Kouhei Yamada

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
AC input voltage interruption detection method and circuit
- Patent number 9,778,291
- Issue date Oct 3, 2017
- Fuji Electric Co., Ltd.
- Kouhei Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
DC-DC converter control method and DC-DC converter control circuit
- Patent number 9,124,254
- Issue date Sep 1, 2015
- Fuji Electric Co., Ltd.
- Kouhei Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Step-up switching power supply
- Patent number 8,928,294
- Issue date Jan 6, 2015
- Fuji Electric Co., Ltd.
- Kouhei Yamada
- G05 - CONTROLLING REGULATING
Information Patent Grant
DC-DC converter control circuit and control method
- Patent number 8,878,508
- Issue date Nov 4, 2014
- Fuji Electric Co., Ltd.
- Kouhei Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Overvoltage threshold control system of DC to DC converter
- Patent number 8,823,351
- Issue date Sep 2, 2014
- Fuji Electric Co., Ltd.
- Kouhei Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Voltage-to-current converter circuit
- Patent number 8,648,624
- Issue date Feb 11, 2014
- Fuji Electric Co., Ltd.
- Kouhei Yamada
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Comparator circuit with current mirror
- Patent number 8,598,914
- Issue date Dec 3, 2013
- Fuji Electric Co., Ltd.
- Kenichi Nishijima
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
DC-DC converter
- Patent number 8,471,540
- Issue date Jun 25, 2013
- Fuji Electric Co., Ltd.
- Kouhei Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Level shift circuit with noise blocking transmission circuit
- Patent number 8,253,472
- Issue date Aug 28, 2012
- Fuji Electric Co., Ltd.
- Kenichi Nishijima
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Switching power supply system with reduced current consumption at l...
- Patent number 8,174,854
- Issue date May 8, 2012
- Fuji Electric Co., Ltd.
- Satoshi Sugahara
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Integrated circuit and DC-DC converter formed by using the integrat...
- Patent number 8,059,437
- Issue date Nov 15, 2011
- Fuji Electric Systems Co., Ltd.
- Kouhei Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
DC-DC converter and DC-DC power conversion method employing overcur...
- Patent number 8,013,585
- Issue date Sep 6, 2011
- Fuji Electric Systems Co., Ltd.
- Kouhei Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Control circuit of DC-DC converter with synchronous rectifier adjus...
- Patent number 7,906,942
- Issue date Mar 15, 2011
- Fuji Electric Systems Co., Ltd.
- Satoshi Sugahara
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Reverse current stopping circuit of synchronous rectification type...
- Patent number 7,872,461
- Issue date Jan 18, 2011
- Fuji Electric Device Technology Co., Ltd.
- Kouhei Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
DC-DC converter
- Patent number 7,812,578
- Issue date Oct 12, 2010
- Fuji Electric Systems Co., Ltd.
- Satoshi Sugahara
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Overcurrent detecting circuit and reference voltage generating circuit
- Patent number 7,652,861
- Issue date Jan 26, 2010
- Fuji Electric Device Technology Co., Ltd.
- Kouhei Yamada
- G05 - CONTROLLING REGULATING
Information Patent Grant
Series regulator and differential amplifier circuit thereof
- Patent number 7,492,137
- Issue date Feb 17, 2009
- Fuji Electric Device Technology Co., Ltd.
- Kouhei Yamada
- G05 - CONTROLLING REGULATING
Information Patent Grant
DC to DC converter and voltage detecting circuit and current detect...
- Patent number 7,408,390
- Issue date Aug 5, 2008
- Fuji Electric Device Technology Co., Ltd.
- Kouhei Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
AC INPUT VOLTAGE INTERRUPTION DETECTION METHOD AND CIRCUIT
- Publication number 20140347034
- Publication date Nov 27, 2014
- Fuji Electric Co., Ltd.
- Kouhei Yamada
- G01 - MEASURING TESTING
Information Patent Application
STEP-UP SWITCHING POWER SUPPLY
- Publication number 20130241512
- Publication date Sep 19, 2013
- Fuji Electric Co., Ltd.
- Kouhei YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
VOLTAGE-TO-CURRENT CONVERTER CIRCUIT
- Publication number 20120286827
- Publication date Nov 15, 2012
- Fuji Electric Co., Ltd.
- Kouhei YAMADA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
DC-DC CONVERTER CONTROL METHOD AND DC-DC CONVERTER CONTROL CIRCUIT
- Publication number 20120268093
- Publication date Oct 25, 2012
- Fuji Electric Co., Ltd.
- Kouhei YAMADA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
DC-DC CONVERTER CONTROL CIRCUIT AND CONTROL METHOD
- Publication number 20120223690
- Publication date Sep 6, 2012
- Fuji Electric Co., Ltd.
- Kouhei YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CONTROL SYSTEM OF DC TO DC CONVERTER
- Publication number 20120212205
- Publication date Aug 23, 2012
- Fuji Electric Co., Ltd.
- Kouhei YAMADA
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
COMPARATOR CIRCUIT
- Publication number 20110298497
- Publication date Dec 8, 2011
- FUJI ELECTRIC CO., LTD.
- Kenichi NISHIJIMA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Level shift circuit
- Publication number 20110043269
- Publication date Feb 24, 2011
- FUJI ELECTRIC SYSTEMS CO., LTD.
- Kenichi Nishijima
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Reverse current stopping circuit of synchronous rectification type...
- Publication number 20090295350
- Publication date Dec 3, 2009
- Fuji Electric Device Technology Co., LTD.
- Kouhei Yamada
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
DC-DC CONVERTER
- Publication number 20090096436
- Publication date Apr 16, 2009
- Fuji Electric Device Technology Co., LTD.
- Satoshi SUGAHARA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CONTROL CIRCUIT AND CONTROLLING METHOD OF SWITCHING POWER SUPPLY SY...
- Publication number 20080247198
- Publication date Oct 9, 2008
- Fuji Electric Device Technology Co., LTD.
- Satoshi SUGAHARA
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
DC-DC CONVERTER
- Publication number 20080231244
- Publication date Sep 25, 2008
- Fuji Electric Device Technology Co., LTD.
- Kouhei YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Integrated circuit and DC-DC converter formed by using the integrat...
- Publication number 20080068867
- Publication date Mar 20, 2008
- Kouhei Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Control circuit of DC-DC converter and control method thereof
- Publication number 20080049473
- Publication date Feb 28, 2008
- Fuji Electric Device Technology Co., LTD.
- Satoshi Sugahara
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
DC-DC converter
- Publication number 20080024104
- Publication date Jan 31, 2008
- Fuji Electric Device Technology Co., LTD.
- Kouhei Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Overcurrent detecting circuit and reference voltage generating circuit
- Publication number 20070064367
- Publication date Mar 22, 2007
- Fuji Electric Device Technology Co., LTD.
- Kouhei Yamada
- G05 - CONTROLLING REGULATING
Information Patent Application
Series regulator and differential amplifier circuit thereof
- Publication number 20070063686
- Publication date Mar 22, 2007
- Fuji Electric Device Technology Co., Ltd.
- Kouhei Yamada
- G05 - CONTROLLING REGULATING
Information Patent Application
DC to DC converter and voltage detecting circuit and current detect...
- Publication number 20060261860
- Publication date Nov 23, 2006
- Fuji Electric Device Technology Co., Ltd.
- Kouhei Yamada
- H03 - BASIC ELECTRONIC CIRCUITRY

