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INPUT CHARACTERISTICS
OUTPUT CHARACTERISTICS
Unit/Comments
Unit/ Comments
2
Voltage & Current Ratings
See Model Selection Guide
28 VDC
Input Voltage, Nominal
1
Output Voltage Accuracy
Single/Dual Output Models
Triple Output Models
18 VDC to 36 VDC
Input Voltage range
1%, Max.
4%, Max.
5%
Per Mil-STD-704D and MIL- STD-1275A
Dual input(π )Pi Network.
Differential and common mode
type. Meets the requirements of
FCC 20780 Class B for computing
dervices. Meets requirements of
MIL-STD-461C, CE01.
12A, Max.
Input Surge
Input Filter
3
Voltage Adjustment
4
Voltage Balance
Dual Outputs
2%, Max.
4%, Max.
1% Pk-Pk of Vout
Triple Outputs (Aux. Outputs)
Ripple & Noise, 20 MHz BW
Line Regulation
Single Output Models
Dual Output Models
Triple Output Models: Primary
Aux.
Reverse Polarity Input Current
Short Circuit Current Limit
Overvoltage Shutdown
Undervotlage Shutdown
Transient Protection
Remote On/Off control
Supply On
Supply Off
Logic Input Reference
Logic Compability
0.5%, Max.
0.5%, Max.
0.5%, Max.
1.0%, Max.
150% of Current Input
> 50 VDC
8 VDC
600W @ 1 mSec
Load Regulation
Single Output Models
Dual Output Models
Triple Output Models:Primary
Aux.
0.5%, Max.
1.0%, Max.
5.5 VDC or Open Circuit
0 VDC to 0.8 VDC
Negative (-) Input
TTL Open Collector or CMOS Open
Drain
0.5%, Max.
1.0%, Max.
Min. Load
10% of Full Load
o
Temperature Coefficient @ FL
Temperature Coefficient Balance
0.02%/ C, Max.
32 mA
Standby Current
1%
5
Transient Recovery Time
100 μSec Max. to 1%of Final
value
Short Circuit Protection
Over Voltage Protection
All outputs, by input current
limiting
See Model Selection Guide
GENERAL CHARACTERISTICS
Unit / Comment
See Model Selection Guide
6
Efficiency
Isolation Voltage Isolation 1000 VDC, Min; Primary to sec. for
1 min. per MIL-STD-202F, Method 301.
Isolation Resistance
100 MOhms per MIL-STD-202F,
Method 302, Test condition B
Per MIL-STD-810E, Method 513.4,
Prodedure II. Operation test
(centrifuge) 12g’s (Manned Aerospace
Vehicles).
Per MIL-STD-810E, Method 516.4,
Procedure I. Functional shock 40g’s.
Per MIL-STD-810E, Method 514.4,
Prodedure I, Cat 6 (equipment
installed in Helicopters)
Acceleration
SPECIFIATION NOTES
Shock
1
= The max. input range of 16 to 50 VDC is specified for 250 mS (Per
MIL-STD-704D).
Vibration
2
= Total output power should not exceed 16W. The load on
any auxiliary output should not exceed 500 mA.
= Outputs are adjustable on single and dual output units only.
= Voltage balance is measured with balanced loads applied.
= Transient response is measured on the primary output for a 50%
load change (50% load to full load).
3
4
5
Altitude
Per MIL-STD-810E, Method 500.3,
Prodedure III. Rapid decompression,
40K ft.
Humidity
Per MIL-STD-810E, Method 507.3,
Procedure I. Natural non-hazardous
items, cycle 1,240 Hrs.
6
7
= Efficiency is specified at nominal input line and full load.
o
= These converters have a thermal resistance of 2.1 C/W (Internally
dissipated). The internal thermal protection circuits are trigged if
Switching Frequency
100 kHz, Min.
o
the case temperature exceeds 95 C. Maintaining the module case
o
temp. below 95 C can be accomplished by mounting a low
thermal resistance heat sink (with vertically orientated fins) to the
case with a thermally conductive compond. This will significantly
increase heat transfer from the module to the ambient. Forced
convection cooling can also be used. The amount of cooling will
depend upon the flow of air in linear feer per minute (LFM) over
the module.
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