Title:
METHOD FOR DETECTING CURRENT OF DC-DC CONVERTER AND DC-DC CONVERTER USING THE METHOD
Document Type and Number:
Japanese Patent JP2003284328
Kind Code:
A
Abstract:
To provide a method for detecting a current of a DC-DC converter for detecting the current by using a protective MOSFET switched on in a normal time, and to provide the DC-DC converter.
The method for detecting the current of the DC-DC converter having the protective field effect transistor (MOSFET) that is switched on in a normal time and disconnects a circuit at an abnormal time comprises steps of applying a predetermined on-gate voltage between a gate and a source of the MOSFET, and calculating a drain current Id of the MOSFET according to a voltage difference in applying the on-gate voltage Vds between the drain and the source of the MOSFET.
Inventors:
NAKAHARA KAZUHITO
UEKI KOICHI
TAKAHASHI FUMITO
USUDA TAKAYUKI
UEKI KOICHI
TAKAHASHI FUMITO
USUDA TAKAYUKI
Application Number:
JP2002082350A
Publication Date:
October 03, 2003
Filing Date:
March 25, 2002
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD
International Classes:
G05F1/10; H02M3/155; (IPC1-7): H02M3/155; G05F1/10
Attorney, Agent or Firm:
Shoji Shinobe