OBS025ZG - Power-One - Datasheet.Directory

High Density - Board Mounted Power Division

Powering Communications and Technology

10 20 30 40 50 60 70 80 90 100

LOAD %

EFFICIENCY %

EFF. OBS017ZE

EFF. OBS025ZG

EFF. OBS025ZH

Efficiency vs. Load (48V Input)

10 20 30 40 50 60 70 80 90 100

LO AD %

EFFICIENCY %

EFF. OBS025YG

EFF. OBS025YH

EFF. OBS025YJ

Efficiency vs. Load (24V Input)

• Trim And Enable

Pins

• Fixed Frequency

• 1500V Isolation

• 6-Sided Shielding

DESCRIPTION

FEATURES

OBS SERIES

25 WATT

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 100°C

case operation, the OBS converters are especially suited to

telecom, networking, and industrial applications. These

units are 100% surface-mount construction and fully

compatible with production board washing processes.

• Industry standard package

• 24 and 48V input versions

• 25W output power

• 100°C baseplate operation

General

Turn-On Time: 24 & 48Vin 10 ms

Remote Shutdown Positive

Remote Shutdown Reference Vin Negative

Switching Frequency 400 kHz

Isolation

Input - Output 1500 VDC

Input - Case (24 Vin units) 500 VDC

Output - Case (48 V in units) 500 VDC

Temperature Coefficient 0.03%/°C

Case Temperature

Operating Range -40 to +100°C

Storage Range -40 to +125°C

Humidity Max., Non-Condensing 95%

Vibration, 3 Axes, 5 Min Each 5 g, 10 - 55 Hz

MTBF†(Bellcore TR-NWT-000332) 1.8 x 106hrs

Safety UL, cUL, TUV

Weight (Approx.) 1.9 oz

TECHNICAL SPECIFICATIONS

Input

Voltage Range

24 VDC Nominal 18 - 36 VDC

48 VDC Nominal 34 - 75 VDC

Reflected Ripple 25 mA

Input Reverse Voltage Protection Shunt Diode

Output

Setpoint Accuracy ±1%

Line Regulation Vin Min - Vin Max., Iout Rated 0.2% Vout

Load Regulation Iout Min. - Iout Max., Vin Nom. 0.5% Vout

Minimum Output Current 10 % Iout Rated

Dynamic Regulation, Loadstep 25% Iout

Pk Deviation 4% Vout

Settling Time 500 µs

Voltage Trim Range ±10% Iout Rated

Short Circuit / Overcurrent Protection Hiccup

Current Limit Threshold Range, % of Iout Rated 110 - 140%

OVP Trip Range 115 - 140%Vout Nom.

OVP Hiccup

Notes

†MTBF predictions may vary slightly from model to model.

Specifications typically at 25°C, normal line, and full load,

unless otherwise stated.

Soldering Conditions: I/O pins, 260°C, ten seconds; fully

compatible with commercial wave-soldering equipment.

Units are water-washable and fully compatible with commercial

spray or immersion post wave-solder washing equipment.

MECHANICAL DRAWING

Thermal Impedance

Natural Convection 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

Note:

Thermal impedance data is

dependent on many environmental

factors. The exact thermal

performance should be validated

for specific application.

Pin Function

1+V

2-V

3 No Conn.

4 Enable

5 No Pin

6+V

out

7-V

out

8 Trim

Inches: (Millimeters)

.XX ± 0.020 .X ± 0.5

.XXX ± 0.010 .XX ± 0.25

Pin:

± 0.002 ± 0.05

Case:

+ 0.04, - 0.00 + 1.0, - 0.00

(Dimensions as listed unless

otherwise specified.)

OBS SERIES

25 WATT

MODELS - (See the last page of Section for options.)

-0.100"(-2.5mm)

0.300"(7.6mm)

0.700"(17.8mm)

1.100"(27.9mm)

0.200"(5.1mm)

0.400"(10.2mm)

0.600"(15.2mm)

-0.50"(-12.7mm)

(50.8mm)

2.00"

(50.8mm)

2.00"

(1.0mm)

DIA 0.040"

(10.7mm)

0.42"

(4.6mm)

0.18" MIN.

BOTTOM VIEW

(-2.5mm)

-0.10"

(45.7mm)

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High Density - Board Mounted Power Division

Powering Communications and Technology

OPTIONS

When ordering equipment options, use the following suffix information. Select the option(s) that you prefer and

add them to the model number. Example ordering options are located below the options table.

Example Options:

HBS050ZG-ANT3V = HBS050ZG-A with negative logic, Lucent compatible trim, and 0.95” vertical heatsink.

LES015YJ-3N = LES015YJ with optional trim and enable, negative logic.

QBS066ZG-AT8 = QBS066ZG-A with Lucent compatible trim and 0.110” pin length.

NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not authorized for use as critical components in life support systems, equipment used

in hazardous environments, or nuclear control systems without the express written consent of the President of Power-One, Inc.

TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manu-

factured. Specifications are subject to change without notice.

OPTIONS SUFFIX APPLICABLE SERIES REMARKS

Negative Logic N HAS, HBD, HBS, HES, HLS, LES, TTL "Low" Turns Module ON

QBS, QES, QLS, TES, TQD TTL "High" Turns Module OFF

Lucent Compatible Trim T

HAS, HBD, HBS, HES, HLS, QBS, QES,

QLS

Terminal Strip TS XWS, XWD, XWT

Trim 1 IAS, LES

Enable 2 IAD, IAS, LES, SMS

Trim and Enable 3 IAS, LES

Current Share 4 SMS

Headerless Y Encapsulated EWS, IWS, OWS

PIN LENGTH AND HEATSINK

OPTIONS

Standard Pin Length is 0.180"

(4.6mm)

0.110" (2.8mm) Pin Length 8 All Units (Except SMS)

0.150" (3.8mm) Pin Length 9 All Units (Except SMS)

0.24" (6.1mm) Horizontal Heatsink 1H