™
Military High-Density
DC-DC Converters
50 to 100W
M I-2 0 0
Product Highlights
The MI Series is designed for Military
applications and is based on Vicor‘s
second generation family of zero-current-
switching, component level DC-DC
converters. Operating at frequencies in
excess of 1MHz, the MI Series offers
state-of-the-art performance in terms of
power density, efficiency, noise, ease
of use, and reliability.
Features:
Remote Sense
Inputs:
28Vdc per MIL-STD-704D/E
155Vdc per DOD-STD-1399A
270Vdc per MIL-STD-704D/E
Current Limit
OVP and Thermal Shutdown
Power Boosters for
Higher Power Outputs
Single Output: 1 to 95Vdc
Up to 23 W/in3
ZCS Power Architecture
Low Noise FM Control
MIL-STD-810 Environments
80-90% Efficiency
All units are manufactured under a
quality system approved to MIL-I-45208
and in ISO 9001-registered facilities.
Full epoxy encapsulation in Vicor’s
industry standard package enables the
MI Series to meet MIL-STD-810
environmental requirements for humidity,
fungus, salt, fog, explosive atmosphere,
acceleration, vibration, and shock.
Converter/Booster Specifications
(Typical at TBP = 25°C, nominal line and 75% load, unless otherwise specified)
PARAMETER
MIN
TYP
MAX
UNITS
TEST CONDITIONS
Input Characteristics
Input Voltage Range
No Load Power Dissipation
See Input Voltage Chart
1.35
Standard features such as wide output
trimming/programming, current limiting,
remote sense, output inhibit and latching
OVP and OTP combine to offer a high
degree of protection, versatility and
2
Watts
Output Characteristics
Set Point Accuracy
Load/Line Regulation
0.5%
0.05%
0.2%
0.01
1.0%
100
1%
0.2%
0.5%
0.02
V
NOM
V
LL to HL, 10% to FL
LL to HL, NL to 10%
NOM
V
NOM
Output Temperature Drift
Output Noise - pp
%/°C
reliability for military power systems.
1.5%
150
110%
V
mV
Whichever is greater
20MHz BW
NOM
Output Voltage Trimming1
Remote Sense Compensation
OVP Set Point
Current Limit
Short Circuit Current
50%
0.5
115%
105%
105%
V
NOM
Volts
125%
6
135%
125%
130%
V
Latching
Auto restart
Auto restart
NOM
I
NOM
I
NOM
Control Pin Characteristics
Gate In High Threshold
Gate In Low Threshold
Gate In Low Current
Volts
Volts
mA
0.65
0.95
6
Power Sharing Accuracy
1.05
Isolation Characteristics
Isolation (Input to Output)
Isolation (Output to Baseplate)
Isolation (Input to Baseplate)
Input/Output Capacitance
3,000
500
1,500
V
RMS
V
RMS
V
RMS
50
75
pF
Environmental (MIL-STD-810D)
Altitude - Method 500.2
Humidity - Method 507.2
Acceleration - Method 513.3
Vibration - Method 514.3
Shock - Method 516.3
70,000
86, 240
9
20
40
feet
%, hours
g's
g's
g's
Procedure II
Procedure 1, Cycle 1
Procedure 2
Procedure 1, Category 6
Procedure 1
Reliability (MIL-HDBK-217F)
25°C Ground Benign: G.B.
50°C Naval Sheltered: N.S.
864,000
111,000
81,000
hours
hours
hours
65°C Airborne Inhabited Cargo: A.I.C.
Thermal Characteristics
Efficiency
Baseplate to Sink
80-90%
0.2
°C/W
°C
°C
With Thermal Pads
Latching
See Product Grade
See Product Grade
Shutdown Temperature
Baseplate Operating Temperature
Storage Temperature
90
95
105
+85
+100
°C
Mechanical Specifications
Volume
Weight
4.35
6.0 (170)
in3
Ounces (Grams)
1
12V and 15V outputs, standard trim range ± 10%. Consult factory for wider trim range.
Fo r la t e s t Vic o r P ro d u c t In fo rm a t io n : w w w .vic r.c o m
Vers 2 10/98 1 of 2