24/
28V
, 48V,
270
/300V, 375V
Military 2nd Generation DC-DC Converters
Features
24/
28
and
270
/300Vdc compliant
to MIL-STD-704E
Single output: 2 – 48Vdc
MIL-STD-810 environments
Operating temperatures
from -55°C to 100°C
ZVS/ZCS power architecture
Environmental stress screening
Programmable output: 10 to 110%
Power density: Up to 100W/in
3
OVP and thermal shutdown
Input undervoltage lockout
Parallelable for increased power
Product Highlights
Vicor’s 2nd Generation DC-DC
converters represent a quantum
leap in the performance and
flexibility of power components.
With advanced power processing,
control, and packaging technologies,
power density has tripled while
reducing the cost per Watt of
processed power. A high level of
silicon integration reduces parts
count to less than a third of
1st Generation converters,
increasing reliability.
Fully encapsulated, Vicor 2nd
Generation modules utilize a
proprietary spin fill process that
assures complete, void free
encapsulation making them
suitable for the most harsh
military environments. Two
military grades (H & M) are
available with temperatures to
-55°C operating and -65°C
storage. H & M-grade modules
have been subjected to the
environmental testing requirements
of MIL-STD-810, MIL-S-901, and
MIL-STD-202 and undergo 100%
environmental stress screening.
Input Voltage
Nominal
24V
48V
300V
375V
Range
18 – 36V
36 – 75V
180 – 375V
250 – 425V
Transient
50V 100mS
100V 100mS
400V 100mS
500V 100mS
MIL Compliance
MIL-STD-704E for 28Vin
MIL-STD-704E for 270Vin
Part Numbering
Maxi Converter Example:
V300A48M500AL
300Vin, maxi, 48Vout @ 500W, long pins
Mini Converter Example:
V300B15M250AL
300Vin, mini, 15Vout @ 250W, long pins
Micro Converter Example:
V300C24M150A
300Vin, micro, 24Vout @ 150W, short pins
V 300
A
48
M
Product Grade
H = –40°C to +100°C
M = –55°C to +100°C
500
Output
Power
A
L
Pin Style
Blank = Short Solder
L = Long Solder
S = Short ModuMate
1
N = Long ModuMate
1
Baseplate
Blank = Slotted
2 = Threaded
3 = Thru-hole
Input Package Output
Voltage
A = Maxi
Voltage
B = Mini
C = Micro
1
Compatible with InMate and SurfMate socketing systems.
24Vin Series
Output Voltage (Vdc)
2V
3.3V
5V
12V
15V
24V
28V
48V
Output
Maxi
160
264
400
400
400
400
400
400
Output
Maxi
160
264
400
500
500
500
500
500
Power (Watts)
Mini
Micro
80
40
132
75
200
100
200
100
200
100
200
100
200
100
200
100
Power (Watts)
Mini
Micro
100
50
150
75
200
100
250
150
250
150
250
150
250
150
250
150
48Vin Series
Output Voltage (Vdc)
2V
3.3V
5V
12V
15V
24V
28V
48V
Output
Maxi
160
264
400
500
500
500
500
500
Output
Maxi
160
264
400
600
600
600
600
600
Power (Watts)
Mini
Micro
100
50
150
75
200
100
250
150
250
150
250
150
250
150
250
150
Power (Watts)
Mini
Micro
100
50
150
75
200
100
300
150
300
150
300
150
300
150
300
150
300Vin Series
Output Voltage (Vdc)
2V
3.3V
5V
12V
15V
24V
28V
48V
375Vin Series
Output Voltage (Vdc)
2V
3.3V
5V
12V
15V
24V
28V
48V
8
Contact factory or see vicorpower.com for model number of units in red.
Specifications
General Specifications
PARAMETER
Input Characteristics
Undervoltage turn-on
MIN
24V
48V
300V
375V
24V
48V
300V
375V
24V
48V
300V
375V
(See vicorpower.com for model specific data sheets)
TYP
MAX
17.9
35.7
178.2
247.5
UNITS
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
%
%/°C
%
% Vnom
% Iout
% Iout
Low line to high line; full load
Over operating temperature range
10 to 100% of full load
For trimming below 90% of
nominal, a minimum load
may be required.
Output voltage 95% of nominal
Output voltage < 250mV
Complies with reinforced
insulation requirements
Complies with basic
insulation requirements
Complies with operational
insulation requirements
NOTES
Undervoltage turn-off
Overvoltage turn-off/on
14.74
29.4
147.4
204.7
36.3
75.7
429.2
17.5
34.9
174.6
242.5
15.3
30.5
152.8
212.2
37.8
78.8
Not Included
446.3
±0.02
±0.002
±2
39.6
82.5
467.5
±0.20
±0.005
±5
110
Output Characteristics
Line regulation
Temperature regulation
Power sharing accuracy
Programming range
Current limit
Short circuit current
Isolation Characteristics
Isolation voltage (in to out)
Isolation voltage (in to base)
Isolation voltage (out to base)
Isolation resistance (in to out)
3000
1550
500
10
115
115
Vrms
Vrms
Vrms
10
RATING
Megohms
UNIT
°C
°C
°C
°C
°C
NOTES
Baseplate
Baseplate
Thermal Characteristics
Operating temperature (H-grade)
Storage temperature (H-grade)
Operating temperature (M-grade)
Storage temperature (M-grade)
Temperature limiting (typical)
Environmental Stress Screening
See page 30 for details
-40
-55
-55
-65
to +100
to +125
to +100
to +125
115
Control Functions - PC Pin
+In
Module Enable/Disable.
