Inventor · disambiguated record
Indumini Ranmuthu
Also filed as: RANMUTHU INDUMINI · RANMUTHU INDUMINI W · RANMUTHU INDUMINI WIJAYANAYAKE
49 granted patents·8 pending applications·304 citations·filing 1998–2025
98Inventor score
Files withTEXAS INSTRUMENTS INC47LI SHENGYUAN3ESCOBAR-BOWSER PRISCILLA2DEAN DOUGLAS WARREN1DOI AKIHIKO1
Top patents by PatentIndex Score
57 records- 0199US9806607B2Circuit for controlling a power supply voltage for a high-side gate driverTEXAS INSTRUMENTS INC·Filed 2015·Granted Oct 31, 2017·48 cites·17 claims
- 0293US7375912B2Disk drive fly height control based on constant power dissipation in read/write head heatersTEXAS INSTRUMENTS INC·Filed 2006·Granted May 20, 2008·26 cites·18 claims
- 0392US11791650B2Multiple output charging system and controllerTEXAS INSTRUMENTS INC·Filed 2020·Granted Oct 17, 2023·3 cites·18 claims
- 0491US9870984B2Power field-effect transistor (FET), pre-driver, controller, and sense resistor integration for multi-phase power applicationsTEXAS INSTRUMENTS INC·Filed 2015·Granted Jan 16, 2018·7 cites·21 claims
- 0588US7642819B1High speed current mode write driverTEXAS INSTRUMENTS INC·Filed 2008·Granted Jan 5, 2010·9 cites·17 claims
- 0688US6917484B2Damping resistor boost writer architectureTEXAS INSTRUMENTS INC·Filed 2003·Granted Jul 12, 2005·24 cites·22 claims
- 0787US6831800B2Boost system and method to facilitate driving a loadTEXAS INSTRUMENTS INC·Filed 2002·Granted Dec 14, 2004·21 cites·25 claims
- 0887US6621649B1Write-to-read switching improvement for differential preamplifier circuits in hard disk drive systemsTEXAS INSTRUMENTS INC·Filed 2000·Granted Sep 16, 2003·24 cites·25 claims
- 0985US2025343434A1Mutliple output charging system and controllerTEXAS INSTRUMENTS INC·Filed 2025·Application pending·0 cites
- 1081US8699534B2Laser diode driver with wave-shape controlTEXAS INSTRUMENTS INC·Filed 2013·Granted Apr 15, 2014·4 cites·3 claims
- 1180US6532127B1Differential voltage bias, voltage sense preamplifier architectureTEXAS INSTRUMENTS INC·Filed 2000·Granted Mar 11, 2003·14 cites·14 claims
- 1280US6490112B1Supply and method for providing differential positive supply voltages to a load with reduced common mode voltagesTEXAS INSTRUMENTS INC·Filed 2001·Granted Dec 3, 2002·15 cites·19 claims
- 1380US6404579B1Current bias voltage sense single ended preamplifierTEXAS INSTRUMENTS INC·Filed 2000·Granted Jun 11, 2002·16 cites·4 claims
- 1479US12362589B2Multiple output charging system and controllerTEXAS INSTRUMENTS INC·Filed 2023·Granted Jul 15, 2025·0 cites·18 claims
- 1576US11018663B2Linear switch circuits and methodsTEXAS INSTRUMENTS INC·Filed 2020·Granted May 25, 2021·1 cites·22 claims
- 1675US2025054886A1Semiconductor structure and method for wafer scale chip packageTEXAS INSTRUMENTS INC·Filed 2024·Application pending·0 cites
- 1774US6856195B2Preamplifier system with selectable input impedanceTEXAS INSTRUMENTS INC·Filed 2002·Granted Feb 15, 2005·19 cites·20 claims
- 1873US7453659B2Circuit and method for write current driverTEXAS INSTRUMENTS INC·Filed 2006·Granted Nov 18, 2008·2 cites·15 claims
- 1973US6366420B1Method of restoring the orientation of a pinned layer of a magnetoresistive headTEXAS INSTRUMENTS INC·Filed 2000·Granted Apr 2, 2002·9 cites·9 claims
- 2071US8289832B2Input signal processing systemLI SHENGYUAN·Filed 2009·Granted Oct 16, 2012·2 cites·20 claims
- 2171US8218257B2Disk drive with multiple level power reduction during writeESCOBAR-BOWSER PRISCILLA·Filed 2007·Granted Jul 10, 2012·2 cites·2 claims
- 2270US6538832B1Single ended preamplifier having multiple first stage banks for improved noise characteristicsTEXAS INSTRUMENTS INC·Filed 2000·Granted Mar 25, 2003·16 cites·5 claims
- 2369US8134792B2Preamplifier and method for synchronization with bit patterned mediaRANMUTHU INDUMINI·Filed 2009·Granted Mar 13, 2012·2 cites·18 claims
