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1200H series
Dual Output
DC/DC Converter
FEATURES
• Low Output Ripple and Noise
• 6 sided Continuous Shielding
o
o
• -40 C to +75 C Operating Temperature Range
0.03% Line/Load Regulation
•
• Short Circuit Protection
• >1,000,000 Hours MTBF
INPUT CHARACTERISTICS
DESCRIPTIONS
Unit/Comments
Min Typ Max
The 1200H series 12 watts, low noise high density DC/DC
converters offer a wide variety of input voltages in 5, 12, 18,
24, 28 and 48 VDC with high performance output characteris-
tics. The low profile modular case (2.0” X 2.0” X 0.4”) makes
the 1200H series attractive for printed circuit board mounting
applications for I/O computer subsystems, instruments,
telecommunication equipment, medical and analog
networks where low noise output and excellent line and load
regulation is required.
Input Voltage
5 VDC Input Models
12 VDC Input Models
18 VDC Input Models
24 VDC Input Models
28 VDC Input Models
48 VDC Input Models
Input Fuse Requirements
5 VDC Input Models
12 VDC Input Models
18 VDC Input Models
24 VDC Input Models
28 VDC Input Models
48 VDC Input Models
Reverse Polarity Input
Current
VDC
VDC
VDC
VDC
VDC
VDC
4.65
5
5.25
10.9 12 1ꢀ.2
16.4 18 19.8
21.6 24 26.4
25.2 28 ꢀ0.8
4ꢀ.2 48 52.8
mA;Slow blow type
mA;Slow blow type
mA; Slow blow type
mA;Slow blow type
mA;Slow blow type
mA;Slow blow type
Amp
5000
2500
2000
1500
1000
750
OUTPUT CHARACTERISTICS
Min Typ Max Unit/Comments
5
Output Voltage Set Point
Output Voltage Balance
Line Regulation
0.5 1.0 % Output voltage at
nominal line & FL
50 mV; Equal Output
Loads
Input Filter
Pi Filter
0.1 0.ꢀ % Output voltage
measured from
min. input line to
maximum
0.1 0.ꢀ % Output voltage
measured from FL
to 10% load
GENERAL CHARACTERISTICS
Load Regulation
Ripple/Noise
Min Typ Max Unit/Comments
Switching Frequency
Isolation Voltage
Isolation Resistance
Isolation Capacitance
MTBF (MIL-HBK-217F)
125
kHz
1000
1000
VDC, 1 minute
Mohm, 500VDC
pF, 100kHz, 1Volt
Million Hours,
15 mV p-p, Nom.Line
@FL, 20MHz B.W.,
using 1 μf bypass
capacitor
100
1
o
+25 C, Ground
Benign
Short Circuit Protection
Limited,
Automatic Recovery
Temperature Response
Deviation
Transient Recovery Time
5
% deviation of Vout
for a 25% load change
20 μS for 25% load
change, to within 1%
o
Temperature Coefficient
0.01 % per C
>> B-111