Rohm AC/DC Converter Control IC for SiC Drive
The BD7682FJ-LB allows easy implementation of SiC-MOSFETs in AC/DC converters. AC/DC converter design has proved challenging when using discrete configurations due to the large number of components required. In contrast, ROHM’s latest product provides a highly integrated solution and creates new standards for energy savings and miniaturization while supporting the adoption of SiC power semiconductors that provide breakthrough levels of efficiency and performance.
Compared to silicon MOSFETs used in conventional AC/DC converters, SiC MOSFETs help improve AC/DC converter efficiency by up to 6%. Furthermore, components used for heat dissipation are not required (in 50W Class power supplies), leading to greater compactness. The BD7682FJ-LB also includes multiple protection functions that enable support for high voltages up to 690VAC, making them ideal for general industrial equipment while improving reliability.
In recent years there has been an increasing trend to conserve energy in all areas, including in high voltage industrial equipment applications. To achieve these targets it is necessary to adopt advanced power semiconductors and power supply ICs. Among these, SiC power semiconductors are expected to gain ground over silicon solutions due to their higher voltage capability, greater energy savings, and more compact form factor.
However, until now there has not been a control IC that can sufficiently draw out the performance of SiC MOSFETs, particularly in AC/DC converter systems. As a result designers are faced with numerous problems related to power consumption and stability in a variety of high power applications.
To meet these needs, ROHM utilizes market-proven analog technology with SiC power semiconductor expertise to develop the industry’s first AC/DC converter controller specialized for driving SiC MOSFETs. And going forward ROHM will continue to pioneer industry-leading solutions, including the development of new AC/DC converter control ICs with integrated SiC MOSFET.