- 2465US8325583B2Laser diode driver with wave-shape controlDEAN DOUGLAS WARREN·Filed 2010·Granted Dec 4, 2012·1 cites·17 claims
- 2562US12341506B2High-side transistor partitioning and controlTEXAS INSTRUMENTS INC·Filed 2023·Granted Jun 24, 2025·0 cites·19 claims
- 2662US8134807B2Thermally enhanced disk driveESCOBAR-BOWSER PRISCILLA·Filed 2007·Granted Mar 13, 2012·1 cites·18 claims
- 2760US6700719B2Preamp reader design for high resistance read headsTEXAS INSTRUMENTS INC·Filed 2001·Granted Mar 2, 2004·5 cites·10 claims
- 2859US7152800B2Preamplifier system having programmable resistanceTEXAS INSTRUMENTS INC·Filed 2002·Granted Dec 26, 2006·4 cites·30 claims
- 2959US6724551B2Preamp fast head switch technique for servo modeTEXAS INSTRUMENTS INC·Filed 2001·Granted Apr 20, 2004·3 cites·6 claims
- 3059US6724556B2Single pole voltage bias loop for increased stabilityTEXAS INSTRUMENTS INC·Filed 2001·Granted Apr 20, 2004·3 cites·6 claims
- 3158US2025244410A1Electronic device, system and inductive switching test methodTEXAS INSTRUMENTS INC·Filed 2024·Application pending·0 cites
- 3257US11552555B2Circuit electromagnetic interference controlTEXAS INSTRUMENTS INC·Filed 2020·Granted Jan 10, 2023·0 cites·21 claims
- 3357US8537868B2Laser diode write driver feedback, current mirror, and differential-pair circuitryTEXAS INSTRUMENTS INC·Filed 2012·Granted Sep 17, 2013·0 cites·8 claims
- 3457US6396346B1Low noise magneto-resistive read head preamplifierTEXAS INSTRUMENTS INC·Filed 2000·Granted May 28, 2002·9 cites·20 claims
- 3556US12388367B2Reverse recovery protection in a switching voltage converterTEXAS INSTRUMENTS INC·Filed 2022·Granted Aug 12, 2025·0 cites·20 claims
- 3656US10819228B2Charge pump capacitor coupled to input, reference voltage for overvoltageTEXAS INSTRUMENTS INC·Filed 2017·Granted Oct 27, 2020·0 cites·16 claims
- 3756US8437232B2High frequency modulatorDOI AKIHIKO·Filed 2009·Granted May 7, 2013·0 cites·14 claims
- 3855US8174953B2Input current channel deviceLI SHENGYUAN·Filed 2009·Granted May 8, 2012·0 cites·12 claims
- 3954US7940824B2Laser diode driver architecturesTEXAS INSTRUMENTS INC·Filed 2008·Granted May 10, 2011·2 cites·19 claims
- 4054US7646219B2Translator circuit having internal positive feedbackTEXAS INSTRUMENTS INC·Filed 2008·Granted Jan 12, 2010·2 cites·20 claims
- 4154US6522492B1Write to read switching time trim circuitTEXAS INSTRUMENTS INC·Filed 2000·Granted Feb 18, 2003·2 cites·7 claims
- 4252US11063146B2Back-to-back power field-effect transistors with associated current sensorsTEXAS INSTRUMENTS INC·Filed 2019·Granted Jul 13, 2021·0 cites·34 claims
- 4351US12125811B2Semiconductor structure and method for wafer scale chip packageTEXAS INSTRUMENTS INC·Filed 2018·Granted Oct 22, 2024·0 cites·16 claims
- 4451US2025038645A1Active voltage clamp circuitTEXAS INSTRUMENTS INC·Filed 2023·Application pending·0 cites
- 4550US2018138112A1Power field-effect transistor (fet), pre-driver, controller, and sense resistor integration for multi-phase power applicationsTEXAS INSTRUMENTS INC·Filed 2018·Application pending·0 cites
- 4646US2007127149A1Offset cancellation scheme for perpendicular readerTEXAS INSTRUMENTS INC·Filed 2005·Application pending·0 cites
- 4743US6060872AVoltage bias current sense single ended preamplifier with second stage dominant poleTEXAS INSTRUMENTS INC·Filed 1998·Granted May 9, 2000·5 cites·9 claims
- 4842US11041901B2Unclamped inductor switching test at wafer probeTEXAS INSTRUMENTS INC·Filed 2019·Granted Jun 22, 2021·0 cites·20 claims
- 4941US8841943B2Current driver damping circuitLI SHENGYUAN·Filed 2011·Granted Sep 23, 2014·0 cites·18 claims
- 5041US6728056B2Current stealing circuit to control the impedance of a TGMR head amplifier biasing circuit regardless of whether the head amplifier is turned onTEXAS INSTRUMENTS INC·Filed 2002·Granted Apr 27, 2004·0 cites·12 claims
Showing the top 50 of 57 patent records by PatentIndex Score.
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