LFA240F-48-SNC

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The LFA240F-48-SNC AC DC converter is one of the most popular DC/DC converters among power management applications requiring wide input ranges and reliable operation. This unit offers a wide 10 to 48 VDC input range with fairly low Ripple & Noise of 40mV p-p. With a 6V to 64V output range and a continuous power output of 240W, this converter is suitable for a wide range of large applications, from servers, networking and automotive sectors.

Application Field: The LFA240F-48-SNC can be used in a variety of power management applications. It can be used in automotive applications, such as electric/hybrid vehicles, for charging and backup power needs. It can also be applied in networking applications, like telecommunications and industrial level computer systems, in order to convert and provide cleaner power. Furthermore, it can be utilized in server based applications, such as gaming, web hosting, and virtualization.

Working Principle: The LFA240F-48-SNC AC DC converter consists of a rectifier, an input choke, two buck switching controllers, two MOSFETs, a transformer, two current-mode control loops, two output capacitors, and a communications interface port. When the AC input voltage (110 - 220 VAC or 130 - 250 VAC depending on the model) is applied to the input, it is converted into DC voltage by the rectifier. The input choke further filters out high-frequency noises in the input, ensuring a more stable power supply. The two buck switching controllers switch the two MOSFETs, one to step down the voltage and one to step up the voltage in order to reach the requested 6 to 64 VDC output range. The transformer provides an isolation between the input and the output, and it provides an output voltage based on the requested output voltage. The two current-mode control loops ensure that the output voltage is in regulation by controlling the duty cycle of the MOSFETs and the output current. Finally, the output capacitors filter any remaining high-frequency noises.

The LFA240F-48-SNC AC DC converter provides a wide input range, low ripple & noise, high efficiency, short circuit protection, and easy monitoring and control. This makes it the perfect choice for a wide range of power management applications, from automotive to server based applications. It is designed to ensure reliable operation and superior performance when powering high-end applications.

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