Contributing to reduce the size and weight of DC-DC converters in the emerging electric vehicles (EVs) and smart grids, Diamond electric has developed a business card-sized, thin isolated bidirectional DC-DC converter (IBDC) in December 2017.
Using high-frequency switching technology (up to 2MHz), the company offers an ultra-compact IBDC (93.5 mm x 60 mm x 10.5 mm excluding control circuit and heatsink).
Expected applications are found in:-
– Onboard chargers
– Onboard AC power supply
– Battery system for household use
– EV stations (V2H)
– Uninterrupted power supply (UPS) system
– Portable battery system
The IBDC developed by the company combines both charger and discharger circuits.
Furthermore, the use of gallium nitride (GaN) power semiconductor enabled the achievement of high conversion efficiency (up to 95%) despite the high-frequency switching.
“By utilizing these technologies, the company expects to downsize the final product to 25% of other existing models.”
In recent years, requirements of large-capacity batteries for EVs and smart grids are causing rechargeable batteries to have higher voltage. Therefore, demands are growing for higher-level isolation of DC-DC converters to ensure safety and meet safety standards.
The technology is hoped to substantially downsize and reduce the weight of DC-DC converters, which are essential for rechargeable batteries in EVs and smart grids.
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