LFA75F-12-SN

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AC/DC converters are devices used to convert alternating current (AC) to direct current (DC). The LFA75F-12-SN is an AC/DC converter in the form of a PCB module, designed for industrial purposes such as die and embedded systems. This AC/DC converter is compliant with the 61558 standard and supports a wide operating temperature range of -25°C to 70°C. It is equipped with a single phase, half-wave rectified or bridge rectified input.

Features

The LFA75F-12-SN AC/DC converter is enclosed in a plastic shell package and comes equipped with a range of features and design amenities that provide users with dependable and efficient performance. It features short-circuit protection and complies with applicable safety requirements. Additionally, its pin and footprint design enables flexible installation. The LFA75F-12-SN offers a power density of 28W/in3, a high efficiency of 85%, a maximum no-load input power of 24W, and an average service life of 50,000 hours.

Specifications

The LFA75F-12-SN AC/DC converter offers a wide array input of 85VAC to 264VAC, with a frequency range of 47-63Hz. It also comes with a maximum output power of 75W, a maximum output voltage of 12V, a maximum output current of 6.25A, and a rated output current of 4A. In addition, this device is equipped with a low no-load input power of 40mW, a maximum efficiency of 85%, and a holdup time of 100ms.

Working Principle

The AC to DC power supply conversion process consists of three main stages: rectification, filtering, and regulation. In the rectification stage, the input AC voltage is passed through a rectifier circuit and converted to a DC voltage. The rectified DC voltage is then passed through a filter stage, where the DC voltage is smoothed and the AC ripple is reduced by a capacitor. In the regulation stage, the output voltage is regulated using a voltage regulator circuit, which is usually a voltage regulator IC.

The LFA75F-12-SN AC/DC converter takes advantage of these three stages to provide an efficient and reliable power supply. It utilizes advanced rectification technology, which ensures full input voltage range compatibility and low output ripple noise. The internal filter stage reduces the electromagnetic interference (EMI) to meet the emissions standards, while the voltage regulator circuit helps maintain a precise output voltage. In addition, the built-in overtemperature and overvoltage protection further ensures the safety and reliability of the system.

Applications

The LFA75F-12-SN AC/DC converter is ideal for applications where reliable and efficient power conversion is preferred, such as automation, security systems, telecom equipment, and various small or medium-sized industrial applications. It is also suitable for use in power supplies for lighting, HVAC systems, and variable-speed motors. Additionally, the device is compatible with alternative energy sources, such as solar, wind, or fuel cell applications.

The combination of a wide operating temperature range, short-circuit protection, and low power consumption makes the LFA75F-12-SN AC/DC converter an ideal solution for a variety of industrial and consumer applications. With its high efficiency and reliability, it is the perfect choice for an efficient and safe power supply system.

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