PXO78-500-S Series DC-DC Converters CUI Inc PXO78-500-S Series DC-DC Converters offer a 4.75VDC to 36VDC input voltage range, 500mA maximum output current rating, and up to 95% efficiency. These converters feature output short-circuit protection, an economical open-frame design, and support negative output. PXO78-500-S converters are designed to meet BS EN IEC 62368-1 and EN IEC 62368-1 standards. CUI Inc PXO78-500-S Series DC-DC Converters are built for applications where board space is limited and maximizing energy efficiency is important.