ROHM BD9G500EFJ-LA and BD9F500QUZ buck DC/DC converter ICs

ROHM has announced two buck DC/DC converter ICs with built-in MOSFETs, the BD9G500EFJ-LA and BD9F500QUZ, that support high voltages and currents in factory automation equipment such as PLCs/inverters and 5G base stations that handle high power. The non-isolated DC/DC converter ICs were developed by utilising analog design technology based on high-voltage BiCDMOS power processes to provide the power supply functionality required by increasingly sophisticated industrial equipment.

In addition to an 80 V withstand voltage for 48 V power supply systems, the BD9G500EFJ-LA is claimed to deliver the largest output current in its class (5 A), contributing to high functionality in charging and 5G base stations that handle large power. This enables the miniaturisation of equipment integrating multiple functions as well as industrial applications pursuing increased functionality by incorporating AI and/or IoT. The built-in low-loss MOSFET achieves a high power conversion efficiency of 85% over a wide output current range from 2 to 5 A (despite asynchronous rectification), which translates to good power-saving performance.

The BD9F500QUZ with built-in Nano Pulse Control technology, achieving a high step-down ratio, provides 39 V withstand voltage and 5 A output current in a compact, low-profile package (3 x 3 x 0.4 mm). Moreover, the product features an overcurrent protection as SEL1/SEL2 pins can be selected. These features are suitable for 24 V power supply systems, which should enable support for higher functionality and greater miniaturisation in a wide range of advanced industrial equipment (ie, factory automation).