{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11522442","patent":{"patent_number":"US-11522442","title":"Power factor of AC-DC off-line power supplies under light load condition","assignee":null,"inventors":[],"filing_date":"2021-07-30T00:00:00.000Z","publication_date":"2022-12-06T00:00:00.000Z","cpc_codes":["H02M","H02M","H02M"],"num_claims":20,"abstract":"Embodiments herein describe control circuitry for operating a PFC converter in an AC-DC power supply under light loading conditions. The embodiments herein improve the power factor by identifying an optimized phase offset (γ) between an AC reference voltage and an AC reference current used to control the PFC converter. In one embodiment, the control circuitry iteratively changes the phase offset between the reference voltage and current and measures its impact on the power factor. The control circuitry then selects the phase offset that results in the best power factor to use when operating the PFC converter under light loading conditions."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Power factor of AC-DC off-line power supplies under light load condition","description":"Embodiments herein describe control circuitry for operating a PFC converter in an AC-DC power supply under light loading conditions. The embodiments herein improve the power factor by identifying an o","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11522442","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-11522442","citation_suggestion":"Patentable. \"Power factor of AC-DC off-line power supplies under light load condition\" (US-11522442). https://patentable.app/patents/US-11522442","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11522442","json":"https://patentable.app/api/llm-context/US-11522442","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T16:57:11.169Z"}