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DER-234 - Efficient 18 W power supply using small transformer core size

DER-234 - High Efficiency 18 W Power Supply Using a Small Transformer Core Size

Overview

Summary and Features Low component count Very low no-load input power (<150 mW at 230 VAC) High active mode efficiency (81%) Easily meets ENERGY STAR 2.0 80% efficiency requirements Easily meets the U.S. Energy Independence and Security Act of 2007 76% of requirements easily met for EU CoC v4 and EuP Tier 2 80% of requirements Very high efficiency in both standby and sleep modes Excellent transient load response Hysteretic thermal overload protection with auto-recovery Meets single point failure limited power requirements (<100 VA) Power Integrations eSIP thin package can meet thermal specifications and radiated EMI without potting, QP margin >6dB

Blockdiagram

Design Files

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Update:2025-06-23 08:40:22

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