Replaced by VRK81B100CS
VRK81B080CU
Programmable, 80A Single Output DC/DC Converter
OBSOLETE PRODUCT
Order Code Code Input Voltage Input Voltage (NOM.) M V (NOM.) V Contact81B080CU Factory for Replacement Model VRK B VRK81B080CU 12 12 0.800-1.55 0.800-1.55
SELECTION GUIDE SELECTION GUIDE
Output Voltage Output Voltage
Output Current A
80
Efficiency % (TYP.)
85
INPUT CHARACTERISTICS CHARACTERISTICS E
Parameter
Input voltage operating range
Conditions1
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.
10.2 6.5 5.4 0.7
TYP.
12.0 6.9 6.0 0.9 11 200 20
MAX.
13.2 7.3 6.6 1.1 13 400 50 5 0.4
Units
V
FEATURES
Meets AMD K8 requirements DAC Programmable output voltage Power good output Differential remote sense Remote enable Supervisory functions Latch off overcurrent Short circuit protection Tri-state output when disabled Dynamic VID capability 1U Form factor (1.200” total mating height) SMBus temperature monitor
Under voltage lockout
Maximum input current No-load input current Disabled input current Enable - positive logic
A mA V
100 10 0.8 -0.3
OUTPUT CHARACTERISTICS
Parameter
Voltage set point Line regulation Load regulation Voltage total regulation DC Ripple & noise 2 Current operating range Efficiency Turn-on time Recommended bulk output capacitance
Conditions1
5-Bit DAC controlled
MIN.
0.800 -5 VID-50mV
TYP.
0 0.6
MAX.
1.55 5.0 VID+50mV
Units
V mV mΩ V mVp-p
20MHz bandwidth, using recommended output capacitors IO = 80A, VID = 1.4V VIN present: enable to 90% VOUT 560μF, 4V alum poly 10μF, 1206 X7R ceramic 0 83
8.4 80 85 50 8 25
DESCRIPTION
VRK81B080CU 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. Packaged in a compact design, VRK81B080CU has a height only 1.16” (1.2” total mating height), and is ideal for 1U server applications. High efficiency of 85% at full load for reduced power dissipation to simplify system thermal management.
A % mS EA EA
GENERAL CHARACTERISTICS
Parameter
Semiconductor junction temperature Material flammability MTBF Switching frequency
Conditions1
Package rated to 150ºC UL 94V-0 Calculated (RAC PRISM) Per phase
MIN.
TYP.
MAX.
115
Units
ºC
1.303 300
x106 Hrs KHz
TEMPERATURE CHARACTERISTICS
Parameter
Storage temperature range Operating temperature range
Conditions1
Non-condensing See derating graph
MIN.
-40 0
TYP.
MAX.
70 60
Units
ºC
PROTECTION CHARACTERISTICS
Parameter
Output overcurrent shutdown Overvoltage Indication, CBOUT
Conditions1
Latching VOUT
MIN.
85
TYP.
MAX.
120
Units
A V
2.1
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.
www.murata-ps.com
Technical enquiries - email: sales@murata-ps.com, tel: +1 508 339 3000
ODC_VRK81B080CU.1 Page 1 of 4
VRK81B080CU
Programmable, 80A Single Output DC/DC Converter
THERMAL DERATING GRAPH
VID CODES
VID4
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
VID3
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
VID2
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
VID1
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
VID0
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
VOUT
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
www.murata-ps.com
Technical enquiries - email: sales@murata-ps.com, tel: +1 508 339 3000
ODC_VRK81B080CU.1 Page 2 of 4
VRK81B080CU
Programmable, 80A Single Output DC/DC Converter
PART NUMBER CODING
PACKAGE SPECIFICATIONS PIN ASSIGNMENT
Pin
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
Signal
GND GND GND VID4 VID2 VID0 COREFB_H PWRGD ENABLE SmDA SMCL SGND VDD VDD VDD GND GND GND VDD VDD VDD VDD VDD VDD GND GND GND
Pin
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
Signal
+12VIN +12VIN +12VIN VID3 VID1 NC CORERB_L CBOUT ADD 0 ADD 1 VRMPRES_L +5V ALWAYS VDD VDD VDD GND GND GND VDD VDD VDD VDD VDD VDD GND GND GND
1. Optional features. Substitute “NC” if option is not ordered.
www.murata-ps.com
Technical enquiries - email: sales@murata-ps.com, tel: +1 508 339 3000
ODC_VRK81B080CU.1 Page 3 of 4
VRK81B080CU
Programmable, 80A Single Output DC/DC Converter
PACKAGE SPECIFICATIONS (continued)
MECHANICAL DIMENSIONS
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)
USA: Canada: UK: France: Germany: Japan: China: Singapore:
Mansfield (MA), Tel: (508) 339-3000, email: sales@murata-ps.com Toronto, Tel: (866) 740-1232, email: toronto@murata-ps.com Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com München, Tel: +49 (0)89-544334-0, email: munich@murata-ps.com Tokyo, Tel: 3-3779-1031, email: sales_tokyo@murata-ps.com Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com Parkway Centre, Tel: +65 6348 9096, email: singapore@murata-ps.com
Technical enquiries - email: sales@murata-ps.com, tel: +1 508 339 3000
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: sales@murata-ps.com ISO 9001 and 14001 REGISTERED
01/19/09
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. © 2008 Murata Power Solutions, Inc.
www.murata-ps.com
ODC_VRK81B080CU.1 Page 4 of 4
