Inventor
MATSUYAMA TOSHIYUKI
JP14 patents
Patents
14 patentsUS6452364B1Sep 17, 2002
Battery charge control circuit, battery charging device, and battery charge control method
FUJITSU LTD53 citations96
US6420858B1Jul 16, 2002
DC-to-DC converter circuit having a power saving mode
FUJITSU LTD64 citations96
US6400209B1Jun 4, 2002
Switch circuit with back gate voltage control and series regulator
FUJITSU LTD80 citations96
US6194875B1Feb 27, 2001
Controller for DC-DC converter
FUJITSU LTD62 citations96
US6828764B2Dec 7, 2004
Regulator circuit and control method thereof
FUJITSU LTD25 citations92
US6664772B2Dec 16, 2003
DC to DC converter producing output voltage exhibiting rise and fall characteristics independent of load thereon
FUJITSU LTD19 citations92
US6337563B2Jan 8, 2002
DC-DC converter and semicondutor integrated circuit device for DC-DC converter
FUJITSU LTD49 citations92
US6147477ANov 14, 2000
DC to DC converter producing output voltage exhibiting rise and fall characteristics independent of load thereon
FUJITSU LTD32 citations92
US6025706AFeb 15, 2000
Method for controlling the output voltage of a DC-DC converter
FUJITSU LTD32 citations92
US5966003AOct 12, 1999
DC-DC converter control circuit
FUJITSU LTD41 citations92
US6320359B1Nov 20, 2001
DC-DC converter and controller for detecting a malfunction therein
FUJITSU LTD38 citations91
US6674657B2Jan 6, 2004
Overvoltage-protective device for power system, AC/DC converter and DC/DC converter constituting the power system
FUJITSU LTD16 citations83
US6911806B2Jun 28, 2005
DC to DC converter producing output voltage exhibiting rise and fall characteristics independent of load thereon
FUJITSU LTD10 citations74
US7129682B2Oct 31, 2006
DC to DC converter producing output voltage exhibit rise and fall characteristics independent of load thereon
FUJITSU LTD1 citations63