#Japan #ROHM #Kyoto #LogiCoA #PFC Flyback

ROHM Unveils a Revolutionary Power Control Design

In a ground-breaking announcement from Kyoto, Japan, ROHM Co., Ltd. has introduced an innovative reference design (REF67004) optimized for power supply management, addressing critical needs in both consumer and industrial applications. This newly developed solution employs a single microcontroller unit (MCU) to manage two types of power converters: the critical-conduction-mode power factor correction (PFC) and the quasi-resonant flyback converter.

This release marks a significant advancement in ROHM's LogiCoA(TM) power supply solutions, integrating a hybrid control approach that combines both analog and digital technology. By utilizing ROHM's silicon MOSFETs paired with gate-driver integrated circuits (ICs) along with the low-power LogiCoA(TM) MCU, this design optimizes performance and reliability while reducing overall system costs.

Meeting Industry Demands

The use of analog-controlled power supplies is prevalent in various small to medium power industrial applications such as robotic systems and semiconductor manufacturing equipment. As demands for reliability and precision increase, reliance on pure analog designs becomes impractical. Fully digital systems provide the granularity needed for precise control but have limitations due to higher costs and energy consumption.

ROHM's innovative solution tackles these challenges head-on. The REF67004 reference design enhances power supply reliability and efficiency through its unique combination of PFC and flyback technologies. The primary function of REF67004 is to elevate the AC input via efficient PFC, providing a stable 24V DC output using a quasi-resonant flyback mechanism.

Features and Benefits

One of the most impressive aspects of REF67004 is its built-in calibration function. This feature compensates for variations in external component characteristics, allowing for superior voltage regulation and robust overcurrent protection. Consequently, designers can work with tighter margins, enabling the use of smaller, lower-power devices and inductors. This not only minimizes the PCB area but also leads to reduced system costs.

Furthermore, the REF67004 can monitor essential operating data, including input/output voltage, current, temperature, shutdown status, and cumulative operating time. This data is securely stored in on-chip non-volatile memory, allowing users to retrieve and configure parameters via a PC through a UART interface. This level of control is accentuated by sample programs such as the Real-time Micro Operating System (RMOS) available on ROHM's website.

The practical evaluation of the REF67004 is facilitated by the LogiCoA003-EVK-001 reference design board, providing developers with a hands-on approach to testing and implementation. ROHM continues to expand its reference design catalog, aiming to expedite customer development processes in power supply technologies and applications.

Diverse Applications

The LogiCoA(TM) power supply solution is designed for a broad range of industrial and consumer applications, specifically in devices requiring power outputs of approximately 50W up to 1kW. Notable application examples include:

• - Industrial robots
• - Semiconductor manufacturing equipment
• - Gaming devices

As ROHM forges ahead with these advanced solutions, the company is set to play a pivotal role in revolutionizing power supply systems, highlighting its unwavering commitment to innovation and performance enhancement in the electronics industry.

For further details, you can visit ROHM's official page to explore their extensive lineup of power supply solutions.

Conclusion

The introduction of the REF67004 reference design marks a significant milestone for ROHM in the power supply sector. With its integration of hybrid control technology, it not only meets the present demands for high-performance power supplies but also sets the stage for future innovations in energy-efficient solutions. As industries increasingly adopt these advanced technologies, ROHM stands ready to guide the way toward more reliable and efficient power management.