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MDC_VRK81B100CS Datasheet(PDF) 1 Page - Murata Manufacturing Co., Ltd.

Part No. MDC_VRK81B100CS
Description  Programmable, 100A Single Output DC/DC Converter
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Maker  MURATA [Murata Manufacturing Co., Ltd.]
Homepage  http://www.murata.com
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MDC_VRK81B100CS Datasheet(HTML) 1 Page - Murata Manufacturing Co., Ltd.

   
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Technical enquiries - email: sales@murata-ps.com, tel: +1 508 339 3000
www.murata-ps.com
VRK81B100CS
Programmable, 100A Single Output DC/DC Converter
MDC_VRK81B100CS.B01 Page 1 of 4
For full details go to
www.murata-ps.com/rohs
 
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
SMBus temperature monitor
DESCRIPTION
VRK81B100CS 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, VRK81B100CS is ideal for use in
a wide variety of server applications.
This product is a direct replacement for
VRK81B080CS.
SELECTION GUIDE
Order Code
Input Voltage
Output Voltage
Output
Current
Efficiency
V (NOM.)
V
A
% (Typ.)
VRK81B100CS-1C
12
0.8-1.55
100
85
INPUT CHARACTERISTICS
Parameter
Conditions1
Min.
Typ.
Max.
Units
Input voltage operating range
10.2
12.0
13.2
V
Under voltage lockout
Turn-on threshold
6.5
6.9
7.3
Turn-off threshold
5.4
6.0
6.6
Hysteresis voltage
0.7
0.9
1.1
Maximum input current
Typical: 80A, 1.4VID, VIN = 12V
11
A
Max: 80A, 1.55VID, VIN = 12V
13
No-load input current
Enable state, no load
100
200
400
mA
Disabled input current
Disabled state
10
20
50
Enable - positive logic
On state range
0.8
5
V
Off state range
-0.3
0.4
OUTPUT CHARACTERISTICS
Parameter
Conditions1
Min.
Typ.
Max.
Units
Voltage set point
5-Bit DAC controlled
0.800
1.55
V
Line regulation
-5
0
5.0
mV
Load regulation
0.6
Voltage total regulation DC
VID-50mV
VID+50mV
V
Ripple & noise 2
20MHz bandwidth, using
recommended output capacitors
8.4
mVp-p
Current operating range
0
100
A
Efficiency
IO = 100A, VID = 1.325V
82
84
%
IO = 80A, VID = 1.325V
83
85
Turn-on time
VIN present: enable to 90% VOUT
50
mS
Recommended bulk output
capacitance
560μF, 4V alum poly
8
EA
10μF, 1206 X7R ceramic
25
EA
GENERAL CHARACTERISTICS
Parameter
Conditions1
Min.
Typ.
Max.
Units
Semiconductor junction
temperature
Package rated to 150ºC
115
ºC
Material flammability
UL 94V-0
MTBF
Calculated (RAC PRISM)
1.303
x106 Hrs
Switching frequency
Per phase
300
KHz
TEMPERATURE CHARACTERISTICS
Parameter
Conditions1
Min.
Typ.
Max.
Units
Storage temperature range
Non-condensing
-40
70
ºC
Operating temperature
range
See derating graph
0
60
PROTECTION CHARACTERISTICS
Parameter
Conditions1
Min.
Typ.
Max.
Units
Output overcurrent
shutdown
Latching
115
120
A
Overvoltage Indication,
CBOUT
VOUT
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
.


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