Kouhei Yamada

Person

Patents Grantslast 30 patents

AC input voltage interruption detection method and circuit

DC-DC converter control method and DC-DC converter control circuit

Step-up switching power supply

DC-DC converter control circuit and control method

Overvoltage threshold control system of DC to DC converter

Voltage-to-current converter circuit

Comparator circuit with current mirror

DC-DC converter

Level shift circuit with noise blocking transmission circuit

Switching power supply system with reduced current consumption at l...

Integrated circuit and DC-DC converter formed by using the integrat...

DC-DC converter and DC-DC power conversion method employing overcur...

Control circuit of DC-DC converter with synchronous rectifier adjus...

Reverse current stopping circuit of synchronous rectification type...

DC-DC converter

Overcurrent detecting circuit and reference voltage generating circuit

Series regulator and differential amplifier circuit thereof

DC to DC converter and voltage detecting circuit and current detect...

Patents Applicationslast 30 patents

AC INPUT VOLTAGE INTERRUPTION DETECTION METHOD AND CIRCUIT

STEP-UP SWITCHING POWER SUPPLY

VOLTAGE-TO-CURRENT CONVERTER CIRCUIT

DC-DC CONVERTER CONTROL METHOD AND DC-DC CONVERTER CONTROL CIRCUIT

DC-DC CONVERTER CONTROL CIRCUIT AND CONTROL METHOD

CONTROL SYSTEM OF DC TO DC CONVERTER

COMPARATOR CIRCUIT

Level shift circuit

Reverse current stopping circuit of synchronous rectification type...

DC-DC CONVERTER

CONTROL CIRCUIT AND CONTROLLING METHOD OF SWITCHING POWER SUPPLY SY...

DC-DC CONVERTER

Integrated circuit and DC-DC converter formed by using the integrat...

Control circuit of DC-DC converter and control method thereof

DC-DC converter

Overcurrent detecting circuit and reference voltage generating circuit

Series regulator and differential amplifier circuit thereof

DC to DC converter and voltage detecting circuit and current detect...