Title:
スイッチング電源装置
Document Type and Number:
Japanese Patent JP6938854
Kind Code:
B2
Abstract:
A control IC includes a VS voltage detection circuit that indirectly detects input voltage, by utilizing a fact that a voltage of a VS terminal of a reference potential of a high side drive circuit changes to a voltage equivalent to the input voltage when a high side drive signal is output from a control circuit to cause the high side drive circuit to turn on a high side switching element. The VS voltage detection circuit determines the level of the input voltage by sampling the VS terminal voltage at a time point that is delayed by a predetermined time from a rising edge of the high side drive signal, and supplies the determined level to the control circuit.
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Inventors:
Chen Kenichi
Application Number:
JP2016094717A
Publication Date:
September 22, 2021
Filing Date:
May 10, 2016
Export Citation:
Assignee:
Fuji Electric Co., Ltd.
International Classes:
H02M3/28
Domestic Patent References:
| JP2014124090A | ||||
| JP2012125107A | ||||
| JP2014212642A | ||||
| JP2006067667A | ||||
| JP2002084742A |
Attorney, Agent or Firm:
Fuso International Patent Office