input
38
technical specifications
The OBS series of single output DC/DC converters provide up to 25W of output power
in the industry standard 2” x 2” package and footprint. These units feature excellent
efficiency, six sided shielding, and fixed switching frequency. With 100C case operation
possible, the OBS series are especially suited to Telecom, Networking, and Industrial
applications. These units are 100% surface mount construction, are fully compatible
with production board washing processes, and are manufactured in IPD’s ISO9001
factory.
• industry standard 2” x 2” package
• 12, 24, and 48V input versions
• 25 Watts of output power
• 100C baseplate operation
• trim and enable pins
• fixed frequency
• 1500 VDC isolation
• 6 sided shielding
turn-on time: 24 & 48VIN , 12VIN 10 ms, 300 ms (respectively)
remote shutdown positive
remote shutdown reference Vin negative
switching frequency 400 KHz
isolation
input - output 1500 VDC
input - case (24Vin units) 500 VDC
output - case (48 Vin units) 500 VDC
temperature coefficient 0.03%/°C
case temperature
operating range (12V input max temp +85°C) -40 to +100°C
storage range -40 to +125°C
humidity max, non-condensing 95%
vibration, 3 axes, 5 min each 5 g, 10-55Hz
MTBF† (Bellcore TR-NWT-000332) 1.8 x 106 hrs
safety UL 1950, CSA 22.2-950, EN60950
weight (approx.) 1.9 oz.
setpoint accuracy ±1%
line regulation VIN min. - VIN max., IOUT rated 0.2% Vo
load regulation IOUT min. - IOUT max., VIN nom. 0.5% Vo
minimum output current 10 %
dynamic regulation, loadstep 25% Io
Pk deviation 4% Vo
settling time 500 uS
voltage trim range ±10%
short circuit / overcurrent protection hiccup
current limit threshold range, %Io rated 110 - 140%
OVP trip range 115 - 140%VOUT nom.
OVP hiccup
voltage range
12 VDC nominal 10 - 20 VDC
24 VDC nominal 18 - 36 VDC
48 VDC nominal 34 - 75 VDC
reflected ripple 25 mA
input reverse voltage protection shunt diode
key features
OBS SERIES
output
general
eff. vs load (48VIN)
† MTBF predictions may vary slightly from model to model.
Specifications typically at 25°C, normal line, and full load - unless
otherwise stated.
n o t e s
888-IPD CONVerter www.ipdconverters.com
4 7 3 2 6 6 8
SINGLE
25 WATT
SINGLE
25 WATT
* max input current at minimum input voltage, maximum rated output power
** at nominal VIN, rated output
models
mechanical drawing
39
(Millimeters)(Millimeters)
(Millimeters)(Millimeters)
(Millimeters)
.X ± 0.5
.XX ± .25
± .05
888-IPD CONVerter www.ipdconverters.com
4 7 3 2 6 6 8
thermal
impedance
natural conv ection 10.3 C/W
100 LFM 7.7 C/W
200 LFM 6.3 C/W
300 LFM 5.1 C/W
400 LFM 4.0 C/W
tolerances
(unless otherwise specified)
InchesInches
InchesInches
Inches
.XX ± .020
.XXX ± .010
Pin:Pin:
Pin:Pin:
Pin:
± .002
pin function
1+VIN
2-VIN
3 no conn
4 enable
5 no pin
6+VOUT
7-VOUT
8 trim
5
6
7
8
1
3
4
2
(4.6)
.18 MIN.
(1.02)
2.00
(50.8)
∅.040
.42
(10.7)
2.00
(50.8)
.400
.400
.400
.200
.200
(5.08)
(5.08)
.100(2.54)
.100(2.54)
1.800
(45.72)
(10.16)
(10.16)
(10.16)
BOTTOM VIEW
12
12
12
24
24
24
24
48
48
48
48
10 - 20
10 - 20
10 - 20
18 - 36
18 - 36
18 - 36
18 - 36
34 - 75
34 - 75
34 - 75
34 - 75
3.90
3.80
3.80
1.15
1.95
1.90
1.90
0.60
0.94
0.92
0.92
5
12
15
3.3
5
12
15
3.3
5
12
15
5.0
2.1
1.7
5.0
5.0
2.1
1.7
5.0
5.0
2.1
1.7
75
120
150
75
75
120
150
75
75
120
150
80%
85%
86%
80%
84%
88%
87%
81%
83%
88%
88%
OBS025XG
OBS025XH
OBS025XJ
OBS017YE
OBS025YG
OBS025YH
OBS025YJ
OBS017ZE
OBS025ZG
OBS025ZH
OBS025ZJ
VIN VIN range IIN max.*VOUT IOUT rated ripple & noise efficiency model
(volts) (volts) (amps) (volts) (amps) pk-pk (mV) typ.**
Thermal impedance data is dependant
on many environmental factors. The
exact thermal performance should be
validated for specific application.
