, Diamond Electric uses GaN to develop thin 1kW isolated bidirectional DC-DC converter

Temescal

Semigas

CLICK HERE: free registration for Semiconductor Today and Semiconductor Today ASIACLICK HERE: free registration for Semiconductor Today and Semiconductor Today ASIA

Join our LinkedIn group!

Follow ST on Twitter

IQE

24 January 2018

Diamond Electric uses GaN to develop thin 1kW isolated bidirectional DC-DC converter

© Semiconductor Today Magazine / Juno PublishiPicture: Disco’s DAL7440 KABRA laser saw.

Diamond Electric Mfg Co Ltd of Osaka, Japan (which makes ignition coils for automobiles, and designs and makes DC-DC convertors such as power conditioners, onboard chargers and onboard DC/DC converters) has developed a business-card-sized, thin isolated bidirectional DC-DC converter (IBDC).

By adopting gallium nitride (GaN)-based power semiconductors, the technology can substantially downsize and reduce the weight of DC-DC converters (which are essential for rechargeable batteries) and is expected to contribute to the proliferation of electric vehicles (EVs) and smart grids.

In recent years, the requirements of large-capacity batteries for EVs and smart grids have caused the voltages of rechargeable batteries to rise. Demands are therefore growing for higher-level isolation of DC-DC converters to ensure safety and to meet safety standards.

In response, Diamond Electric has developed the new IBDC by fully utilizing its controlling technology (for which a patent is pending). The IBDC combines both charger and discharger circuits.

By adopting high-frequency switching technology (up to 2MHz), Diamond Electric has developed the ultra-compact IBDC (93.5mm x 60mm x 10.5mm excluding the control circuit and heatsink).

Further, the use of GaN-based power semiconductors has enabled high conversion efficiency (up to 95%) despite the high-frequency switching. By utilizing these technologies, Diamond Electric expects to downsize the final product to 25% of the size of existing models.

Tags: Power electronics GaN power transistor

Visit: www.diaelec.co.jp/en

Share/Save/Bookmark
See Latest IssueRSS Feed

AXT