Inventor · disambiguated record
Douglas Robert Farrenkopf
Also filed as: FARRENKOPF DOUGLAS · FARRENKOPF DOUGLAS R · FARRENKOPF DOUGLAS ROBERT
14 granted patents·2 pending applications·782 citations·filing 1995–2025
94Inventor score
Top patents by PatentIndex Score
16 records- 0196US5889315ASemiconductor structure having two levels of buried regionsNAT SEMICONDUCTOR CORP·Filed 1995·Granted Mar 30, 1999·231 cites·114 claims
- 0295US5899714AFabrication of semiconductor structure having two levels of buried regionsNAT SEMICONDUCTOR CORP·Filed 1995·Granted May 4, 1999·207 cites·57 claims
- 0387US6169433B1Method and apparatus using feedback to generate a ramped voltage with controlled maximum amplitudeNAT SEMICONDUCTOR CORP·Filed 1999·Granted Jan 2, 2001·60 cites·29 claims
- 0485US6515460B1Multiphase switching regulator control architecture for low on time systems that enforces current sharingNAT SEMICONDUCTOR CORP·Filed 2001·Granted Feb 4, 2003·57 cites·19 claims
- 0582US7379283B1ESD protection circuit with a low snapback voltage that is protected from fast non-ESD voltage spikes and ripplesNAT SEMICONDUCTOR CORP·Filed 2007·Granted May 27, 2008·10 cites·18 claims
- 0679US6229293B1DC-to-DC converter with current mode switching controller that produces ramped voltage with adjustable effective ramp rateNAT SEMICONDUCTOR CORP·Filed 1999·Granted May 8, 2001·61 cites·18 claims
- 0779US6100677ASwitching controller chip with internal but not external soft start circuitry and DC to DC converter including such a controller chipNAT SEMICONDUCTOR CORP·Filed 1999·Granted Aug 8, 2000·60 cites·44 claims
- 0878US2025392217A1Power converter stageQORVO US INC·Filed 2025·Application pending·0 cites
- 0968US6714067B1Bootstrap capacitor low voltage prevention circuitNAT SEMICONDUCTOR CORP·Filed 2002·Granted Mar 30, 2004·22 cites·21 claims
- 1063US6111440ACircuit for generating interleaved ramped voltage signals having uniform, controlled maximum amplitudeNAT SEMICONDUCTOR CORP·Filed 1999·Granted Aug 29, 2000·20 cites·21 claims
- 1160US5854099ADMOS process module applicable to an E2 CMOS core processNAT SEMICONDUCTOR CORP·Filed 1997·Granted Dec 29, 1998·21 cites·3 claims
- 1258US2024356545A1Switching circuit for power management circuits and front-end modules (fems)QORVO US INC·Filed 2024·Application pending·0 cites
- 1356US9515555B2Floating power converter having multiple voltage inputsRF MICRO DEVICES INC·Filed 2012·Granted Dec 6, 2016·1 cites·20 claims
- 1456US6952333B1ESD protection circuit for high-voltage, high DV/DT padsNAT SEMICONDUCTOR CORP·Filed 2003·Granted Oct 4, 2005·6 cites·12 claims
- 1554US7339410B1Method and system for providing startup delayNAT SEMICONDUCTOR CORP·Filed 2003·Granted Mar 4, 2008·6 cites·17 claims
- 1652US6094039ASwitching controller chip operable in selected ones of multiple power switch setting modesNAT SEMICONDUCTOR CORP·Filed 1999·Granted Jul 25, 2000·20 cites·29 claims
Join the waitlist — get patent alerts
Get an alert when Douglas Robert Farrenkopf files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →