Replaced by VRK81B100CS VRK81B080CS www.murata-ps.com Programmable, 80A Single Output DC/DC Converter SELECTION GUIDE V (NOM.) V Output Current A 12 0.8-1.55 80 Input Voltage Order Code VRK81B080CS Output Voltage Efficiency % (TYP.) 85 INPUT CHARACTERISTICS Parameter Conditions1 Input voltage operating range Under voltage lockout FEATURES Meets AMD K8 requirements DAC Programmable output voltage Maximum input current Power good output No-load input current Disabled input current Differential remote sense Enable - positive logic Turn-on threshold Turn-off threshold Hysteresis voltage Typical: 80A, 1.4VID, VIN = 12V Max: 80A, 1.55VID, VIN = 12V Enable state, no load Disabled state On state range Off state range MIN. TYP. MAX. Units 10.2 6.9 5.8 0.7 12.0 7.3 6.4 0.9 11 13.2 7.7 7.0 1.1 V 100 10 0.8 -0.3 200 20 TYP. 13 400 50 5 0.4 A mA V Remote enable Supervisory functions Latch off overcurrent Short circuit protection Tri-state output when disabled Dynamic VID capability OUTPUT CHARACTERISTICS Parameter Conditions1 MIN. Voltage set point Line regulation Load regulation Voltage total regulation DC 5-Bit DAC controlled 0.800 -5 SMBus temperature monitor Ripple & noise 2 DESCRIPTION Current operating range Efficiency Turn-on time VRK81B080CS is designed to meet the fast load transients required by AMD 64-bit processors and is fully compliant with the latest AMD64™ processor power specifications. High efficiency of 85% at full load for reduced power dissipation to simplify system thermal management. Packaged in a compact design, VRK81B080CU is ideal for use in a wide variety of server applications. Recommended bulk output capacitance 0 0.6 VID-50mV 20MHz bandwidth, using recommended output capacitors IO = 80A, VID = 1.325V VIN present: enable to 90% VOUT 560μF, 4V alum poly 10μF, 1206 X7R ceramic MAX. Units 1.55 5.0 V mV mΩ V VID+50mV 8.4 0 83 mVp-p 80 50 A % mS EA EA MAX. Units 85 8 25 GENERAL CHARACTERISTICS Parameter Conditions1 Semiconductor junction temperature Package rated to 150ºC Material flammability MTBF Switching frequency UL 94V-0 Calculated (RAC PRISM) Per phase MIN. TYP. 115 ºC x106 Hrs KHz 1.303 300 TEMPERATURE CHARACTERISTICS Parameter Conditions1 MIN. Storage temperature range Non-condensing -40 70 Operating temperature range See derating graph 0 60 TYP. MAX. Units ºC PROTECTION CHARACTERISTICS For full details go to www.murata-ps.com/rohs Parameter Conditions1 Output overcurrent shutdown Latching Overvoltage Indication, CBOUT VOUT MIN. TYP. 85 MAX. Units 120 A 2.1 V 1. VIN = 12VDC, TA = 25ºC, Airflow = 400LFM unless otherwise noted. 2. Output ripple voltage is specified when measured with recommended capacitance at the output of the converter. MDC_VRK81B080CS.B01 Page 1 of 4 VRK81B080CS Programmable, 80A Single Output DC/DC Converter THERMAL DERATING GRAPH -'. -'. $VSSFOU -'. -'. 5FNQFSBUVSF VID CODES VID4 VID3 VID2 VID1 VID0 VOUT 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1.550 1.525 1.500 1.475 1.450 1.425 1.400 1.375 1.350 1.325 1.300 1.275 1.250 1.225 1.200 1.175 1.150 1.125 1.100 1.075 1.050 1.025 1.000 0.975 0.950 0.925 0.900 0.875 0.850 0.825 0.800 Shutdown MDC_VRK81B080CS.B01 Page 2 of 4 VRK81B080CS Programmable, 80A Single Output DC/DC Converter PART NUMBER CODING 73,#$4$ 'BNJMZ 7373. 1CGSFF $3P)4 7FSTJPO 'PSNGBDUPS 44UBOEBSE6 .PVOUJOHUZQF $$BSEFEHF 1FBLPVUQVUDVSSFOU " ".%,TVQQPSU ,, *OQVUWPMUBHF #7*/ PACKAGE SPECIFICATIONS PIN ASSIGNMENT Pin Signal Pin Signal 1 2 3 4 5 6 7 8 9 101 111 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 GND GND GND VID4 VID2 VID0 COREFB_H PWRGD ENABLE SmDA SMCL SGND VDD CORE+ VDD CORE+ VDD CORE+ GND GND GND VDD CORE+ VDD CORE+ VDD CORE+ VDD CORE+ VDD CORE+ VDD CORE+ GND GND GND 54 53 52 51 50 49 48 47 461 451 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 +12VIN +12VIN +12VIN VID3 VID1 NC CORERB_L CBOUT ADD 0 ADD 1 VRMPRES_L +5V ALWAYS VDD CORE+ VDD CORE+ VDD CORE+ GND GND GND VDD CORE+ VDD CORE+ VDD CORE+ VDD CORE+ VDD CORE+ VDD CORE+ GND GND GND 1. Optional features. Substitute “NC” if option is not ordered. MDC_VRK81B080CS.B01 Page 3 of 4 VRK81B080CS Programmable, 80A Single Output DC/DC Converter PACKAGE SPECIFICATIONS (continued) MECHANICAL DIMENSIONS 4:. Recommended Interface Connector Options Typco/Elcon 283-0172-01303 (Solder Tail, Long) 283-0172-02303 (Solder Tail, Short) 284-0202-03003 (Surface Mount) All dimensions in inches ±0.03 (mm ±0.25mm). Weight: 2.08oz (59g) Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356 www.murata-ps.com email: [email protected] ISO 9001 and 14001 REGISTERED 06/15/09 Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2009 Murata Power Solutions, Inc. USA: Mansfield (MA), Tel: (508) 339-3000, email: [email protected] Canada: Toronto, Tel: (866) 740-1232, email: [email protected] UK: Milton Keynes, Tel: +44 (0)1908 615232, email: [email protected] France: Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: [email protected] Germany: München, Tel: +49 (0)89-544334-0, email: [email protected] Japan: Tokyo, Tel: 81-3-3779-1031, email: [email protected] Kyoto, Tel: 81-75-955-7269, email: [email protected] China: Shanghai, Tel: +86 215 027 3678, email: [email protected] Guangzhou, Tel: +86 208 221 8066, email: [email protected] Singapore: Parkway Centre, Tel: +65 6348 9096, email: [email protected] MDC_VRK81B080CS.B01 Page 4 of 4