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IR3500AMPBF Datasheet(PDF) 1 Page - International Rectifier |
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IR3500AMPBF Datasheet(HTML) 1 Page - International Rectifier |
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1 / 48 page  IR3500A Page 1 of 48 July 28, 2009 DATA SHEET XPHASE3TM VR11.0 & AMD PVID CONTROL IC DESCRIPTION The IR3500A Control IC combined with an xPHASE3 TM Phase IC provides a full featured and flexible way to implement a complete VR11.0 or AMD PVID power solution. The Control IC provides overall system control and interfaces with any number of Phase ICs which each drive and monitor a single phase of a multiphase converter. The XPhase3 TM architecture implements a power supply that is smaller, less expensive, and easier to design while providing higher efficiency than conventional approaches. FEATURES • 1 to X phase operation with matching Phase IC • VID Select pin configures AMD 5 or 6 bit PVID, Intel VR11 with/out startup to 1.1V Boot voltage • 0.5% overall system set point accuracy • Programmable 250kHz to 9MHz Daisy-chain digital phase timing clock oscillator frequency provides a per phase switching frequency of 250kHz to 1.5MHz without external components • Programmable Dynamic VID Slew Rate • Programmable VID Offset or No Offset • Programmable Load Line Output Impedance • High speed error amplifier with wide bandwidth of 30MHz and fast slew rate of 12V/us • Programmable converter current limit during soft start, hiccup with delay during normal operation • Central over voltage detection with programmable threshold and communication to phase ICs • Over voltage signal output to system with overvoltage detection during powerup and normal operation • Detection and protection of open remote sense line and open control loop • IC bias linear regulator control with programmable output voltage and UVLO • Programmable VRHOT function monitors temperature of power stage through a NTC thermistor • Remote sense amplifier with true converter voltage sensing and less than 50uA bias current • Simplified PGOOD output provides indication of proper operation and avoids false triggering • Small thermally enhanced 32L 5mm x 5mm MLPQ package • RoHS Compliant FUSE Q2 ROVP2 RCP CVDAC RVCCLFB1 CCP ROSC VID7 1 VID6 2 VID5 3 VID4 4 VID3 5 VID2 6 VID1 7 VID0 8 VDAC 21 VSETPT 19 OCSET 20 LGND 24 VDRP 17 SS/DEL 22 ROSC / OVP 23 IIN 18 IR3500A CONTROL IC SCR RVDAC RVCCLFB2 RFB CDRP RHOTSET2 RHOTSET1 RDRP Q3 ROVP1 4.7uF CVCCL CFB ROCSET RFB1 CCP1 CSS/DEL RVSETPT Q1 VID7 PGOOD 12V RVCCLDRV VIDSEL VID3 VID2 VID6 VID4 VID5 VID0 VID1 VRHOT ENABLE VSS SENSE - VCC SENSE + 6 Wire Bus to Phase ICs To Converter To Load VCCL RFB2 Optional RTHERMISTOR1 VDAC RTHERMISTOR2 Close to Power Stage Figure 1 – Application Circuit |
Similar Part No. - IR3500AMPBF |
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Similar Description - IR3500AMPBF |
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