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DER-507 - 175 mW constant voltage, universal input, non-isolated buck converter

DER-507 - 175 mW Constant Voltage, Universal Input, Non-Isolated Buck Converter

Overview

This engineering report describes a buck converter power supply designed to provide a nominal output voltage of 5 V over a wide input voltage range from 85 VAC to 265 VAC at a 35 mA load. It utilizes the LNK3202D from the LinkSwitchTM-TN2 series of devices. LinkSwitch-TN2 ICs are specifically designed to replace all linear and capacitively fed (capacitive dropper) non-isolated power supplies in the output current range below 360 mA at the same system cost while providing higher performance and energy efficiency. The DER-507 provides a single 5 V step-down output. A key design goal is to provide a low-cost solution for adapter applications. This file contains power supply specifications, schematics, bill of materials, transformer documentation, printed circuit layout, performance and test data

Blockdiagram

Design Files

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Update:2025-06-19 00:23:01

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