VRK81B100TH
Programmable, 100A Single Output DC/DC Converter
NOT RECOMMENDED
FOR NEW DESIGNS
SELECTION GUIDE
GUID
E
D
Order Code
r
t
Voltage
o
Input
Vo
ltage
(
NOM.)
V (NOM.)
12
t
Output
Volt
age
Voltage
V
0.8-1.55
5
O
utput
Output
C
urren
Current
A
100
Efficiency
% (TYP.)
86
VRK8
1B100TH
VRK81B100TH
8
INPUT CHARACTERISTICS
T
CHARACT
ERISTICS
T
Parameter
Input voltage operating range
Conditions
1
Turn-on threshold
Turn-off threshold
Hysteresis voltage
Typical: 100A, 1.4VID, V
IN
= 12V
Enable state, no load
Disabled state
On state range
Off state range
Active high, pullup required
MIN.
11.04
6.7
5.6
0.7
100
10
0.8
-0.3
TYP.
12.0
7.1
6.2
0.9
14
200
20
MAX.
12.6
7.5
6.8
1.1
400
50
5
0.4
5.5
Units
V
Under voltage lockout
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
Maximum input current
No-load input current
Disabled input current
Enable - positive logic
Powergood signal
A
mA
V
OUTPUT CHARACTERISTICS
Parameter
Voltage set point
Line regulation
Load regulation
Voltage total regulation DC
Voltage total regulation AC
Ripple & noise
2
Current operating range
Efficiency
Turn-on time
Recommended bulk output
capacitance
Conditions
1
5-Bit DAC controlled
MIN.
0.800
-5
VID-50mV
VID-100mV
TYP.
0
0.5
MAX.
1.55
5
VID+50mV
VID+100mV
Units
V
mV
mΩ
V
V
mVp-p
DESCRIPTION
VRK81B100TH 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. In a
horizontal-mount orientation with a max height
of 0.415”, VRK81B100TH’s unique design and
thermal packaging delivers 100A of power with
efficiencies exceeding 86%. With its ultra low
profile and high current rating, VRK81B100TH
is an ideal fit for a wide variety of applications
including 1U high, or under, rack-mounting
equipment and blade servers.
20MHz bandwidth, using
recommended output capacitors
Based on air flow of 500LFM
at 45ºC
I
O
= 100 Amps VID = 1.550V
V
IN
present: enable to 90% V
OUT
560μF, 4V alum poly
10μF, 1206 X7R ceramic
0
83
8.4
100
86
50
8
25
A
%
mS
EA
EA
GENERAL CHARACTERISTICS
Parameter
Semiconductor junction
temperature
Material flammability
MTBF
Switching frequency
Conditions
1
Package rated to 150ºC
UL 94V-0
Calculated (RAC PRISM)
Per phase
MIN.
TYP.
MAX.
115
Units
ºC
x10
6
Hrs
KHz
1.09
300
TEMPERATURE CHARACTERISTICS
Parameter
Storage temperature range
Operating temperature
range
Conditions
1
Non-condensing
See thermal derating graph
MIN.
-40
0
TYP.
MAX.
70
60
Units
ºC
PROTECTION CHARACTERISTICS
Parameter
Output overcurrent
shutdown
Overvoltage shutdown
Conditions
1
Latching
V
OUT
MIN.
105
TYP.
MAX.
150
Units
A
V
2.2
1. V
IN
= 12VDC, T
A
= 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_VRK81B100TH.1
Page 1 of 4
VRK81B100TH
Programmable, 100A Single Output DC/DC Converter
THERMAL DERATING GRAPHS
RECOMMENDED INTERCONNECT
The module should be soldered in place. The power interconnect is made by 10 pins that are .060 inches in diameter. The signal interconnect is made by 12 pins that
are .020 inch square on a 2mm grid. See the recommended footprint or dimensions.
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
V
OUT
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_VRK81B100TH.1
Page 2 of 4
VRK81B100TH
Programmable, 100A Single Output DC/DC Converter
PART NUMBER CODING
PACKAGE SPECIFICATIONS
PIN ASSIGNMENT
Pin
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
Signal
+12V
IN
+12V
IN
GND
V
DD
V
DD
GND
GND
V
DD
V
DD
GND
Pin
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
J12
Signal
NC
VID0
VID1
VID2
VID3
VID4
COREFB_L/REMOTE SENSE-
COREFB_H/REMOTE SENSE+
Enable
PWRGD
-VRMPRES
NC
www.murata-ps.com
Technical enquiries
-
email:
sales@murata-ps.com,
tel:
+1 508 339 3000
ODC_VRK81B100TH.1
Page 3 of 4
VRK81B100TH
Programmable, 100A Single Output DC/DC Converter
PACKAGE SPECIFICATIONS (continued)
MECHANICAL DIMENSIONS
Overall VRM Dimensions
VRM Footprint
All dimensions in inches ±0.03 (mm ±0.25mm).
Weight: 1.9oz (53.865g)
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
