Industry White Paper

Enhancing Conversion Efficiency in Power Management ICs

November 24, 2020 by ROHM

Whitepaper Overview

48V power supplies are becoming commonplace in a host of high power applications, including data centers, automotive, robotics, and telecommunications, as they provide an ideal balance of conversion efficiency and cost-effectiveness. At higher voltages, the current required to provide the same power is significantly reduced compared to lower voltages, such as 12V and 24V. Consequently, designers can save costs on insulation and meet regulatory requirements, such as lower carbon emissions in electric and hybrid vehicles. 

Most of today’s 48V switching converter topologies utilize MOSFETs as the primary switching element in the power supplies. However, MOSFETs offer a resistance between the drain and source that causes an intrinsic conduction loss in the device known as the ON resistance (Ron). Moreover, multiple converter stages further reduce efficiency. However, leading manufacturers are achieving excellent results in minimizing Ron in DC-DC converters by reducing the number of conversion stages and improving the device packaging design.

In this whitepaper by ROHM Semiconductor, learn more about the latest innovations in power converter design for greater efficiency. With its Nano Pulse Control™ technology, ROHM DC-DC power converters achieve the conversion of high voltages to low voltages for modern complex ICs in a single stage, ultra-fast switching ON times, and stable control at very narrow pulse widths.

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