Title:
Switching-power-supply circuit
Document Type and Number:
Japanese Patent JP6213183
Kind Code:
B2
Abstract:
A switching power supply circuit includes a semiconductor switching element that is ON/OFF-controlled and controls current through an inductance, an output capacitor that stores power delivered from the inductance through a boost diode, a bypass diode that bypasses the inductance and delivers a DC voltage given to the inductance to the output capacitor, and a switching control section that ON/OFF-controls the semiconductor switching element. The switching power supply circuit includes in particular, an operation frequency reducing means that detects variation of the voltage generated on short-circuit of the bypass diode and lowers a switching frequency of the semiconductor switching element.
Inventors:
Sugawara Keito
Application Number:
JP2013241383A
Publication Date:
October 18, 2017
Filing Date:
November 21, 2013
Export Citation:
Assignee:
Fuji Electric Co., Ltd.
International Classes:
H02M3/155; H02M7/12
Domestic Patent References:
| JP2012205394A |
Attorney, Agent or Firm:
Yuji Hoshino
Kazunori Watanabe
Kazunori Watanabe