{"id":20230,"date":"2026-10-28T14:20:49","date_gmt":"2026-10-28T06:20:49","guid":{"rendered":"https:\/\/www.wehopower.com\/news\/smps-output-lc-filter-stability-load-step\/"},"modified":"2026-10-28T14:20:49","modified_gmt":"2026-10-28T06:20:49","slug":"smps-output-lc-filter-stability-load-step","status":"publish","type":"news","link":"https:\/\/www.wehopower.com\/tr\/news\/smps-output-lc-filter-stability-load-step\/","title":{"rendered":"Adding an LC Output Filter to an SMPS: Check Ringing, Sensing and Load Steps"},"content":{"rendered":"
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An external LC filter can reduce differential-mode switching ripple at a load, but the added network must be checked with the power supply and load together.<\/strong> Confirm that the exact supply permits the proposed output network and feedback connection. Then compare startup, load-step behavior and ripple at both the supply terminals and the load. A cleaner steady-state waveform alone is insufficient to accept the change.<\/p>\n

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WEHO LRS-350-36<\/a> shown on an equipment-assembly bench. Application illustration combining the product photograph with an AI-assisted environment; it does not depict an LC test. View full-size image<\/a>.<\/figcaption><\/figure>\n

This guide is for OEM engineers considering a filter on the DC output of a finished switching power supply. It provides a review and test method, rather than a universal set of component values. Board-level converter examples illustrate the principles; they do not establish compatibility with a particular WEHO model.<\/p>\n