2500 series
Single, Dual, Triple Output
DC/DC Converter
www.martekpower.com
FEATURES
• 6 sided Continuous Shielding
• Synchronization and Output Trim
• Efficiency to 86%
• Wide 2:1 Input Voltage Range
• Input Pi Filter
• UL 1950 Approved
• CSA 22.2 Approved
INPUT CHARACTERISTICS
DESCRIPTIONS
Unit/Comments
Min Typ Max
The 2500 series is a family of compact 25W, high
performance DC/DC converters which offer a wide variety of
standard input/output voltage combinations. The 2100 series
operate over 2:1 input ranges of 9 to 18, 18 to 36 or 36 to 72
VDC; providing single, dual or triple output combinations of
5, 6, 12, 15, 5, 12, 15, 5 12 and 5 15 VDC. All models have
been approved to UL 1950 and CSA 22.2 safety standards.
Optional features allow these converters to be connected
in a cascaded configuration (to extend the input voltage
range from 2:1), or parallel operation.
Input Voltage Range
12 VDC Input Models
24 VDC Input Models
48 VDC Input Models
Over Voltage Shutdown
12 VDC Input Models
24 VDC Input Models
48 VDC Input Models
Remote On / OFF Control
Supply ON
VDC
VDC
VDC
9
12 18
18 24 36
36 48 72
VDC
VDC
VDC
20
40
74
5.5 VDC or Open Circuit
0 VDCto 0.8VDC
Supply OFF
OUTPUT CHARACTERISTICS
Logic Referenced to Negative Input
Reverse Polarity Input Current
Input Filter
Amp
Pi Filter
See Model Selection
Guide
12
Min Typ Max Unit/Comments
Output Voltage Accuracy
Input Fuse Rating
1
Single & Dual Outputs
Triple Outputs- Primary
1.0 %
1.0 %
5.0 %
5.0 %
1
1
1
- Auxiliaries
Output Voltage Adjustment
Voltage Balance:
Dual Outputs
0.5 1.0 %; Equal Output Loads
50 100 mV; Equal Output Loads
10% Full Load
Triple Outputs (Auxiliaries)
Minimum Load
GENERAL CHARACTERISTICS
Line Regulation
Single Outputs
2
0.2 0.5 %
Min Typ Max Unit/Comments
2
Dual Outputs
0.4 1.0 %
Switching Frequency
Isolation Voltage
Isolation Resistance
MTBF (MIL-HBK-217F)
100
500
1000
700
kHz
2
Triple Outputs- Primary
- Auxiliaries
0.2 0.5 %
1.0 5.0 %
VDC, 1 minute
Mohm, 500VDC
Thousand Hours,
2
Load Regulation
Single Outputs
3
o
0.5 %
+25 C, Ground
3
Dual Outputs
0.5 1.0 % ; Equal Loads
Benign
3
Triple Outputs- Primary
- Auxiliaries
Ripple/Noise
5V Outputs
0.5 1.0 %
3
5.0 % ; Equal Loads
75 mV; p-p, Nom.Line FL,
20Mhz B.W. using
1 µf bypass capacitor
12V and 15V Outputs
Short Circuit Protection
1
% of Vout
Continuous, Auto-
matic Recovery
o
Temperature Coefficient
Over Voltage Protection
0.02 % per C
See Model Selection
Guide
1
= Output voltage at nominal line & FL
2
3
= Output voltage measured from minimum input line to maximum
= Output voltage measured from FL to 10% Load
Martek Power reserves the right to change specifications without notice.
B-120