The module may
be disabled by pulling PC below 2.3V with
respect to the –Input. This may be done
with an open collector transistor, relay, or
optocoupler. Multiple converters may be
disabled with a single transistor or relay
either directly or via “OR’ing” diodes.
See Figure 1.
Module Alarm.The
module contains
“watchdog” circuitry which monitors input
voltage, operating temperature, and internal
operating parameters. In the event that any
of these parameters are outside of their
allowable operating range, the module will
shut down and PC will go low. PC will
periodically go high and the module will
check to see if the fault (as an example,
overtemperature) has cleared. If the fault
has not been cleared, PC will go low again
and the cycle will restart. The SC pin will
go low in the event of a fault and return to
its normal state after the fault has been
cleared.
See Figures 2 and 3.
PC
Disable
PR
–In
Disable = PC <2.3V
Figure 1 – Module enable/disable
+In
SW1
Auto
Restart
2-20ms typ.
f (VIN)
Input Undervoltage
Input Overvoltage
Overtemperature
Module Faults
50Ω
SW2
SW3
1K
+Out
+S
SC
–S
PC
SW1, 2, & 3
shown in
"Fault" position
PR
–In
5.7Vdc
(0-3mA)
1.23
Vdc
6K
–Out
Figure 2 – PC/SC module alarm logic
Fault
PC
5.7V
40µs typ.
SC
1.23V
2-20ms typ.
Figure 3 – PC/SC module alarm timing
9
Control Functions - SC Pin
Output Voltage Programming.
The output voltage of the converter can be adjusted or
programmed via fixed resistors, potentiometers, or voltage DACs.
See Figures 4 and 5.
+Out
+Out
R
U
Trim Up
Error
Amp
1kΩ
0.033µF
SC
R
D
Trim Down
Load
Error
Amp
1kΩ
0.033µF
SC
Load
–Out
1.23V
1.23V
–Out
+Out
+S
Error
Amp
1kΩ
0.033µF
SC
–S
–Out
1.23V
1.23V
R
D
Trim Down
Load
Error
Amp
1kΩ
0.033µF
+Out
+S
SC
–S
–Out
R
U
Trim Up
Load
R
D
(ohms) =
1,000 Vout
Vnom - Vout
R
U
(ohms) =
1,000
(Vout-1.23)
Vnom
1.23
(Vout-Vnom)
– 1,000
Figure 4 – Output voltage trim-down circuit
(Micro inset)
Figure 5 – Output voltage trim-up circuit
(Micro inset)
Trim-Down.
1. This converter is not a constant power
device – it has a constant current limit.
Hence, available output power is reduced
by the same percentage that output
voltage is trimmed down. Do not exceed
maximum rated output current.
2. The trim-down resistor must
be connected to the –Sense pin
(–Out pin on a micro).
Trim-Up.
1. The converter is rated for a maximum
delivered power. To ensure that
maximum rated power is not
exceeded, reduce maximum output
current by the same percentage
increase in output voltage.
2. The trim-up resistor must be
connected to the +Sense pin.
(+Out pin on a micro).
3. Do not trim the converter above
maximum trim range (typically +10%)
or the output overvoltage protection
circuitry may be activated.
Control Functions - PR Pin
Note:
Please consult the
appropriate Vicor Design
Guide for additional
information regarding the
use of these products.
Parallel Operation.
The PR pin supports paralleling for
increased power with N+1 (N+M)
redundancy and phased array capability.
Modules of the same input voltage,
output voltage, and power level will
current share if all PR pins
are suitably interfaced.
Compatible interface architectures include:
DC coupled single-wire interface.
All PR
pins are directly connected to one
+In
PC
another. This interface supports current
sharing but is not fault tolerant. Minus In
pins must be tied to the same electric
potential.
See Figure 6.
AC coupled single-wire interface.
All PR
pins are connected to a single communication
bus through 0.001µF (500V) capacitors.
This interface supports current sharing
and is fault tolerant except for the
communication bus.
See Figure 7.
