LGA150A-5-SNY

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AC DC Converters have been industry standard since the 1950s, consisting of inductors, capacitors, resistors, diodes, andrectifiers. During the past few decades, efficient AC/DC power electronic converters have become increasingly popular in applications ranging from consumer electronics to industrial and automotive. From a macro perspective, an AC/DC converter converts power from an AC voltage source to a DC voltage source, or from a DC voltage source to an AC voltage source.

The AC/DC converters are grouped into 3 main categories based on their topology—Isolated topology, Non- Isolated topology, and Resonant topology. This article focuses on the Isolated AC/DC converter, LGA150A-5-SNY, and its application fields and working principle.

The LGA150A-5-SNY is an isolated AC/DC converter and is built primarily for industrial applications including medical-grade equipment, industrial robots, and power supplies for automotive. The converter contains an isolated full-bridge rectifier and a Buck regulator to provide a regulated output voltage of 3.3-15V with a maximum output current of 150A. The converter is highly efficient and can work over an input voltage range of 85~500VAC without the need of external components. The converter contains a built-in active clamp circuit to protect the output voltage from being over-driven. Additionally, it is equipped with various in-built features such as over-temperature protection, over-voltage protection, over-current protection, and output short-circuit protection. The converter is built as an encapsulated and shielded block that is lightweight with a dimension of only 150.5mm x 111mm x 126.5 mm.

The working principle of the LGA150A-5-SNY is as follows: the converter takes AC power from the mains supply and use the full-bridge rectifier to make the incoming voltage into a DC voltage. The DC voltage is then passed through the Buck regulator, which is made up of a power transistor, inductor, and a diode. The Buck regulator works by switching the power transistor, which then causes an alternating current (AC) in the inductor that is proportional to the current in the inductor, thus, regulating the output voltage. The diode will allow the current to flow in one direction only and will not allow it to flow back to the Buck regulator. Finally, the output voltage is smoothed by the capacitor to reduce the ripple noise.

To conclude, the main feature of the LGA150A-5-SNY is its ability to convert AC to DC power. It is an efficient device and can be used in various industrial applications. The isolated design provides increased safety and reliability and it is easy to use. With its various over-voltage, over-temperature, over-current and output short-circuit protection features, it is an ideal choice for modern industrial applications.

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