VRK81B100TH Datasheet, PDF (1/4 Pages) Murata Power Solutions Inc. – Programmable, 100A Single Output DC/DC Converter

VRK81B100TH
Programmable, 100A Single Output DC/DC Converter
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
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.
www.murata-ps.com
NOT RECOMMENDED ^{SELECTION GUIDE}
Order Code
Input Voltage
Output Voltage
Output
Current
FOR NEW DESIGNS _VRK81B100TH
V (NOM.)
V
A
12
0.8-1.55
100
Efficiency
% (TYP.)
86
INPUT CHARACTERISTICS
Parameter
Conditions¹
MIN.
TYP.
MAX. Units
Input voltage operating range
11.04
12.0
12.6
Under voltage lockout
Turn-on threshold
Turn-off threshold
6.7
7.1
7.5
V
5.6
6.2
6.8
Hysteresis voltage
0.7
0.9
1.1
Maximum input current
Typical: 100A, 1.4VID, VIN = 12V
14
A
No-load input current
Disabled input current
Enable state, no load
Disabled state
100
200
400
mA
10
20
50
Enable - positive logic
On state range
Off state range
0.8
5
V
-0.3
0.4
Powergood signal
Active high, pullup required
5.5
OUTPUT CHARACTERISTICS
Parameter
Conditions¹
Voltage set point
5-Bit DAC controlled
Line regulation
Load regulation
Voltage total regulation DC
Voltage total regulation AC
MIN.
TYP.
MAX. Units
0.800
1.55
V
-5
0
5
mV
0.5
mΩ
VID-50mV
VID+50mV V
VID-100mV
VID+100mV V
Ripple & noise ²
20MHz bandwidth, using
recommended output capacitors
8.4
mVp-p
Current operating range
Based on air flow of 500LFM
at 45ºC
0
100
A
Efficiency
IO = 100 Amps VID = 1.550V
83
86
Turn-on time
VIN present: enable to 90% VOUT
Recommended bulk output ^{560μF, 4V alum poly}
8
capacitance
10μF, 1206 X7R ceramic
25
%
50
mS
EA
EA
GENERAL CHARACTERISTICS
Parameter
Conditions¹
Semiconductor junction
temperature
Package rated to 150ºC
Material flammability
UL 94V-0
MTBF
Switching frequency
Calculated (RAC PRISM)
Per phase
MIN.
TYP.
MAX. Units
115
ºC
1.09
x10⁶ Hrs
300
KHz
TEMPERATURE CHARACTERISTICS
Parameter
Conditions¹
Storage temperature range Non-condensing
Operating temperature
range
See thermal derating graph
MIN.
TYP.
MAX. Units
-40
70
ºC
0
60
PROTECTION CHARACTERISTICS
Parameter
Conditions¹
Output overcurrent
shutdown
Latching
Overvoltage shutdown
VOUT
MIN.
TYP.
MAX. Units
105
150
A
2.2
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.
Technical enquiries - email: [e-mail], tel: [phone]
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