneous maximum power tolerance.

In addition, it must be designed to deliver the best performance in parallel operation with a wide voltage rating ranging from 25V to 300V.