Title:
DC/DC CONVERTER
Document Type and Number:
Japanese Patent JPS5972978
Kind Code:
A
Abstract:
PURPOSE:To enable to operate a DC/DC converter by a drive power source of one type by supplying inputted DC voltage to the power terminal and the reference power terminal of a switching regulator, and supplying the output directly to the power terminal of the regulator. CONSTITUTION:The reference power terminal VR and the power terminal VCC of a switching regulator SWR are respectively connected to an input terminal Ti through diodes D2, D3, and the power terminal VCC is further connected directly to the output terminal To. The regulator SWR first starts operating temporarily by the DC 5V voltage inputted between the input terminal Ti and the ground terminal E, and 12V voltage of the output is further supplied to the regulator SWR to continue the normal operation.
Inventors:
UEKI YOUICHI
ODAGIRI HIROYUKI
ODAGIRI HIROYUKI
Application Number:
JP18114182A
Publication Date:
April 25, 1984
Filing Date:
October 15, 1982
Export Citation:
Assignee:
FUJITSU LTD
International Classes:
H02M3/155; (IPC1-7): H02M3/155
Domestic Patent References:
| JP54155121B | ||||
| JP55169718B |
Attorney, Agent or Firm:
Sadaichi Igita