{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9627968","patent":{"patent_number":"US-9627968","title":"Step-down chopper type switching power-supply device","assignee":null,"inventors":[],"filing_date":"2015-05-20T00:00:00.000Z","publication_date":"2017-04-18T00:00:00.000Z","cpc_codes":["H02M","H02M","H02M","H02M"],"num_claims":5,"abstract":"A step-down chopper type switching power-supply device includes a step-down chopper circuit including an inductor connected to a switching element connected to a DC power source, a regenerative-voltage detecting circuit, a control circuit controlling the switching element such that regenerative voltage becomes a reference voltage, an auxiliary power supply circuit charging a capacitor by using the regenerative voltage and supplying the voltage of the capacitor as power-supply voltage to the control circuit, and a activation circuit stopping supply of current to the capacitor after activation of the auxiliary power supply circuit, wherein, after activation of the auxiliary power supply circuit, in a case where voltage supplied from the DC power source is equal to or less than a first threshold value, the activation circuit performs control by the voltage supplied from the DC power source, such that current is supplied to the capacitor."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Step-down chopper type switching power-supply device","description":"A step-down chopper type switching power-supply device includes a step-down chopper circuit including an inductor connected to a switching element connected to a DC power source, a regenerative-voltag","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9627968","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-9627968","citation_suggestion":"Patentable. \"Step-down chopper type switching power-supply device\" (US-9627968). https://patentable.app/patents/US-9627968","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9627968","json":"https://patentable.app/api/llm-context/US-9627968","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T04:17:06.621Z"}