RS-4805S/H3

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DC DC Converters are used in applications ranging from industrial processes, medical technology and energy systems to telecoms, automotive and consumer electronics. One type of DC to DC converter is the RS-4805S/H3, a high frequency switch mode regulator that converts an input voltage of up to 48Vdc into an adjustable output voltage between 4.2V and 35V.

The RS-4805S/H3 consist of an input AC-DC bridge rectifier, filter capacitor, switching power transistor and the output LC filter. It is also supplied with an opto-coupler to give feedback to the SMPS control IC. When AC power is supplied, the SMPS IC first energizes the opto-coupler which turns on the switching transistor, allowing it to draw power from the input into a capacitor. The capacitor then stores energy and the transistor switches off when the capacitor voltage exceeds the output voltage.

The RS-4805S/H3 works in a discontinuous conduction mode (DCM) and contains an intergrated over voltage protection circuit. The DCM of the converter provides the output voltage with low noise and high ripple rejection ratio, one of the advantages of this type of converter versus linear regulators. It also has a built-in high frequency EMI filter and temperature compensation.

The maximum power of the RS-4805S/H3 is 50W and its operating temperature range is from -40°C to +125°C. The input current is rated at 2.7A with 0% load and 0.5A with full load. The switching frequency can be adjusted between 388KHz and 420KHz, and the minimum load required for the converter to stay in regulation is 1A.

The RS-4805S/H3 has many applications including automotive, medical, industrial, consumer, and telecom systems. It is suitable for charging batteries, as well as providing stable and adjustable power supply that meets specific output current and voltage requirements in regulated systems. This type of DC to DC converter is also used in LED lighting, small electric appliances, and other power electronic applications.

In summary, the RS-4805S/H3 is a high-frequency switch mode regulator with many advantages over linear regulators. It is well-suited to both regulated and unregulated power supply applications with an adjustable output voltage from 4.2V to 35V and a maximum power of 50W. This DC to DC converter has a wide range of applications in both consumer and industrial settings.

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