SWT30-522

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SWT30-522 AC/DC converters provide a high voltage for commercial applications. This type of converter is used to convert 120V AC input voltage to a DC input voltage (approximately 5V and up).

The SWT30-522 ac-dc converter is composed of an IGBT switching circuit and an IGBT sensing circuit. It uses the hysteresis principle of operation instead of a voltage regulator to control the output voltage. The hysteresis principle is based on a hysteresis (or dead-band) around the set point. When the output voltage is lower than the set point, the IGBT switching circuit is energized and the IGBT sensing circuit is de-energized. When the output voltage is higher than the set point, the IGBT sensing circuit is energized and the IGBT switching circuit is de-energized.

The SWT30-522 AC/DC converter has a soft-start feature that prevents harsh current inrush when the converter is first powered on. The output voltage is slowly ramped up over a few milliseconds until it reaches the desired value to prevent drastic fluctuations in current draw. This feature also reduces the amount of inrush current draw when the converter is switched off and on again, allowing for more efficient operation.

When the output voltage is set to the desired value, the SWT30-522 AC/DC converter will maintain the selected voltage by automatically adjusting the IGBT switching and sensing circuits. This is done by monitoring the output voltage and adjusting the duty cycle of the switching circuit accordingly. The sensing circuit monitors the current draw to prevent overloading the IGBTs.

The converter is capable of a fast line and load transient response, making it ideal for use in critical applications. The current limit feature ensures that the IGBTs are not overloaded, and the over-voltage protection feature ensures that the output voltage does not reach an unsafe level. The SWT30-522 AC/DC converter is also equipped with over-temperature protection, which shuts down the converter when the internal temperature reaches a certain level.

In summary, the SWT30-522 AC/DC converter is an efficient and reliable solution for commercial applications that require a high voltage, fast line and load transient response, and over-current protection. The soft-start feature helps to reduce current inrush and the over-voltage protection feature ensures that the output voltage remains safe. The converter is also equipped with an over-temperature protection feature that prevents the IGBTs from being overloaded.

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