Invention Grant
- Patent Title: Power supply circuit
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Application No.: US16466586Application Date: 2017-12-18
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Publication No.: US10747247B2Publication Date: 2020-08-18
- Inventor: Takafumi Saga , Toshiyuki Nagai , Akinori Ohmae
- Applicant: NEW JAPAN RADIO CO., LTD.
- Applicant Address: JP Chuo-Ku, Tokyo
- Assignee: NEW JAPAN RADIO CO., LTD.
- Current Assignee: NEW JAPAN RADIO CO., LTD.
- Current Assignee Address: JP Chuo-Ku, Tokyo
- Agency: Procopio, Cory, Hargreaves & Savitch LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@2cc873d0
- International Application: PCT/JP2017/045326 WO 20171218
- International Announcement: WO2018/117026 WO 20180628
- Main IPC: G05F1/573
- IPC: G05F1/573 ; G05F1/569 ; G05F1/56 ; G05F3/26 ; H02M3/156
Abstract:
A power supply circuit includes an output transistor which adjusts an input voltage and generates an output voltage, an error amplifier which generates a control voltage for the output transistor according to a difference between a feedback voltage corresponding to the output voltage and a reference voltage, an overcurrent protection circuit which controls the error amplifier according to a result of monitoring the control voltage and controls the control voltage so as to drop the output voltage, and an undershoot detection circuit Which detects an undershoot of the output voltage and controls the control voltage for the output transistor so as to suppress the output voltage from dropping.
Public/Granted literature
- US20200073421A1 POWER SUPPLY CIRCUIT Public/Granted day:2020-03-05
Information query
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