RPA200H-11048SRUW/N

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DC-DC converters play an important part in many systems, particularly in the efficient power conversion of various voltages. The RPA200H-11048SRUW/N is a DC-DC converter designed for general-purpose applications. It offers superior performance and high power density for distributed, point-of-load, and telecommunications systems. The application field and working principle of this power converter are discussed in this article.

Application Field

The RPA200H-11048SRUW/N is designed to convert an input voltage of up to 48V down to an adjustable output voltage ranging from 0.8 to 10V. It has an output current rating of 20A with high efficiency and tight line and load regulation.This DC/DC converter is fully encapsulated in a low profile, shielded metal case and features over-temperature, over-voltage, and over-current protection, making it a reliable and robust solution for a variety of applications, including distributed power systems, telecommunications systems, and other small electronics.

The RPA200H-11048SRUW/N is suitable for a variety of demanding power requirements, such as powering multiple small loads with different voltage needs, driving loads with capacitive, inductive, or resistive characteristics, and providing a stable source of power to sensitive analog circuits. It is also well-suited for high-density power modules with limited space.

Working Principle

The RPA200H-11048SRUW/N is a synchronous buck regulator that utilizes a synchronous rectification topology to efficiently convert a wide input voltage range to an adjustable output voltage. The power conversion is regulated by a simple voltage-mode control system, which senses both the input voltage and the output voltage to ensure consistent voltage regulation over line, load, and temperature variations.

Power to the RPA200H-11048SRUW/N is provided through a single-pin input connector. A voltage divider across the input pin senses the input voltage and then controls the duty cycle of a pair of dedicated power MOSFETs. The two MOSFETs are driven in phase to achieve high efficiency and minimize switching losses. The rectified input voltage is filtered, and then regulated by a control IC to maintain the output voltage at the desired level.

An on-board voltage monitor is included, which can report the input and output voltages to the host controller. The host controller can then use this feedback to adjust the output voltage if necessary. The output voltage can also be adjusted manually with the on-board potentiometer.

The RPA200H-11048SRUW/N features a wide working temperature range of -40 to +85°C, allowing the device to operate reliably in diverse environmental conditions. It is also designed to meet the requirements of strict safety standards such as the UL/IEC 62368-1 and EN60950, providing users with a safe and reliable DC-DC converter for their power needs.

Conclusion

The RPA200H-11048SRUW/N is a reliable and efficient DC-DC converter designed for distributed power systems, telecommunications systems, and other small electronics. It efficiently converts an input voltage of up to 48V into an adjustable output voltage ranging from 0.8 to 10V, making it a great choice for a variety of applications. It is protected with various safety features and has a working temperature range of -40 to +85°C, allowing it to be used in a wide range of environments. With its high efficiency, tight line and load regulation, and compact size, the RPA200H-11048SRUW/N is an ideal choice for power requirements in distributed, point-of-load, and telecommunications systems.

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