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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
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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 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