IR3500V DATA SHEET TM XPHASE3 VR11.1 CPU VTT CONTROL IC DESCRIPTION TM The IR3500V Control IC combined with one or more xPhase3 Phase IC implement the control and MOSFET driver functions for a VR11.1 CPU VTT power supply. FEATURES 1 to X phase operation with matching Phase IC 0.7% 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 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 IC(s) 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 12V RVCCLFB1 RVCCLFB2 CVCCL 4.7uF RVCCLDRV PGOOD 1 24 VID7 LGND ROSC 2 23 VID6 ROSC / OVP CSS/DEL 3 22 VID5 SS/DEL RVDAC 4 21 VID4 VID4 IR3500V VDAC ROCSET 5 20 CVDAC VID3 VID3 OCSET 6 19 CIN VID2 VID2 VSETPT 7 18 1 12 RCS CCS VID1 IIN ISHARE SW VOUT SENSE+ 8 17 2 11 VID0 VDRP DACIN GATEH CBST2 L IR3505 3 10 LGND BOOST VOUT+ 4 9 PHSIN VCCL COUT DISTRIBUTION ENABLE IMPEDANCE VRHOT RHOTSET2 RFB1 CFB RDRP RCP CCP VOUT- CVCCL RFB CCP1 VOUT SENSE- RHOTSET1 RFB2 RTHERMISTOR1 Close to RTHERMISTOR2 Power Stage Figure 1 Single Phase VR11.1 CPU VTT Application Circuit Page 1 of 34 July 28, 2008 9 32 ENABLE VIDSEL 10 31 VRHOT PGOOD 11 30 HOTSET VCCLDRV 12 29 VOSEN- VCCLFB 13 28 VOSEN+ VCCL 14 27 VO PHSIN 15 26 FB PHSOUT 16 25 EAOUT CLKOUT 5 16 PHSOUT EAIN 6 15 CLKIN CSIN- 7 14 PGND CSIN+ 8 13 GATEL VCC IR3500V ORDERING INFORMATION Device Package Order Quantity IR3500V MTRPBF 32 Lead MLPQ 3000 per reel (5 x 5 mm body) * IR3500V MPBF 32 Lead MLPQ 100 piece strips *Samples only (5 x 5 mm body) ABSOLUTE MAXIMUM RATINGS Stresses beyond those listed below may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not implied. o o Operating Junction Temperature.. 0 C to 150 C o o Storage Temperature Range.-65 C to 150 C ESD RatingHBM Class 1C JEDEC Standard MSL Rating2 o Reflow Temperature.260 C PIN PIN NAME V V I I MAX MIN SOURCE SINK 1-8 VID7-0 7.5V -0.3V 1mA 1mA 9 ENABLE 3.5V -0.3V 1mA 1mA 10 VRHOT 7.5V -0.3V 1mA 50mA 11 HOTSET 7.5V -0.3V 1mA 1mA 12 VOSEN- 1.0V -0.5V 5mA 1mA 13 VOSEN+ 7.5V -0.5V 5mA 1mA 14 VO 7.5V -0.3V 5mA 25mA 15 FB 7.5V -0.3V 1mA 1mA 16 EAOUT 7.5V -0.3V 25mA 10mA 17 VDRP 7.5V -0.3V 35mA 1mA 18 IIN 7.5V -0.3V 100mA 1mA 19 VSETPT 3.5V -0.3V 1mA 1mA 20 OCSET 7.5V -0.3V 1mA 1mA 21 VDAC 3.5V -0.3V 1mA 1mA 22 SS/DEL 7.5V -0.3V 1mA 1mA 23 ROSC/OVP 7.5V -0.3V 1mA 1mA 24 LGND n/a n/a 20mA 1mA 25 CLKOUT 7.5V -0.3V 100mA 100mA 26 PHSOUT 7.5V -0.3V 10mA 10mA 27 PHSIN 7.5V -0.3V 1mA 1mA 28 VCCL 7.5V -0.3V 1mA 20mA 29 VCCLFB 3.5V -0.3V 1mA 1mA 30 VCCLDRV 10V -0.3V 1mA 50mA 31 PGOOD VCCL + 0.3V -0.3V 1mA 20mA 32 VIDSEL 7.5V -0.3V 5mA 1mA Page 2 of 34 July 28, 2008