Dual/DoublerInterleavedMOSFETDriver IR3598 FEATURES DESCRIPTION DualMOSFETdriversinsingle16pinQFN TheIR3598isahighefficiencydualdrivercapableofswitching package apairofhighandlowsideNchannelMOSFETsinsynchronous buckconvertersandisoptimizedforusewithIRsDigitalPWM BuckConverterDriverVin4.0to13.2Vdc controllerstoprovideatotalvoltageregulatorsolutionfortodays advancedcomputingapplications.Inaspacesaving16pinQFN Multimodeoperationtoconfigurethedriver aseitherdualordoubler/interleavedmode package,theIR3598cansignificantlyimprovedensityinhigh drivers phasecountvoltageregulatorssavingover50%boardspace versusconventionaldrivers. VariableGatedrivefrom4Vto13Vto optimizesystemefficiency TheIR3598canbeconfiguredastwoindependentdriversinDUAL 5VVCCandVDRVcapabilityforsleepstates modewithindividualPWMsignals,orasaninterleavedDOUBLER whereonly5Visavailable driverwhereonePWMsignalisinternallysplittodrivethetwo pairsofMOSFETs180outofphase.Theinterleavingactionis Largedriversdesignedtodrive3nFin<12ns optimizedinternallytomanagethetristateactionofmultiple withanyvoltagefrom5Vto12V(typ) phasesduringtransients,lowcurrentsinglephaseoperation,and suppliedtotheVDRVpin PS2operation(seeFigs.8and9.)TheDOUBLERmodecandouble Lowsidedriver0.85source/0.38sink theeffectivemaximumphasecountfromthecontroller,enabling Highsidedriver1.1source/0.60sink awellcontrolled,highphasecountvoltageregulator. Propagationdelays<20ns TheIR3598hasaproprietarycircuitwhichmaintainstheMOSFET Integratedbootstrapdiodeonbothdrivers drivestrengththroughoutthe4.0Vto13.2Vdrivevoltagerange Capableofhighoutputswitchingfrequencies thusinsuringfastswitchingevenwith5Vstandbydriveoperation from150kHzuptogreaterthan1MHz duringsystemsleepmodes.Theintegratedbootdiodesreduce externalcomponentcount.TheIR3598alsofeaturesanadaptive CompatiblewithIRspatentedActive nonoverlapcontrolforshootthroughprotection. TriLevel(ATL)PWMforfastestresponseto transientovershootaswellasindustry TheIR3598PWMinputsarecompatiblewithIRsfastActive standard3.3Vand5VTriStatesignalsin mostmodes TriLevel(ATL)PWMsignalsaswellas3.3Vand5VTriState PWMsignals. Nonoverlapandundervoltageprotection Thermallyenhanced16pinQFNpackage APPLICATIONS LeadfreeRoHScompliantpackage DesktopCPUandGPUsolutions PerformanceoverclockingCPUandGPUVRsolutions LowQuiescentpowertooptimizeefficiency OptimizedforSleepstateS3systemsusing+5VSB BASICAPPLICATION PINDIAGRAM Figure1:IR3598TypicalDOUBLERMode Figure2:IR3598PackageTopView ApplicationCircuit October25,2013 FINAL V1.12 1 Dual/DoublerInterleavedMOSFETDriver IR3598 ORDERINGINFORMATION IR3598 Package Tape&ReelQty PartNumber QFN 3000 IR3598MTRPBF QFN 100 IR3598MPBF PBFLeadFree TRTapeandReel MQFNPackage October25,2013 FINAL V1.12 2