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(888) IPD-CONVerters
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(888) 473-2668
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www.ipdconverters.com
OBS SERIES - 25 WATT
FEATURES
DESCRIPTION
OBS single output DC/DC converters provide up to 25
Watts of output power in an industry standard package
and footprint. The OBS units feature excellent efficiency,
six-sided shielding, and fixed switching frequency. With • 25W Output Power
100°C case operation, the OBS converters are especially • 100°C Baseplate
• Industry Standard Package
• 24 and 48V Input
Versions
• Trim And Enable Pins
• Fixed Frequency
• 1500V Isolation
• 6-Sided Shielding
suited to telecom, networking, and industrial
applications. These units are 100% surface-mount
construction and fully compatible with production board
washing processes.
Operation
Efficiency vs. Load (24V Input)
95
90
85
80
75
70
TECHNICAL SPECIFICATIONS
Input
Voltage Range
24 VDC Nominal
48 VDC Nominal
EFF. OBS025YG
EFF. OBS025YH
EFF. OBS025YJ
18 - 36 VDC
34 - 75 VDC
25 mA
Reflected Ripple
Input Reverse Voltage Protection
Shunt Diode
65
10
Output
20
30
40
50
60
70
80
90
100
LOAD %
Setpoint Accuracy
±1%
0.2% Vout
Line Regulation Vin Min - Vin Max., Iout Rated
Load Regulation Iout Min. - Iout Max., Vin Nom.
Minimum Output Current
0.5% Vout
10 % Iout Rated
25% Iout
Efficiency vs. Load (48V Input)
Dynamic Regulation, Loadstep
Pk Deviation
Settling Time
4% Vout
95
90
85
80
75
70
65
60
500
µs
Voltage Trim Range
±10% Iout Rated
Hiccup
Short Circuit / Overcurrent Protection
Current Limit Threshold Range, % of Iout Rated
OVP Trip Range
110 - 140%
115 - 140%Vout Nom.
Hiccup
EFF. OBS017ZE
EFF. OBS025ZG
EFF. OBS025ZH
OVP
General
Turn-On Time: 24 & 48Vin
10 ms
55
10
Remote Shutdown
Remote Shutdown Reference
Switching Frequency
Isolation
Positive
Vin Negative
400 kHz
20
30
40
50
60
70
80
90
100
LOAD %
Input - Output
1500 VDC
500 VDC
Input - Case (24 Vin units)
Output - Case (48 V in units)
Temperature Coefficient
Notes
500 VDC
0.03%/°C
†
MTBF predictions may vary slightly from model to model.
Case Temperature
Operating Range
Storage Range
Specifications typically at 25°C, normal line, and full load, unless otherwise
stated.
-40 to +100°C
-40 to +125°C
95%
5 g, 10 - 55 Hz
1.8 x 106 hrs
UL, CUL, TUV
1.9 oz
Humidity Max., Non-Condensing
Vibration, 3 Axes, 5 Min Each
Soldering Conditions: I/O pins, 260°C, ten seconds; fully compatible with
commercial wave-soldering equipment.
†
MTBF (Bellcore TR-NWT-000332)
Units are water-washable and fully compatible with commercial spray or
immersion post wave-solder washing equipment.
Safety
Weight (Approx.)
C-20