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Patent Searching and Data


Title:
POWER-SUPPLY SWITCHING CIRCUIT AND ARTIFICIAL HEART SYSTEM
Document Type and Number:
WIPO Patent Application WO/2014/061436
Kind Code:
A1
Abstract:
A power-supply switching circuit (100) according to the present invention provides switching between a first power supply and a second power supply at least one of which is a battery power supply, to connect the switched power supply to a load, the power-supply switching circuit comprising: first and second power-supply connection units configured to allow for the connection to the first and second power supplies; a load connection unit configured to allow for the connection to the load; first and second switching units provided between each power-supply connection unit and the load connection unit; and a switching control unit for performing switching control for each switch unit. Each switch unit has a plurality of FETs serially connected in the same direction to direct the cathode side of the body diode to the load connection side, and the number of the FETs is set so that the total of forward drop voltages of the body diode in each FET exceeds the difference between the full charge voltage and the discharge voltage of the battery power supply. The power-supply switching circuit according to the present invention provides highly reliable switching between power supplies.

Inventors:
SHINOHARA KAZUTO (JP)
Application Number:
PCT/JP2013/076621
Publication Date:
April 24, 2014
Filing Date:
September 30, 2013
Export Citation:
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Assignee:
SUN MEDICAL TECHNOLOGY RES CORP (JP)
International Classes:
H02J9/06; A61M1/10; H02J7/00
Foreign References:
JP2002112469A2002-04-12
JPH10320081A1998-12-04
JP2004302665A2004-10-28
JPH10336912A1998-12-18
JP2003533159A2003-11-05
JPS58136352A1983-08-13
JP2012005287A2012-01-05
JPH0919085A1997-01-17
JPH10320081A1998-12-04
JP2008086100A2008-04-10
JP2008099404A2008-04-24
JP2012005208A2012-01-05
Other References:
See also references of EP 2911271A4
Attorney, Agent or Firm:
MATSUO, NOBUTAKA (JP)
Masatake Matsuo (JP)
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