Title:
INTEGRATED CIRCUIT AND POWER SUPPLY CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2020/090199
Kind Code:
A1
Abstract:
In order to generate an output voltage having a target level from an input predetermined AC voltage, this integrated circuit drives a transistor for, on the basis of an inductor current flowing through an inductor to which the voltage from a rectifier circuit for rectifying the predetermined AC voltage is applied and the output voltage, controlling the inductor current and is provided with: a first comparison circuit for comparing the current value of the inductor current with a predetermined current value; a timer circuit for measuring an elapsed time from when the first comparison circuit outputs a comparison result indicating that the current value of the inductor current is less than the predetermined current value; a second comparison circuit for comparing the level of the output voltage with a first level lower than the target level; and a signal output circuit which, when the elapsed time reaches a predetermined time and the second comparison circuit outputs a comparison result indicating that the level of the output voltage is lower than the first level, outputs a first signal indicating that the predetermined AC voltage is not input to the rectifier circuit.
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JPS5812575 | AC/DC CONVERTER |
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Inventors:
ENDO YUTA (JP)
Application Number:
PCT/JP2019/032981
Publication Date:
May 07, 2020
Filing Date:
August 23, 2019
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD (JP)
International Classes:
H02M7/12; H02M3/155
Domestic Patent References:
WO2017010031A1 | 2017-01-19 | |||
WO2014188711A1 | 2014-11-27 |
Foreign References:
JP2015035931A | 2015-02-19 | |||
JPH11297483A | 1999-10-29 | |||
JP2014023194A | 2014-02-03 | |||
JP2014082924A | 2014-05-08 | |||
JP2010154639A | 2010-07-08 | |||
JP2003199348A | 2003-07-11 | |||
JP2018113175A | 2018-07-19 |
Attorney, Agent or Firm:
ISSHIKI & CO. (JP)
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