RW2-4815S/H3

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DC–DC converters are electronic circuits or electromechanical devices which convert a source of direct current (DC) from one voltage level to another. DC–DC converters are used in a multitude of applications, from supplying the power for a microprocessor to providing the basis of DC telephone systems. Depending on the application, they may be designed to increase or decrease the voltage, as well as provide isolation between the input and output circuits.

RW2-4815S/H3 Application Field and Working Principle

The RW2-4815S/H3 isolated DC–DC converter is a highly efficient switching regulator designed to provide an isolated output from a single input voltage. It uses a buck-boost architecture and is designed for use in industrial and communications applications. This type of device provides regulated low output voltages from relatively high input voltages, while providing isolation between the input and output circuitry.

The device is designed to operate with input voltages ranging from 3.3V to 48V and output voltages from 2.5V to 15V. It has an efficiency of up to 98%, with an output current of up to 10A and an input–output isolation of 1500Vdc. The device has an adjustable switching frequency of up to 500 kHz and can be synchronized to an external clock. It also features overvoltage protection, output current limiting, and thermal shutdown.

The RW2-4815S/H3’s working principle is based on a typical buck-boost topology. In the buck-boost architecture, the input voltage is first rectified to DC, then switched and regulated with a pulse-width-modulated (PWM) voltage regulator. The output voltage is produced by a switching transistor that is turned on and off in the presence of a feedback control voltage. The feedback voltage is produced by a voltage divider placed across the output, whose voltage is compared to a reference voltage. Depending on the direction of voltage change, the device operates in either a buck or boost configuration.

The RW2-4815S/H3 is designed to provide a high efficiency, low cost, isolated DC–DC converter ideal for a wide range of industrial and communications applications. Its adjustable switching frequency, synchronizing capabilities, and overload protection make it an excellent choice for providing reliable and efficient power solutions. The device’s small size and low cost make it an ideal solution for applications where space and cost are major concerns.

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