RW2-1209S/H3/SMD

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DC/DC converters are devices that convert an input voltage to a different output voltage. The RW2-1209S/H3/SMD is one such device designed to convert an input voltage from 9 to 18 Volts DC to a regulated output voltage of 12 Volts DC. The RW2-1209S can also be used to produce a dual output of 3.3 Volts DC and 5 Volts DC.

The RW2-1209S is a buck converter, meaning that when the output of the device is lower than the nominal value, the input voltage is converted into a higher output voltage. The reverse is true when the output is higher than the nominal value, and the input voltage is converted into a lower output voltage. This is achieved by regulating the current that passes through the main inductor. In buck converter applications, typically the switch needs to be operated in both directions, reversing its polarity.

The buck converter topology, used by the RW2-1209S, comprises a power semiconductor switch (normally a MOSFET), an electro-magnetic main inductor, a diode, and an output capacitor. The operation cycle starts with a closed switch, allowing current to start flowing through the main inductor. When the switch must be reversed, the diode carries the current until the switch opens and new current can start flowing in the opposite direction.

The RW2-1209S includes an inbuilt control and protection circuit suitable for industrial applications. Implementing both open and short circuit protection, the control circuit also monitors the input and output voltages ensuring that the output voltage remains tightly regulated over various input voltage conditions. It also includes an inbuilt thermal shutdown circuit, providing protection if the device becomes too hot due to overloading or other permanent faults.

The RW2-1209S/H3/SMD is an efficient, solid state AC/DC converter suitable for a wide range of industrial applications. As a buck converter, it is capable of producing regulated voltages both higher and lower than its input voltage. The device includes a built-in control and protection circuit, ensuring the output voltage and the device remain secure under various input conditions.

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