Analog-digital hybrid control technology

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ROHM Releases a New Compact PFC + Flyback Control Reference Design for Power Supply Solutions
Globenewswire· 2025-08-21 21:30
Core Viewpoint - ROHM Semiconductor has launched a new reference design (REF67004) that integrates analog-digital hybrid control technology to manage two types of power converters, enhancing efficiency in consumer and industrial power supply applications [1][3]. Group 1: Product Overview - The REF67004 reference design controls a Critical Conduction Mode PFC converter and a Quasi-Resonant Flyback converter, providing a regulated DC output of 24V from an AC input range of 85V to 264V [5][6]. - This design is part of ROHM's LogiCoA™ Power Supply Solution, which combines analog-controlled power stages with digitally managed circuits using low-power LogiCoA MCUs [1][3][8]. Group 2: Market Context - There is a growing demand for higher reliability and precise control in power supply applications, which traditional analog-only configurations struggle to meet [2]. - Fully digital power supplies, while offering fine control, have seen limited adoption in small to medium power ranges due to high costs and power consumption [2]. Group 3: Features and Benefits - The REF67004 includes a calibration function for high-precision voltage configuration and overcurrent protection, allowing for reduced design margins and the use of more compact power devices [6]. - It features a logging function that enables the storage of operational data in non-volatile memory, facilitating the identification of power supply failures [7]. - The design supports easy configuration and retrieval of power control parameters via PC, enhancing user experience and operational efficiency [7]. Group 4: Future Developments - ROHM plans to expand its lineup of power supply reference designs to support a variety of power topologies, further aiding customer development in power supply solutions [10][12].