Discover recommended power electronics and robust components for DC fast EV charging. Comprehensive guide with practical development advice and product propositions, focusing on power electronics for DC fast EV chargers.
onsemi’s advanced silicon carbide (SiC) technology and packaging innovation drive higher power density in DC fast charging—enabling more power in existing designs, and smaller, more efficient systems for next-gen designs. With a comprehensive intelligent power portfolio supporting AC Level 1 and 2 through high‑power level 3 DC fast charging, onsemi addresses the growing needs of passenger EVs as well as commercial and agricultural fleets. More than 20 years of system expertise allow us to deliver integrated, scalable solutions that simplify design and accelerate deployment.
Discover how onsemi's 100kW DC Fast Charger, powered by SiC modules and liquid cooling strategies, is setting new standards for ultra-fast, high-voltage EV charging.
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25kW DC charger demonstrates the PFC and DC-DC stage development implementing 1200V EliteSiC modules.
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3-Phase PFC and Active Front End (AFE) topologies play a critical role in the charger's system design. Unlock the key to efficient power and energy infrastructure.
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Learn how the PLECS model tool delivers accurate representation of how circuit will work using our EliteSiC, FS7 IGBTs and T10 MOSFETs.
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Our SiC MOSFETs are designed to be fast and rugged and include system benefits from high efficiency to reduced system size and cost. MOSFETs are metal–oxide–semiconductor field-effect transistors with insulated gates. These silicon carbide MOSFETs have a higher blocking voltage and higher thermal conductivity than silicon MOSFETs, despite having similar design elements. SiC power devices also have a lower state resistance and 10 times the breakdown strength of regular silicon. In general, Systems with SiC MOSFETs have better performance and increased efficiency when compared to MOSFETs made with silicon material.
There are many advantages to choosing SiC MOSFETs over silicon MOSFETs, such as higher switching frequencies. High-temperature development is also not a concern when using SiC MOSFET modules because these devices can operate efficiently even in high heat. Additionally, with SiC MOSFETs, you benefit from a more compact product size because all components (inductors, filters, etc.) are smaller.
Discover how SiC technology is transforming EV fast charging. Our resources will guide you through system design and key topologies for building efficient DC fast chargers.
onsemi package technologies are optimized for superior performance and lower thermal resistance than discrete devices. Find easy mounting packages that fit industry standard pinouts.
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Higher charging voltages reduce current for the same power level, which lowers conduction losses, minimizes heat generation, and enables thinner cables. This improves overall system efficiency, increases power density, and supports faster charging, especially for long-range passenger vehicles and heavy-duty commercial EVs.
Ultra-fast EV chargers can be designed with bi-directional power conversion topologies that allow energy to flow from the vehicle back to the grid. This enables vehicle-to-grid and vehicle-to-home applications, supporting grid stabilization, energy storage integration, and improved utilization of renewable energy sources.
High-power DC chargers use advanced topologies such as three-level active front ends, Vienna rectifiers, and dual active bridge DC–DC converters. For ultra-fast and megawatt systems, multi-level and resonant topologies are preferred to distribute losses, reduce component stress, and maximize efficiency.
DC wallboxes are compact, lower-power chargers typically used in residential or light commercial environments. They provide DC output without relying on an onboard charger, improving efficiency compared to AC charging, but they operate at much lower power levels than ultra-fast or megawatt DC charging stations.
System efficiency is critical because even small percentage losses translate into significant heat at high power levels. High efficiency reduces cooling requirements, improves reliability, and lowers operating costs, making it a key design target for ultra-fast and megawatt EV charging infrastructure.
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2025年4月9日
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