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Ultra-compact bidirectional AC/DC charger
Our patented technology enables the development of ultra‑compact, bidirectional DC chargers for electric vehicles, replacing both:
- The on‑board charger (OBC)
- And the external wall‑Box.
This innovation fundamentally simplifies the EV charging architecture: one compact external charger replaces two large, costly, and space-consuming systems.
Why This Matters Today
Current EVs require:
- A bulky on-board charger inside the vehicle
- A wall-box or AC charging station at home
- Additional filtering, and safety components
The current approach means: High system cost, weight, and complexity, reduces available space, and complicates production, service, and after-sales.
Our Innovation: a New HOME-Charging approach
- Resonant power conversion and an innovative Converter Topology
- Wide Bandgap (WBG) semiconductors
- ZeroVoltage and ZeroCurrent Switching (ZVS / ZCS)
- Ultracompact galvanically isolated planar transformers
- Embedded high-density power electronics
enable our customers to build a single external charger that delivers high-efficiency DC charging directly to the vehicle without the need for an internal OBC.
Key Benefits for the EV manufacturer
Massive Space and Cost Savings
Eliminates the need for the internal on-board charger, additional filtering and cooling components, connectors, cables, and mechanical interfaces.
Higher Efficiency & Lower Thermal Stress
Resonant conversion + WBG + ZVS/ZCS = significantly higher efficiency across the full load range.
Simplified Vehicle Architecture
Less hardware inside the vehicle means lower weight, more design freedom, reduced production complexity, and fewer failure points.
Lower Total Cost of Ownership
Fewer components means lower cost in production, logistics, service, and after-sales.
Key Benefits for the EV user (at home)
No need for an expensive wall-box
The ultra-compact charger replaces the traditional AC wall-box entirely, reducing installation cost and eliminating the need for certified electricians.
Compatible with any EV
One charger for all vehicles. No dependency on brand-specific OBC limitations.
Portable and easy to use
Small, lightweight, and mobile. You can charge your EV wherever a suitable standard AC power source is available.
Bidirectional Ready (V2G / V2H / V2L)
The architecture supports modern bidirectional use cases without additional hardware, enabling energy flexibility at home.
Technology Maturity
This innovation and its achieved Technology Readiness Level are the result of a German government-funded development project, carried out in close cooperation with leading German technology companies.
These partners developed key components based on our specifications, including ultracompact galvanically isolated planar transformers, embedded high-density power electronics, and WBG-optimized resonant conversion stages.
Making possible what was previously considered impossible. The result: A validated, integration-ready innovation with a proper TRL — typically TRL 4-5.
You don’t need to waste resources reinventing the wheel — we’ve already done it for you.
Take this unique opportunity.
As with All DELANSYS Innovations:
- The invention has been validated in German government-funded technology projects, ensuring a solid and trustworthy development foundation.
- This results in a proper Technology Readiness Level (typically TRL 4-5), meaning the innovation is almost ready to be integrated into your product development with minimal risk.
- Together with our expert partners, we support you in efficiently integrating the innovation into your development process.
- Through trustful co-development, we help accelerate your time-to-market while ensuring a smooth and reliable transition into your product.
Getting in Touch - The First Contact
Tell us what you need. Together with our strong partner network, we accelerate your innovation journey.
Trustful · Efficient · Fast-Track · Real Innovation
