{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9618955","patent":{"patent_number":"US-9618955","title":"Method and apparatus to increase efficiency in a power factor correction circuit","assignee":null,"inventors":[],"filing_date":"2015-07-21T00:00:00.000Z","publication_date":"2017-04-11T00:00:00.000Z","cpc_codes":["H02M"],"num_claims":12,"abstract":"A power factor correction (PFC) controller includes a driver circuit coupled to vary the switching frequency of the power switch of the PFC converter in response to an input current of a PFC converter and an input voltage of the PFC converter, and to output a third signal to switch the power switch of the PFC converter to control the input current to substantially follow the input voltage. A frequency adjust circuit is coupled to receive an error voltage signal representative of an output of the PFC converter. The frequency adjust circuit is further coupled to output an adjusted error signal to adjust the end of the off time of the power switch of the PFC converter in response to the error voltage signal."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus to increase efficiency in a power factor correction circuit","description":"A power factor correction (PFC) controller includes a driver circuit coupled to vary the switching frequency of the power switch of the PFC converter in response to an input current of a PFC converter","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9618955","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-9618955","citation_suggestion":"Patentable. \"Method and apparatus to increase efficiency in a power factor correction circuit\" (US-9618955). https://patentable.app/patents/US-9618955","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9618955","json":"https://patentable.app/api/llm-context/US-9618955","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T12:47:23.487Z"}