Overview
The 25 kW 800V↔400V bidirectional DAB converter addresses the increasing demand for rack-level DC conversion in hyperscale AI data centers, as well as EV charging back-ends and storage systems. Its compact size, high efficiency, and compliance with Open Compute Project (OCP) rack standards make it a compelling platform for next-gen infrastructure.
Typical Clients
- Data center operators needing OCP-aligned rack power stages.
- EV fast-charging OEMs deploying 800V vehicle architectures.
- Renewable energy developers requiring 800V↔400V coupling for hybrid systems.
Use Cases
- AI cluster rack converters where >90 kW racks need efficient step-down.
- EV DC fast-charging stations bridging 800V grid storage with 400V vehicle batteries.
- Battery storage integration for grid balancing.
Design Philosophy
- Dual Active Bridge (DAB) topology with ZVS operation for high efficiency.
- Efficiency >97% validated across wide load conditions.
- Scalable modular design for parallel use in racks.
- Robust thermal and EMI design to support dense environments.
Block Diagram Placeholder
(800V Bus → DAB → 400V Bus)
Key Specs
- Power: 25 kW.
- Input: 800 VDC.
- Output: 400 VDC.
- Efficiency: ≥ 97%.
- Bidirectional operation with high-density cooling.
Simulation & Digital Twin
- Efficiency curve modeling.
- Switching loss analysis under variable loads.
Download LTSpice model → gated link.
Proof Points
- Validated >97% efficiency under full load.
- EMI profile aligned with CISPR limits.
- Thermal profile stable under dense rack conditions.
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