Reference design delivers a 200W isolated DC-DC converter using an active clamp forward topology with synchronous rectification for high-efficiency power conversion.
Toshiba Electronic Devices & Storage Corporation has developed a reference design for a 200 W isolated DC-DC converter based on an active clamp forward topology. Intended for industrial power systems, communications equipment and other applications requiring efficient isolated power conversion, the design combines high conversion efficiency with compact dimensions. Complete design resources are also provided to help engineers accelerate product development.
The converter operates from a DC input voltage in the range of 38.5 V to 60 V and offers a regulated output voltage of 24 V DC with output power up to 200 W. The active clamp forward topology, together with synchronous rectification, improves converter efficiency while reducing switching losses. At a 48V input under full-load conditions, the converter reaches a maximum efficiency of 90.8 per cent.
This evaluation board measures 130 mm x 115 mm x 30 mm, excluding the input and output terminals. The hardware incorporates optimised power MOSFETs and a photocoupler to support stable converter operation.
In order to facilitate the evaluation and customisation process, Toshiba includes detailed technical documentation such as the reference guide, design guide, schematic diagrams, bill of materials and PCB layout files. Additionally, there is design information available in several EDA formats that allows engineers to modify the hardware using their preferred electronic design automation (EDA) tools.
This reference design serves as a development platform for isolated DC-DC converters, enabling engineers to evaluate circuit operation, customisation the hardware for specific applications and reduce development time. This is achieved through a high-efficient topology and comprehensive design documentation.
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