Introduction to ROHM's New Control Reference Design
ROHM Co., Ltd. has exciting news in the power supply sector with the introduction of a cutting-edge reference design, known as REF67004. This design effectively utilizes a single microcontroller (MCU) to manage two prevalent types of power converters: critical-conduction-mode power factor correction (PFC) and quasi-resonant flyback. The innovative design is part of ROHM's LogiCoA™ power supply solution, emphasizing a hybrid strategy that brings together analog and digital management in power supply applications.
Significance of Hybrid Control in Power Supplies
The traditional approach to power supplies has often relied heavily on either analog or digital components, each having its strengths and weaknesses. Analog-controlled power supplies are popular in small to medium-scale industrial applications, such as robotics and semiconductor manufacturing, where reliability is critical. However, the increasing demands for precision can challenge purely analog designs. Digital solutions offer advantages in precision and configurability, but they can be hampered by higher costs and power usage.
ROHM's LogiCoA™ Power Supply Solution
The LogiCoA™ power supply solution from ROHM seamlessly integrates analog power stages with digital control, addressing these challenges head-on. By combining ROHM’s power devices and gate drivers with low-power LogiCoA™ MCUs, the company provides a versatile solution that is optimal for both consumer and industrial applications. Initial offerings included the REF66009 evaluation design for a non-isolated buck converter, setting the stage for the newly developed REF67004.
Key Features of REF67004
REF67004 stands out by boosting AC input through critical-conduction-mode PFC and employing a quasi-resonant flyback to achieve a regulated 24V DC output. One notable aspect is its calibration function, which enhances voltage precision and provides overcurrent protection by adjusting for variations in external component characteristics. This level of design fidelity allows for smaller devices and inductors, translating to reduced PCB area and overall system costs.
Data Logging and Configuration
This innovative reference design doesn't just stop at performance. It also incorporates operating data logging features, which include input/output voltage, current, temperature, pre-shutdown status, and cumulative operating time, all stored in on-chip non-volatile memory. Users can configure and retrieve parameters via a PC utilizing UART, supported by sample programs and the RMOS (Real-time Micro Operating System), available through ROHM's official site. For practical testing and evaluation, the LogiCoA003-EVK-001 reference design board is an excellent resource.
Expanding Applications of the LogiCoA™ Solution
There's considerable versatility to ROHM’s LogiCoA™ power supply solution, accommodating a wide range of devices across various sectors, with power requirements typically ranging from 50W to 1kW. Some applications where this solution excels include:
- Industrial robots
- Semiconductor-manufacturing equipment
- Gaming devices
This breadth of applications underscores the growing significance of ROHM’s technology in providing efficient energy solutions that meet the demands of modern engineering challenges.
About ROHM
ROHM Co., Ltd. is known for its commitment to innovation and technology, constantly pushing the envelope in semiconductor solutions. The company continues to release reference designs, reinforcing its mission to advance development in power supply technologies.
Frequently Asked Questions
What is the REF67004 reference design by ROHM?
REF67004 is a compact power supply solution that integrates PFC and flyback control, designed for efficiency in consumer and industrial applications.
How does the LogiCoA™ solution benefit power supply design?
By combining analog power stages with digital control, the LogiCoA™ solution provides enhanced precision, configurability, and efficiency, effectively addressing traditional design limitations.
What types of applications benefit from the REF67004 design?
This design is ideal for various industrial and consumer applications, including robotics, semiconductor manufacturing, and gaming devices, catering to power requirements of 50W to 1kW.
Can users configure the REF67004 remotely?
Yes, users can configure and retrieve operational data from the REF67004 remotely using UART, supported by specific software provided on ROHM’s website.
What materials are required to evaluate the REF67004?
The LogiCoA003-EVK-001 reference design board is recommended for practical evaluations, allowing users to test and assess the performance of the REF67004 design comprehensively.
