RP20-483.3SFW

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DC-DC converters are an integral part of the power system in many applications, such as for powering electronic equipment, communications systems, automobiles, and military applications. They allow equipment to be powered remotely, in environments that have limited access to AC power sources. The RP20-483.3SFW is a wide-ranging DC-DC converter manufactured by Murata Power Solutions that enables improved power system performance and efficiency over a broad range of input and load conditions.

The RP20-483.3SFW is an isolated DC-DC converter that features a 2kVac input to output isolation. It can accept input voltages from a range of 5V to 13.2V and provide a regulated output voltage of 5V with a current range of 0.3A to 1A. The device utilizes synchronous rectification, combining both a power MOSFET switch and a diode Schottky in the output circuit, which allows for an efficient conversion and improved power dissipation.

The RP20-483.3SFW is designed to regulate the output voltage regardless of the input voltage or the load current. This allows for the device to provide stable output power in applications where noise immunity and high performance is essential. The RP20-483.3SFW operates at a switching frequency of 1 MHz, providing a low external component count, smaller circuit board size, and improved power density when compared to more conventional DC-DC converter designs.

The RP20-483.3SFW employs an internal soft-start circuit, reduces the inrush current during start-up, improving regulation stability and enhancing component reliability. The device also includes an integrated enable function, allowing for the output voltage to be regulated via a logic level signal to either enable or disable the output voltage.

The RP20-483.3SFW can provide greater power efficiency than other DC-DC converters due to its wide Range of input voltages, combined with output current limit, short-circuit protection, and over-temperature protection. The device includes full protection against over-current fault conditions, with an adjustable over-current latch circuitry that can limit the output current to a preset maximum. To ensure low power dissipation during operation, the device features a low quiescent current of 2mA when enabled.

The RP20-483.3SFW also offers exceptional EMI performance, meeting the CISPR22 and EN55022 requirements to ensure low-noise output. The device also complies with CE requirements and has an output voltage accuracy of 2%, making it a suitable choice for applications with stringent regulation requirements. The device also has an operating temperature range of -40°C to 85°C, allowing it t be used in a wide variety of applications and environments.

The Murata RP20-483.3SFW is ideal for applications where a wide range of voltage inputs, small size, robust protections, and low noise acceptability are essential. The design combines synchronous rectification with an isolated package, providing excellent regulation and efficiency over a wide range of input and load conditions. With a low quiescent current, compliance with a variety of regulations and standards, and very high EMI performance, the RP20-483.3SFW is a suitable choice for DC-DC conversions in a wide range of applications.

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