PRODUCT

Innovation-Powered Next-Gen Power Conversion

Single-Stage Integrated OBC

An OBC (On‑Board Charger) is a key power conversion unit mounted inside a vehicle that converts household AC power to DC to charge the battery.

Our flagship product, the “Integrated OBC,” is built on proprietary patented technology and combines a single-stage OBC with an HVLV DC-DC converter. It delivers stable charging across a wide battery voltage range and supports simultaneous charging of high-voltage (400 V / 800 V) and low-voltage (12 V) batteries.

The unit also supports bidirectional V2X functionality, enabling the vehicle battery to power external loads (V2L), supply electricity to homes during emergencies (V2H), and feed energy back to the grid (V2G).

Main Features

World’s first single ‑ stage OBC compatible with single‑ and three ‑ phase input

Single‑stage power conversion → up to 97.7 % efficiency

Circuit-level integration of OBC and HVLV → reduces parts count and volume

Elimination of electrolytic capacitors → yields smaller size and longer lifespan

Integrated planar magnetics → lower material cost, size, and losses

Bidirectional operation (supporting V2G, V2L, V2H, and V2V)

One ‑ PCB architecture → supports SMT assembly and improves manufacturability

Technical Content

Item  Specifications 
Power  OBC

3 Phase 11kW

1 Phase 7.4kW 
HVLV 3 kW
Grid Voltage  88 Vac ~ 285 Vac
Battery Voltage  HV 360V ~ 840V
LV 9V ~ 15V
Efficiency 

97.7 % (OBC)

95.5 % (HVLV)
Power Density  1.7 kW/L (with housing)