Inventor
SAGA RYOUHEI
JP9 patents
⚠️ This page may combine multiple inventors who share the name “SAGA RYOUHEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
7 patentsUS6489756B2Dec 3, 2002
DC-DC converter with switchable control mode
HITACHI LTD63 citations96
US6580597B2Jun 17, 2003
Voltage regulator module for micro processor and CPO using a super capacitor
HITACHI LTD48 citations95
US6643152B2Nov 4, 2003
DC power supply device
HITACHI LTD26 citations92
US6603671B2Aug 5, 2003
Synchronized rectifier voltage step down DC-DC converter and control circuit therefor
HITACHI LTD22 citations92
US6507507B2Jan 14, 2003
DC power supply device
HITACHI LTD41 citations92
US6381152B1Apr 30, 2002
Method of driving semiconductor switching device in non-saturated state and power supply apparatus containing such a switching device
HITACHI LTD32 citations92
US6567261B2May 20, 2003
DC-DC step-down converter with super capacitor
HITACHI LTD37 citations91