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5.1W non-dimmable, high power factor, non-isolated step-down LED driver designed using LYTSwitch-0 LYT0006D

Overview

This document introduces a highly compact and cost-effective step-down power supply designed using the LYTSwitch-0 series device (LYT0006D). The power supply can operate from an input voltage range of 90 to 132 VAC. The DC bus voltage is high enough to support a 38 V output when using a buck topology. In a buck converter, the output voltage must always be lower than the input voltage. In addition, the output voltage is also limited by the maximum duty cycle of LYTSwitch-0, which also requires that the input voltage must be higher than the output voltage.

Blockdiagram

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-05-08 12:51:05

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