Title:
発振回路およびスイッチング電源
Document Type and Number:
Japanese Patent JP5679681
Kind Code:
B2
Abstract:
A first capacitor is arranged such that the electric potential at a first terminal is fixed. A first discharging circuit discharges the first capacitor at a timing that corresponds to a cyclic synchronization signal received from an external circuit. A first comparator compares the voltage at a second terminal of the first capacitor with a predetermined threshold voltage, and generate a judgment signal that corresponds to the comparison result. A charging circuit generates a charging current the current value of which is adjusted according to the level of the judgment signal at a timing that corresponds to the synchronization signal, and supplies the charging current thus generated to the first capacitor.
Inventors:
中田 健司
梅木 伸彰
梅木 伸彰
Application Number:
JP2010050632A
Publication Date:
March 04, 2015
Filing Date:
March 08, 2010
Export Citation:
Assignee:
ローム株式会社
International Classes:
H03K4/06; H02M3/155
Attorney, Agent or Firm:
Sakaki Morishita
True house Big tree
True house Big tree
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