DCM
™
DC-DC Converter
MIL-COTS
MDCM28AP240M320A50
®
S
C
US
C
NRTL
US
Isolated, Regulated DC Converter
Features
•
Isolated, regulated DC-DC converter
•
Up to 320 W, 13.40 A continuous
•
91.7% peak efficiency
•
818 W/in
3
Power density
•
Wide input range 16 – 50 Vdc
•
Safety Extra Low Voltage (SELV) 24.0 V Nominal Output
•
2250 Vdc isolation
•
ZVS high frequency switching
Product Ratings
V
IN
= 16 V to 50 V
V
OUT
= 24.0 V
(14.4 V to 26.4 V Trim)
P
OUT
= 320 W
I
OUT
= 13.40 A
Product Description
The DCM Isolated, Regulated DC Converter is a DC-DC
converter, operating from an unregulated, wide range input to
generate an isolated 24.0 Vdc output. With its high frequency
zero voltage switching (ZVS) topology, the DCM converter
consistently delivers high efficiency across the input line range.
Modular DCM converters and downstream DC-DC products
support efficient power distribution, providing superior power
system performance and connectivity from a variety of
unregulated power sources to the point-of-load.
Leveraging the thermal and density benefits of Vicor’s ChiP
packaging technology, the DCM module offers flexible thermal
management options with very low top and bottom side
thermal impedances. Thermally-adept ChiP based power
components enable customers to achieve cost effective power
system solutions with previously unattainable system size,
weight and efficiency attributes, quickly and predictably.
n
Enables low-profile, high-density filtering
n
Up to 8 units – 2560 W
n
No power derating needed
n
Sharing strategy permits dissimilar line voltages
•
Optimized for array operation
across an array
•
Fully operational current limit
•
OV, OC, UV, short circuit and thermal protection
•
3623 through-hole ChiP package
n
1.524” x 0.898” x 0.286”
(38.72 mm x 22.8 mm x 7.26 mm)
Typical Applications
•
•
•
•
Radar, Range Finding
Guidance Systems, Computing
Motor Drive
Display, GPS, Radio
DCM™ DC-DC Converter
Page 1 of 25
Rev 1.3
02/2016
vicorpower.com
800 927.9474
MDCM28AP240M320A50
Part Ordering Information
Device
MDCM
MDCM = MDCM
Input Voltage Range
28A
28A = 16/28/50 V
Package Type
P
P = ChiP TH
Output
Voltage x 10
240
240 = 24 V
Temperature Grade
M
M = -55 to 125°C
Output Power
320
320 = 320 W
Revision
A5
A5
Version
0
Analog Control
Interface Version
Absolute Maximum Ratings
The absolute maximum ratings below are stress ratings only. Operation at or beyond these maximum ratings can cause permanent damage to the device.
Electrical specifications do not apply when operating beyond rated operating conditions.
Parameter
Input Voltage (+IN to –IN)
Input Voltage Slew Rate
TR to - IN
EN to -IN
FT to -IN
5
Output Voltage (+Out to –Out)
Dielectric withstand (input to output)
Internal Operating Temperature
Storage Temperature
Average Output Current
Basic insulation
M Grade
M Grade
-0.5
2250
-55
-65
125
125
18.2
31.2
mA
V
Vdc
°C
°C
A
Comments
Min
-0.5
-1
-0.3
-0.3
-0.3
Max
65.0
1
3.5
3.5
3.5
Unit
V
V/µs
V
V
V
Figure 1
—
Thermal Specified Operating Area: Max Output Power
Figure 2
—
Electrical Specified Operating Area
vs. Case Temp, Single unit at minimum full load efficiency
DCM™ DC-DC Converter
Page 4 of 25
Rev 1.3
02/2016
vicorpower.com
800 927.9474
MDCM28AP240M320A50
Electrical Specifications
Specifications apply over all line, trim and load conditions, internal temperature T
INT
= 25ºC, unless otherwise noted.
