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VRK81B080CU
www.murata-ps.com
Programmable, 80A Single Output DC/DC Converter
OBSOLETE PRODUCT
SELECTION GUIDE
Last time buy: August
31, 2014.Output Voltage
Input Voltage
Click Here For Obsolescence Notice
V (NOM.)of February
V 2014.
Order Code
VRK81B080CU
12
0.800-1.55
Output
Current
A
Efficiency
% (TYP.)
80
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
„
Remote enable
„
Supervisory functions
„
Latch off overcurrent
„
Short circuit protection
„
Tri-state output when disabled
„
Dynamic VID capability
MAX.
Units
12.0
6.9
6.0
0.9
11
13.2
7.3
6.6
1.1
V
100
10
0.8
-0.3
200
20
TYP.
Parameter
Conditions1
MIN.
Voltage set point
Line regulation
Load regulation
Voltage total regulation DC
5-Bit DAC controlled
0.800
-5
Ripple & noise 2
„
SMBus temperature monitor
Current operating range
Efficiency
Turn-on time
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.
TYP.
10.2
6.5
5.4
0.7
13
400
50
5
0.4
A
mA
V
OUTPUT CHARACTERISTICS
„
1U Form factor (1.200” total mating height)
DESCRIPTION
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.
Recommended bulk output
capacitance
0
0.6
VID-50mV
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
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
115
ºC
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.
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.
www.murata-ps.com
email: sales@murata-ps.com
21 Sep 2009
MDC_VRK81B080CU.B01 Page 1 of 4
VRK81B080CU
Programmable, 80A Single Output DC/DC Converter
THERMAL DERATING GRAPH
.BY-PBE"
-'.
-'.
"NCJFOU5FNQFSBUVSFEFHSFFT$FMTJVT
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
www.murata-ps.com
email: sales@murata-ps.com
21 Sep 2009
MDC_VRK81B080CU.B01 Page 2 of 4
VRK81B080CU
Programmable, 80A Single Output DC/DC Converter
PART NUMBER CODING
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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
VDD
VDD
GND
GND
GND
VDD
VDD
VDD
VDD
VDD
VDD
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
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
email: sales@murata-ps.com
21 Sep 2009
MDC_VRK81B080CU.B01 Page 3 of 4
VRK81B080CU
Programmable, 80A Single Output DC/DC Converter
."9
."9 Recommended Interface Connector Options
Typco/Elcon
283-0172-01303 (Solder Tail, Long)
283-0172-02303 (Solder Tail, Short)
284-0202-03003 (Surface Mount)
*407*&8
'033&'0/-:
All dimensions in inches ±0.03 (mm ±0.25mm).
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
Weight: 2.08oz (59g)
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.
www.murata-ps.com/locations
email: sales@murata-ps.com
21 Sep 2009
MDC_VRK81B080CU.B01 Page 4 of 4