Data Sheet © Artesyn Technologies® 2002

The information and specifications contained in this data sheet are believed to be correct at time of publication. However, Artesyn Technologies accepts no responsibility for consequences arising

from printing errors or inaccuracies. Specifications are subject to change without notice. No rights under any patent accompany the sale of any such product(s) or information contained herein.

For the most current data and application support visit www.artesyn.com/powergroup/products.htm

Notes

1

Latching OVP response time is 2ms (typ.). OVP latch is reset by toggling

the control input, or by cycling the input voltage.

2

User must provide recommended fuses in order to comply with safety

approvals.

3

Meets both level A and level B conducted emissions only with external

components connected before the input pins to the converter.

4

Maximum temperature on hotspots not to exceed 110ºC. See Application

Note 127 on Artesyn Technologies website www.artesyn.com.

5

See the long form data sheet for derating curves.

6

For stable operation connect an external output capacitor of at least 100µF

to each output. Recommended capacity AVX TPS series

(e.g. TPSD107*010#0100) or equivalents.

7

Active low remote ON/OFF, is available. Standard product is active high.

Designate with the suffix ‘-R’ e.g. EXB50-48D05-3V3-R.

8

Maximum total current from the module is 15A for EXB50-48D05-3V3 and

17A for EXB50-48D3V3-1V8 with airflow.

EXB50 Dual Series

Dual positive output

DC/DC CONVERTERS

50W High Efficiency DC/DC Converters

2

Please consult our website for the following items:

Application Note

Longform Data Sheet

www.artesyn.com

File Name: EXB50D.PDF Rev: 10 June 2002

INPUT

OUTPUT VOLTAGE

TYPICAL

MODEL

VOLTAGE

1

2

1

2

1

2

EFFICIENCY

36-75VDC

3.3V

1.8V

8.5A

8.5A

4.12V

2.34V

86.4%

EXB50-48D3V3-1V8

36-75VDC

5V

3.3V

7.5A

7.5A

6.25V

4.12V

89%

EXB50-48D05-3V3

1.900

(48.26)

2.280

±0.02

(57.91

±0.5)

Ø0.040

±0.002

(Ø1.02

±0.05)

9 Places

Max open-frame

converter height

All dimensions in inches (mm)

General tolerance

±0.01in (±0.25mm)

except where specified otherwise

Minimum clearance from

bottom of converter to

lowest component

Control

Vin-

Vin+

Vo1+

Vo1-

Trim2

Trim1

Vo2-

Vo2+

BOTTOM VIEW

CAUTION: Hazardous internal voltages and high temperatures.

Ensure that unit is not user accessible.

PROTECTION

Short circuit protection

Continuous

Overvoltage protection

Latching

Thermal protection

125°C with

automatic recovery

TELECOM SPECIFICATION

Central office interface A

ETS300-132-2 input voltage

and current requirements

PIN CONNECTIONS

PIN NUMBER

FUNCTION

1- Vin

2

No Pin

3

Remote ON/OFF

4+ Vin

5

Vo1 Trim

6

Vo1 Return

7

Vo1+

8

Vo2 Trim

9

Vo2 Return

10

Vo2+

TRIM

UP

TRIM

- OUT

+ OUT

- OUT

TRIM

TRIM

DOWN

TRIM

+ OUT

EXTERNAL OUTPUT TRIMMING