Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9301278 | Power supply control circuit, power supply device, electronic apparatus, and power supply control method | — | 2016-03-29 |
| 8760133 | Linear drop-out regulator circuit | Hidenobu Ito, Kwok Fai Hui, Yat Fong Yung | 2014-06-24 |
| 8406364 | Fractional frequency divider PLL device and control method thereof | — | 2013-03-26 |
| 8248046 | DC-DC converter for pulse frequency modulation control and power supply system | — | 2012-08-21 |
| 8233257 | Power supply circuit, overcurrent protection circuit for the same, and electronic device | Hidenobu Ito, Kwok Fai Hui, Toshihiko Kasai, Katsuyuki Yasukouchi | 2012-07-31 |
| 7957165 | DC-DC converter with a plurality of soft-start control circuits | Hidekiyo Ozawa | 2011-06-07 |
| 7948219 | Control circuit of synchronous rectification type power supply unit, synchronous rectification type power supply unit and control method thereof | Hidekiyo Ozawa | 2011-05-24 |
| 7944190 | Control circuit of power supply unit which controls output power of external power supply based upon current from the external power supply, power supply unit and control method thereof | Hidekiyo Ozawa | 2011-05-17 |
| 7936156 | DC-DC converter and control method thereof | Takashi Matsumoto, Ryuta Nagai, Shoji Tajiri | 2011-05-03 |
| 7916503 | DC-DC converter, power supply voltage supplying method, and power supply voltage supplying system | Takashi Matsumoto, Ryuta Nagai | 2011-03-29 |
| 7876076 | Circuit for preventing through current in DC-DC converter | — | 2011-01-25 |
| 7843179 | Control circuit for synchronous rectifier-type DC-DC converter, synchronous rectifier-type DC-DC converter and control method thereof | Takashi Matsumoto, Ryuta Nagai | 2010-11-30 |
| 7821236 | Control circuit for detecting a reverse current in a DC-DC converter | Takashi Matsumoto, Ryuta Nagai | 2010-10-26 |
| 7781909 | Control circuit of power supply, power supply and control method thereof | Hidekiyo Ozawa | 2010-08-24 |
| 7777473 | DC-DC converter and control circuit for DC-DC converter | Chikara Tsuchiya, Hidenobu Ito | 2010-08-17 |
| 7733074 | Control circuit of current mode DC-DC converter and control method of current mode DC-DC converter | Takashi Matsumoto, Ryuta Nagai | 2010-06-08 |
| 7714557 | DC-DC converter, power supply system, and power supply method | — | 2010-05-11 |
| 7705483 | DC-DC converter control circuit, DC-DC converter, power supply unit, and DC-DC converter control method | Hidekiyo Ozawa | 2010-04-27 |
| 7609039 | Controller and control method for DC-DC converter | — | 2009-10-27 |
| 7545054 | DC linear regulator single controller with plural loads | Hidekiyo Ozawa, Toru Nakamura | 2009-06-09 |
| 7456623 | DC-DC converter and control circuit for DC-DC converter | Chikara Tsuchiya, Hidenobu Ito | 2008-11-25 |
| 7423415 | DC-DC converter and its control method, and switching regulator and its control method | Hidekiyo Ozawa | 2008-09-09 |
| 7388438 | ΣΔ modulator for PLL circuit | — | 2008-06-17 |
| 7298117 | Step-up (boost) DC regulator with two-level back-bias switch gate voltage | Hidekiyo Ozawa, Shoji Tajiri, Toshihiko Kasai | 2007-11-20 |
| 7279870 | DC-DC converter and method of controlling DC-DC converter | Hidekiyo Ozawa | 2007-10-09 |