H-bridge driver

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6753717
APP PUB NO 20020005748A1
SERIAL NO

09793394

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An H-bridge driver has a drive signal generating circuit for generating a square-wave signal as a drive signal. The H-bridge driver also has a waveform shaping circuit for blunting the waveform of the drive signal at the rising and trailing edges thereof. The waveform shaping circuit has a first circuit for generating, in a rising period of the square-wave signal fed thereto, a first current having a positive peak at the center of the rising period, a second circuit for generating, in a trailing period of the square-wave signal fed thereto, a second current having a negative peak at the center of the trailing period, and a capacitor to which the first and second currents are fed. The waveform shaping circuit outputs the voltage across the capacitor as its output voltage.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ROHM CO., LTD.KYOTO3183

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Inoue, Koichi Kyoto, JP 107 709
Osuka, Takao Kyoto, JP 2 8

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
4403375 Tying device 15 1982
 
Minnesota Mining and Manufacturing Company (1)
* 5243472 Series resonant AC erase head drive circuit 4 1991
 
ROSEMOUNT INC. (1)
* 5530639 Bridge pulse controlled constant current driver for magnetic flowmeter 14 1995
 
LUCENT TECHNOLOGIES INC. (1)
* 6229273 Actuator driver circuit 18 1999
 
Siliconix (Taiwan) Ltd. (1)
* 4535203 Bridge rectifier circuit 34 1983
 
SGS-THOMSON MICROELECTRONICS, INC. (1)
* 5631527 Voice coil motor feedback control circuit 13 1994
 
SGS-Thomson Microelectronics S.p.A. (1)
* 4950919 MOS-transistor bridge circuit 10 1988
 
THOMSON SEMICONDUCTEURS, 101, BLD MURAT 75016 PARIS, FRANCE (1)
* 4805214 Digital signal transmitting circuit for telephone network 6 1987
 
NEC CORPORATION (1)
* 5057720 Output buffering H-bridge circuit 14 1989
 
FUJITSU MICROELECTRONICS LIMITED (1)
* 5132563 LSI gate array having reduced switching noise 26 1991
 
STMICROELECTRONICS S.R.L. (1)
* 5896057 Diagnostic power driver circuit 7 1997
 
TEXAS INSTRUMENTS INCORPORATED (3)
* 5257175 Analog control of inductive flyback voltages in a full bridge circuit 21 1992
* 6147545 Bridge control circuit for eliminating shoot-through current 23 1996
* 6262632 Concept and method to enable filterless, efficient operation of Class-D amplifiers 33 1999
 
UNISYS CORPORATION (1)
* 6617913 Self-latching H-bridge system and apparatus 15 2001
 
STMICROELECTRONICS, INC. (3)
* 6124751 Boost capacitor for an H-bridge integrated circuit motor controller having matching characteristics with that of the low-side switching devices of the bridge 16 1997
* 6052017 Method and circuit for enabling rapid flux reversal in the coil of a write head associated with a computer disk drive, or the like 31 1997
* 6259305 Method and apparatus to drive the coil of a magnetic write head 14 1999
 
NEC ELECTRONICS CORPORATION (1)
* 6388855 Transistor protecting circuit with enhancing circuit for H bridge circuit 3 2000
 
AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD. (1)
* 6034537 Driver circuits 6 1997
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
NXP B.V. (1)
* 2006/0066,352 Low-voltage, low-skew differential transmitter 3 2004
 
PANASONIC CORPORATION (1)
* 2008/0157,830 TRIANGLE OSCILLATOR AND PULSE WIDTH MODULATOR 3 2007
 
KONINKLIJKE PHILIPS ELECTRONICS N.V. (1)
* 7616046 System comprising an electrical bridge for generating an electrical signal for a load and a control unit for such a system 1 2002
 
APEX MICROTECHNOLOGY, INC. (4)
* 7292087 Power supplies for driving H-bridges 3 2006
* 2006/0207,498 Power supplies for driving H-bridges 0 2006
7477088 Power supplies for driving h-bridges 0 2007
* 2008/0061,861 POWER SUPPLIES FOR DRIVING H-BRIDGES 0 2007
 
ONKYO CORPORATION (1)
* 7102405 Pulse-width modulation circuit and switching amplifier using the same 7 2004
* Cited By Examiner