{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8488337","patent":{"patent_number":"US-8488337","title":"Offline AC-DC controller circuit and a converter comprising the same","assignee":null,"inventors":[],"filing_date":"2012-10-12T00:00:00.000Z","publication_date":"2013-07-16T00:00:00.000Z","cpc_codes":["H02M","H02M","H02M","H02M"],"num_claims":15,"abstract":"An offline AC-DC converter circuits including an overvoltage detection module, a current limiting module, a PWM module and a switch control module coupled to the above modules. The overvoltage detection module, the current limiting module and the PWM module share a common input terminal. The sampled current signal and the sampled voltage signal are provided at the common input terminal by way of time-division multiplexing. With the time-multiplexed terminal, overvoltage detection for the output voltage is performed during the period when the power transistor is cut off and a current through the power transistor is detected during the period when the power transistor conducts. The two signals are input by way of time-division multiplexing, which are not affected by each other. Accordingly, overvoltage in the output voltage can be precisely detected without additional terminals, and thus the overvoltage can be controlled."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Offline AC-DC controller circuit and a converter comprising the same","description":"An offline AC-DC converter circuits including an overvoltage detection module, a current limiting module, a PWM module and a switch control module coupled to the above modules. The overvoltage detecti","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8488337","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-8488337","citation_suggestion":"Patentable. \"Offline AC-DC controller circuit and a converter comprising the same\" (US-8488337). https://patentable.app/patents/US-8488337","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8488337","json":"https://patentable.app/api/llm-context/US-8488337","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T23:02:23.078Z"}