+In
0.001µF
Module 1
PC
Module 1
PR
–In
PR
–In
+In
PC
PR
–In
+In
Module 2
(up to 12)
0.001µF
PC
PR
–In
Module 2
(up to 12)
Ground plane
Ground plane
10
Figure 6 – DC coupled single-wire interface
Figure 7 – AC coupled single-wire interface
Mechanical Drawing
Converter Pins
No. Function Label
1
2
3
4
5
6
7
8
9
+In
Primary
Control
Parallel
–In
–Out
–Sense
Secondary
Control
+Sense
+Out
Pin Styles
Tin/Lead
Hot Solder Dip
(Pin Style 1&2)
Gold Plated Copper
(Pin Style S&N)
0.400
10,16
Maxi
0.300±0.015
7,62±0,38
0.23
(REF)
5,8
2.20
55,9
1.74
44,2
0.50
±0.02
12,7
±0,5
+
0.01
4-40 UNC-2B
0.12* 0.20**
Thru (4X)***
3,1 5,08
(Style 2 and 3 only)
0.50
12,7
2.00
50,8
0.10
2,5
0.10
X 45°
2,5
CHAMFER
PC
PR
–
–
–S
SC
+S
+
0.300±0.015
7,62±0,38
1
2
3
4
0.38
(2X)
9,6
(ALL MARKINGS THIS SURFACE)
9
8
7
6
5
0.700
17,78
1.000
25,40
1.400
35,56
ALUMINUM
BASEPLATE
4.200
106,68
4.60
116,8
1.80
45,7
FULL R (6X)
3.60
91,4
0.13
(6X)
3,3
Slotted (Style 1)
or
Threaded (Style 2)
4-40 UNC-2B (6X)
0.180
DIA,(2X)
4,57
0.080
DIA,(7X)
2,03
0.43
10,9
R
0.06
(3X)
1,5
0.54
(9X)
Pin Style 1&S
13,7
(Short Pin)
0.62
(9X)
Pin Style 2&N
15,7
(Long Pin)
2.20
55,9
(REF)
Use a
4-40 Screw (6x)
Torque to:
5 in-lbs
0.57 N-m
or
Thru Hole (Style 3)
#30 Drill Thru (6X)
(0.1285)
* Style 1 baseplate only
** Style 2 & 3 baseplates
*** Reserved for Vicor accessories
Not for mounting
Converter Pins
No. Function Label
1
+In
+
Primary
2
PC
Control
3
4
5
6
7
8
9
Parallel
–In
–Out
–Sense
Secondary
Control
+Sense
+Out
Pin Styles
Tin/Lead
Hot Solder Dip
(Pin Style 1&2)
Gold Plated Copper
(Pin Style S&N)
PR
–
–
–S
SC
+S
+
Mini
0.23
(REF)
5,8
0.300
±0.015
7,62
±0,38
2.20
55,9
1.74
44,2
style 2 & 3
baseplates only
(4X)***
0.12* 0.20**
3,1 5,1
0.01
0.49
12,4
2.000
50,80
0.10
2,5
0.10
X 45˚
2,5
CHAMFER
.300
±0.015
7,62
±0,38
1
(ALL MARKINGS
THIS SURFACE)
2
3
4
1.900
48,26
0.35 (2X)
8,8
ALUMINUM
BASEPLATE
2.28 1.30
57,9 33,0
0.65
16,5
FULL R (6X)
0.130
3,30
(6X)
9
8
7
6
5
Use a 4-40 Screw (6X)
Torque to:
5 in-lbs
.57 N-m
0.400
10,16
0.700
17,78
1.000
25,40
1.400
35,56
0.150 DIA,(2X)
3,81
0.080 DIA,(7X)
2,03
0.43
10,9
0.06
R
(3X)
1,5
0.54
(9X)
Pin Style 1&S
13,7
(Short Pin)
0.62
(9X)
Pin Style 2&N
15,7
(Long Pin)
2.20
55,9
(REF.)
Converter Pins
No. Function Label
1
2
3
4
5
6
7
+In
Primary
Control
Parallel
–In
–Out
Secondary
Control
+Out
Pin Styles
Tin/Lead
Hot Solder Dip
(Pin Style 1&2)
Gold Plated Copper
(Pin Style S&N)
+
PC
PR
–
–
SC
+
Micro
0.235±.015
5,97±0,38
(REF)
0.800
20,32
0.525
13,34
style 2 & 3
baseplates only
(4X)***
0.01
0.275
0.12* 0.20**
3,1 5,08
0.49
12,4
6,99
1.27
32,3
0.490
±.015
1
(ALL MARKINGS THIS SURFACE)
2
3
4
12,45
±0,38
(REF)
0.27
(2X)
6,9
0.65
16,5
1.30
33,0
0.09
2,3
0.10
X 45˚
2,5
CHAMFER
0.350±.015
8,89±0,38
(REF)
2.000
50,80
ALUMINUM
BASEPLATE
2.28
57,9
FULL R (6X)
0.13
(6X)
3,3
7
6
5
0.080
DIA. (7X)
2,03
0.400
10,16
1.04
26,4
1.45
36,8
0.43
10,9
0.54
(7X)
13,7
R
0.06
(3X)
1,5
0.21
5,2
(REF)
Pin Style 1&S
(Short Pin)
1.45
36,8
(REF.)
Use a
4-40 Screw (6x)
Torque to:
5 in-lbs
0.57 N-m
0.62
(7X)
Pin Style 2&N
15,7
(Long Pin)
11
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