SEOUL, South Korea, March 23 — SK Signet (KONEX: 260870), a global manufacturer of high-power EV charging solutions based in South Korea, announced that it has launched its new 400kW All-in-One ultra-fast EV charger. This next-generation model simultaneously improves energy and space efficiency through high-density silicon carbide (SiC)-based power modules and a high-efficiency power design.
With this launch, SK Signet plans to strengthen its high-power tech leadership in North America and establish a deeper foothold in the fast-growing U.S. ultra-fast EV charging infrastructure market.
“The new 400kW All-In-One model is a breakthrough that simultaneously innovates power efficiency, density, and reliability,” said Hyungki Cho, CEO of SK Signet. He added, “As high-power demand accelerates across the U.S., SK Signet will spearhead the evolution of ultra-fast charging networks by utilizing our unrivaled leadership in technology.”
Engineered for High-Power, High-Density Deployment
Driven by the growing number of electric vehicles equipped with 800V high-voltage battery architecture, demand for 400kW ultra-fast charging infrastructure continues to grow. Site hosts and charging network operators increasingly require solutions that maximize output while minimizing space and installation complexity.
SK Signet’s new 400kW All-In-One charger integrates power cabinets and dispensers into a single compact unit, simplifying installation and reducing civil construction costs compared to distributed systems. The system can deliver stable 150–250kW charging to multiple vehicles while supporting full 400kW capacity for high-voltage EV platforms.
Silicon Carbide-Based High-Density Power Architecture
At the core of the new charger is a SiC-based high-density power architecture designed to deliver stable high-power charging while minimizing energy loss.
Key technical characteristics include:
- Modular architecture with multiple high-density SiC-based power modules, delivering up to 400kW and optimized for ultra-fast charging applications
- Up to 96.5% power conversion efficiency, reducing energy loss during high-power operation.
- Improved thermal management supporting stable performance during continuous charging.
This efficiency performance supports charging network operators in reducing electricity loss and improving overall site economics.
Scalable Power for Long-Term Infrastructure Planning
The charger is designed with a modular power architecture that allows charging operators to scale charging capacity as demand grows.
The modular architecture enables flexible deployment:
- Flexible Output Configuration: The modular architecture allows operators to configure power at 320kW, 360kW, or 400kW, depending on current business needs.
- Simplified Upgrades: Operators can scale capacity by simply adding power modules rather than replacing entire hardware units as vehicle battery technology evolves.
- CAPEX Efficiency: This “pay-as-you-grow” approach reduces initial capital expenditure while ensuring long-term infrastructure scalability.
- Future-Proof Design: 400kW capacity ensures readiness for the upcoming surge in high-voltage, large-capacity battery EVs.
Space Optimization: 54% Smaller Footprint
By adopting a fully integrated All-In-One structure, SK Signet has cut the required installation footprint by more than half—54% compared to the previous model at the same power capacity. This compact design enables efficient infrastructure deployment in space-constrained charging environments such as retail centers, gas stations, and urban parking facilities, providing operators with a competitive advantage.
Key design advantages include:
- Significant Footprint Reduction: Compared to deploying two V2 200kW All-In-One units to achieve the same 400kW output, a single 400kW All-In-One charger reduces the required installation area by approximately 54%, significantly improving power density per site.
- Maximized Power Density: By integrating the power conversion system and charge controller into a single device, it delivers more power per square foot than SK Signet’s V2 600kW split-type chargers.
- Simplified Installation: The integrated structure streamlines the construction process, leading to lower installation costs.
Enhanced User and Operator Experience
The new charger incorporates a range of user-centric and operational features designed to enhance charging convenience and improve system performance. These capabilities support high-power charging while providing operators with greater flexibility in deployment and site management.
Key usability and system features include:
- Liquid-cooled charging cables that reduce cable weight while maintaining stable high-power delivery.
- Ergonomic swing arm cable management system that improves accessibility regardless of vehicle charging port location.
- Support for both CCS1 and the North American Charging Standard (NACS).
- Flexible connector configurations ranging from single to quad cables.
- 32-inch touchscreen display providing a clear and intuitive user interface.
- Supports multiple payment methods including Plug & Charge, AutoCharge, credit card, and RFID.
Optimized software platform enables:
- System architecture optimized based on extensive operational experience and evolving user requirements.
- Enhanced response speed, operational stability, and system security.
- Energy-efficient UI design with improved visibility for outdoor environments.
- Customizable user interface to support diverse operator requirements.
SK Signet has completed the development of its 400kW All-In-One charger and has entered the initial production phase in the United States. It aims to launch the product in the European market by the end of this year, with a long-term strategy to expand supply to global markets.
