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1500WFR series
Single and Dual Output
DC/DC Converter
FEATUREꢀ
• 15W Continuous Output Power
• Compact 1” X 2” X 0.4” Case
• Industry ꢀtandard Pin-Out
• Up to 82ꢁ Efficiency
o
o
• -25 C to +71 C Operating Temperature Range
3
• 18.75W/In Power Density
• Low Cost
INPUT CHARACTERIꢀTICꢀ
DEꢀCRIPTIONꢀ
Unit/Comments
Min Typ Max
The 1500WFR series is a family of low cost single and dual
output 15W DC/DC converters specifically designed for space-
critical applications. These models operate from wide (2:1)
input voltage ranges of 18 to 36 or 36 to 72 VDC; and provide
regulated outputs of 5, 12, 15, 12 or 15 VDC. ꢀtandard
features include 500 VDC input/output isolation, an internal
input filter, line/load regulation of 1.0ꢁ and a minimum switch-
ing frequency of 190 kHz. All models are packaged in compact,
low profile 1” X 2” X 0.4” inch metal case. This miniature size
Input Voltage Range
24 VDC Input Models
48 VDC Input Models
Input Filter
VDC
VDC
Pi Networks
18 24 36
36 48 72
3
yields a power density as high as 18.75 watts/in . Operation is
o
specified over the full operating temperature range of -25 C to
o
+71 C. Cooling is by free-air convection.
OUTPUT CHARACTERIꢀTICꢀ
GENERAL CHARACTERIꢀTICꢀ
Min Typ Max Unit/Comments
Min Typ Max Unit/Comments
Output Voltage Accuracy
1.0 %; Output voltage at
nominal line & FL
Switching Frequency
Isolation Voltage
Isolation Resistance
190
500
kHz
VDC, 1 minute
Mohm, 500VDC
Output Voltage Balance
Dual Outputs
Minimum Load
Line Regulation
Load Regulation
Ripple/Noise
1000
1.0 %; Equal Output Loads
10% of Full Load
1
0.2 %
1.0 %
2
100 mV p-p, Nom.Line FL,
20Mhz B.W. using
1 μf bypass capacitor
500 μS to within 1% error
band for 25% step load
change
Transient Response
o
Temperature Coefficient
Short Circuit Protection
0.02 % per C
Current Limit,
Continuous
1
= % Output voltage measured from min. input line to maximum at 100% Load.
= Output voltage measured from 25% Load to 100% Load, at Nominal Line.
2
>> 1
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