ODC_VR11CB150CU.A02 Page of 5
VR11CB150CU
Programmable, Single Output, 0.8325V-.600Vout@50A in 6.25mV increments
P O W E R E L E C T R O N I C S D I V I S I O N
D C / D C C O N V E R T E R S
www.cd4power.com
FEATURES
n
VRM VID - No Load Line
n
DAC programmable output voltage
n
Power good output
n
Differential remote sense
n
Remote enable
n
Supervisory functions
n
Output overcurrent
n
Short circuit protection
n
Overtemperature indicator
n
Output current level indicator
n
Tri-state output when disabled
n
Dynamic VID capability
DESCRIPTION
VRCB50CU is the no load line (droopless)
version of the 50A VRM models where the
output voltage stays constant over the output
load range. High efficiency of 85% at full load
for reduced power dissipation simplifies system
thermal management. Available in U and 2U form
factors, VRCB50CU is ideal for use in a wide
variety of non-intel processor applications where
high current and low voltage is required.
SELECTION GUIDE
Order Code
Nominal
Input Voltage (V)
Peak Current (A)
Mounting
Type
Form Factor
VR11CB150CU-1C
2
50
Card-edge
U
VR11CB150CS-1C
2
50
Card-edge
Standard Height
or 2U
INPUT CHARACTERISTICS
Parameter
Conditions
MIN.
TYP.
MAX.
Units
Input voltage operating range
.04
2.0
2.60
V
Under voltage lockout
Turn-on threshold
5.8
Turn-off threshold
5.0
Hysteresis voltage
0.6
.
Maximum input current
Typical: 30A, .325VID
7.
A
Max: 50A, .6VID
25
No-load input current
Enable state, no load
300
mA
Disabled input current
Disabled state
40
Enable - positive logic
On state range
0.9
5.0
V
Off state range
-0.3
0.4
OUTPUT CHARACTERISTICS
Parameter
Conditions
MIN.
TYP.
MAX.
Units
Voltage set point
7-Bit DAC controlled
0.8375
.6
V
Line regulation
-2
0
2
mV
Voltage regulation
-2
0
2
Ripple & noise 2
20MHz bandwidth
6.4
mVp-p
Current operating range
0
50
A
Efficiency for .0 TDP
IO = 30A, VID = .325
84
85
%
Turn-on time
VIN present: enable to 90% VOUT
4
0
mS
Transient response3
00A step, 00A/S, Vo,
Adjustable
70
mV
Remote sense compensa-
tion range 4
300
mV
Recommended ceramic
0F ceramic X5R or X6S
50
EA
Recommended bulk output
UCC 4PS560MH or equivalent
7
GENERAL CHARACTERISTICS
Parameter
Conditions
MIN.
TYP.
MAX.
Units
Storage temperature range
Non-condensing
-40
70
C
Operating temperature
range
0
60
Semiconductor junction
temperature
Package rated to 50C
5
Material flammability
UL 94V-0
MTBF
Calculated (RAC PRISM) 45C
.099
x06 Hrs
Demonstrated
Switching frequency
Per phase
300
KHz
U
Dimensions
3.8”L x .8”H x .0”W
Weight
85
g
2U
Dimension
3.8”L x 2.5”H x 0.870”W
Weight
00
g