Boldface
specifications apply over the
temperature range of -55°C < T
INT
< 125°C.
Attribute
Symbol
Conditions / Notes
Min
Typ
Max
Unit
Power Input Specification
Input voltage range
Inrush current (peak)
Input capacitance (internal)
Input capacitance (internal) ESR
Input inductance (external)
V
IN
I
INRP
C
IN-INT
R
CIN-INT
L
IN
Continuous operation
With maximum C
OUT-EXT
, full resistive load
Effective value at nominal input voltage
At 1 MHz
Differential mode, with no further line bypassing
No Load Specification
Nominal line, see Fig. 3
Input power – disabled
P
Q
Worst case line, see Fig. 3
Nominal line, see Fig. 4
Input power – enabled with no load
P
NL
Worst case line, see Fig. 4
Power Output Specification
Output voltage set point
Rated output voltage trim range
V
OUT-NOM
V
OUT-TRIMMING
ΔV
OUT-LOAD
ΔV
OUT-LL
ΔV
OUT-TEMP
V
IN
= 28 V, nominal trim, at 100% Load, T
INT
= 25°C
Trim range over temp, with > 10% rated load.
Specifies the Low, Nominal and High Trim conditions.
23.88
14.4
24.0
24.0
24.12
26.4
V
V
8.0
0.5
0.6
0.8
10.6
11.5
W
W
W
W
29.7
0.73
1
16
28
50
25.0
V
A
µF
mΩ
µH
Output voltage load regulation
Linear load line. Output voltage increase from full rated
load current to no load (Does not include light load
1.1309
regulation). See Fig. 6 and Sec. Design Guidelines
0% to 10% load, additional V
OUT
relative to calculated
load-line point; see Fig. 6 and Sec. Design Guidelines
Nominal, linear temperature coefficient, relative to
T
INT
= 25ºC. See Fig. 5 and Design Guidelines Section
The total output voltage setpoint accuracy from the
calculated ideal V
OUT
based on load, temp and trim.
Excludes
ΔV
OUT-LL
Continuous, V
OUT
≥
24.0 V
Continuous, V
OUT
≤
24.0 V
Of rated I
OUT
max. Fully operational current limit, for
nominal trim and below
The module will power limit in a fast transient event
Full load, nominal line, nominal trim
Full load, over line and temperature, nominal trim
50% load, over rated line, temperature and trim
90.2
88.2
85.7
-2.0
320
13.40
100
0.0
1.2631
1.3968
V
Output voltage light load regulation
Output voltage temperature
coefficient
V
OUT
accuracy
Rated output power
Rated output current
Output current limit
Current limit delay
4.29
-3.20
V
mV/°C
%V
OUT-ACCURACY
P
OUT
I
OUT
I
OUT-LM
t
IOUT-LIM
η
2.0
%
W
A
120
1
91.7
130
%
ms
%
%
%
Efficiency
Output voltage ripple
Output capacitance (internal)
Output capacitance (internal) ESR
Output capacitance (external)
Output capacitance (external)
Output capacitance (external)
V
OUT-PP
C
OUT-INT
R
COUT-INT
C
OUT-EXT
C
OUT-EXT-TRANS
C
OUT-EXT-
TRANS-TRIM
Over all operating steady-state line and trim conditions, 20
MHz BW, minimum C
OUT-EXT
, and at least 10 % rated load
Effective value at nominal output voltage
At 1 MHz
20 MHz bandwidth. At nominal trim, minimum C
OUT-EXT
and
at least > 10% rated load
Excludes component temperature coefficient For load
transients down to 0% rated load, with static trim
Excludes component temperature coefficient For load
transients down to 0% rated load, with dynamic trimming
250
1000
2500
738
42
0.069
2500
2500
2500
mV
µF
mΩ
µF
µF
µF
DCM™ DC-DC Converter
Page 5 of 25
Rev 1.3
02/2016
vicorpower.com
800 927.9474
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