OBD SERIES - DUAL OUTPUT, 25 WATT
DESCRIPTION
FEATURES
• Trim and Enable Pins
• 6-Sided Shielding
• 1500V Isolation
OBD dual output DC/DC converters provide up to 25 watts • Industry Standard Package
of output power in an industry standard package and • 48V Input
footprint. These units feature excellent efficiency, six-sided • Fixed-Frequency Design
shielding, and fixed switching frequency. With 100°C case • 100°C Case Operation
operation, the OBS series is well suited to telecom,
networking, and industrial applications. The OBD series is
100% surface-mount construction and fully compatible with
production board washing processes.
Efficiency vs. Load (24V Input)
90
85
80
75
70
65
TECHNICAL SPECIFICATIONS
Input
EFF. OBD25YJJ
EFF. OBD25YHH
Voltage Range
48 VDC Nominal
Reflected Ripple
Input Reverse Voltage Protection
34 - 75 VDC
25 mA
Shunt Diode
10
20
30
40
50
60
70
80
90
100
Output
LOAD %
Setpoint Accuracy
±±1
Line Regulation V Min. - V Max., I
Rated
0.21 V
0.51 V
out
in
in
Min. - I
out
Max., V Nom.
out
Load Regulation I
Minimum Output Current
Efficiency vs. Load (48V Input)
out
out
in
±0 1 I
Rated
out
100
90
80
70
60
50
40
Dynamic Regulation, Loadstep
Pk Deviation
Settling Time
251 I
41 V
out
out
500 ms
±±01
Voltage Trim Range
Short Circuit / Overcurrent Protection
Current Limit Threshold Range, 1 of I
OVP Trip Range
Hiccup
±±0 - ±401
Rated
out
±±5 - ±401 V
Nom.
Second Control Loop
EFF. OBD025ZJJ
EFF. OBD025ZGG
EFF. OBD025ZHH
out
OVP and UVP Type
General
Turn-On Time: 24 & 48V Input
Remote Shutdown
Remote Shutdown Reference
Switching Frequency
Isolation
±0 ms
Positive
Negative
400 kHz
10
20
30
40
50
60
70
80
90
100
LOAD %
V
in
Notes
Input - Output
±500 VDC
±050 VDC
500 VDC
0.031/°C
Input - Case (±2 V and 24 V units)
†
in
in
MTBF predictions may vary slightly from model to model.
Industrial temp range available.
Output - Case (48 V units)
in
††
Temperature Coefficient
Case Temperature
Specifications typically at 25°C, normal line, and full load, unless
otherwise stated.
Operating Range (±2V Input Max. Temp +85°C)
Storage Range
-40 to +±00°C
-40 to +±25°C
5 g, ±0 - 55 Hz
Soldering Conditions: I/O pins, 260°C, ten seconds; fully
compatible with commercial wave-soldering equipment.
Vibration, 3 Axes, 5 Min. Each
6
†
MTBF (Bellcore TR-NWT-000332)
±.9 x ±0 hrs
Safety
Weight (Approx.)
UL, cUL, TUV
±.4 oz
Units are water-washable and fully compatible with commercial
spray or immersion post wave-solder washing equipment.
REV. 01/31/02
1