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SIPEX CORP
US23 patents
Top patents by PatentIndex Score
US5306954AApr 26, 1994
Charge pump with symmetrical +V and -V outputs
SIPEX CORP123 citations96
US5760637AJun 2, 1998
Programmable charge pump
SIPEX CORP71 citations95
US5831562ANov 3, 1998
Differential sample and hold circuit with common mode sampling for an analog-to-digital converter
SIPEX CORP60 citations94
US5638072AJun 10, 1997
Multiple channel analog to digital converter
SIPEX CORP54 citations94
US6922041B2Jul 26, 2005
Apparatus for and method of adjusting a switching regulator output for a circuit having a pre-charge voltage
SIPEX CORP22 citations92
US6512353B2Jan 28, 2003
Synchronized, ripple independent window comparator for switch-mode power converters
SIPEX CORP19 citations91
US5397928AMar 14, 1995
Voltage tripler using a charge pump having a single multiplexed charge transfer capacitor
SIPEX CORP23 citations91
US6577110B2Jun 10, 2003
DC-to-DC converter with constant ripple current regulation for continuous and discontinuous conduction mode operation
SIPEX CORP30 citations90
US6504349B2Jan 7, 2003
Pulse width modulated voltage regulation circuit and related methods
SIPEX CORP28 citations90
US6172555B1Jan 9, 2001
Bandgap voltage reference circuit
SIPEX CORP46 citations90
US5594386AJan 14, 1997
Pulse width modulated amplifier
SIPEX CORP37 citations90
US6566905B2May 20, 2003
Method and apparatus for a multi-state single program pin
SIPEX CORP13 citations83
US6570748B2May 27, 2003
Method and apparatus for indicating an over-current condition
SIPEX CORP6 citations73
US6611166B2Aug 26, 2003
Charge pump load determination circuit
SIPEX CORP10 citations71
US6486645B1Nov 26, 2002
Voltage regulation circuit and related methods having a dynamically determined minimum discharge time
SIPEX CORP16 citations70
US6378026B1Apr 23, 2002
Connection detection circuit and method
SIPEX CORP11 citations68
US5789943AAug 4, 1998
V.35 network terminator
SIPEX CORP13 citations68
US6147517ANov 14, 2000
Voltage comparator circuit
SIPEX CORP13 citations67
US7382191B2Jun 3, 2008
Multiplier-transimpedance amplifier combination with input common mode feedback
SIPEX CORP7 citations64
US6376934B1Apr 23, 2002
Voltage waveform generator
SIPEX CORP11 citations64
US5973486AOct 26, 1999
Differential power sensor circuit
SIPEX CORP4 citations60
US5831893ANov 3, 1998
Memory cell
SIPEX CORP0 citations50
US6593796B1Jul 15, 2003
Method and apparatus for powering multiple AC loads using overlapping H-bridge circuits
SIPEX CORP2 citations44