{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11940473","patent":{"patent_number":"US-11940473","title":"Apparatus and method for compensating for offset in switching current sensing","assignee":null,"inventors":[],"filing_date":"2021-12-02T00:00:00.000Z","publication_date":"2024-03-26T00:00:00.000Z","cpc_codes":["H02M","H02M","H02M","H02M","H02M"],"num_claims":10,"abstract":"The present disclosure relates to an apparatus and method for compensating for an offset in switching current sensing in an improved method using a Rogowski coil and an Op-amp. According to the present disclosure, when a Rogowski current sensor and an Op-Amp integrator are used to sense a switching current of a motor driving inverter, a DC-DC converter, or the like, the fact that an offset value of an output of the integrator varies depending on a duty value of a pulse-width modulation (PWM) control signal is used, so that offset calibration software is applied to automatically generate an offset value table at the beginning of power up of a controller and compensate for a sensed value of the current in real time by referring to the value. As a result, there is no need to perform conventional manual tuning."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Apparatus and method for compensating for offset in switching current sensing","description":"The present disclosure relates to an apparatus and method for compensating for an offset in switching current sensing in an improved method using a Rogowski coil and an Op-amp. According to the presen","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11940473","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-11940473","citation_suggestion":"Patentable. \"Apparatus and method for compensating for offset in switching current sensing\" (US-11940473). https://patentable.app/patents/US-11940473","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11940473","json":"https://patentable.app/api/llm-context/US-11940473","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T06:32:50.559Z"}