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

Notes

1

True latching OVP is available as an option. Please add the suffix ‘-V’ to the

model number, e.g. EXA40-24S1V8-V. Additional alphanumeric suffixes

maybe added to indicate minor modifications not affecting the safety

approvals.

2

Guaranteed minimum output voltage range.

3

Latching OVP response time is 1ms (typical). OVP latch is reset by toggling

remote ON/OFF or by recycling the input voltage.

4

Figures are percentage of minimum input voltage.

5

Rshort

≤20mΩ.

6

TVS spec : 6V8 @ 10mA, 10V5 @ 57A

4V1 @ 1mA, 7V3 @ 50A

7

Maximum continuous output power.

40 Watts for S05 models

26.4 Watts for S3V3 models

22 Watts for S2V75 models

14.4 Watts for S1V8 models.

8

User must provide recommended fuses in order to comply with safety

approvals.

9

Maximum temperature on components Q100, Q102 and Q103 not to

exceed 120

EXA40 Series

Single output

DC/DC CONVERTERS

40W High Efficiency DC/DC Converters

2

Please consult our website for the following items:

Application Note

Shortform Data Sheet

www.artesyn.com

File Name: LF_EXA40.PDF Rev: 15 Jan 2002

INPUT

OUTPUT

NOMINAL

OUTPUT

TYPICAL

MODEL

VOLTAGE

OUTPUT VOLTAGE

CURRENT (MAX.)

EFFICIENCY

18-36VDC

1.5 to 2.0V

1.8V

8.0A

84%

EXA40-24S1V8

18-36VDC

2.5 to 3.0V

2.75A

8.0A

87%

EXA40-24S2V75

18-36VDC

3.0 to 3.6V

3.3V

8.0A

88%

EXA40-24S3V3

18-36VDC

4.5 to 5.5V

5.0V

8.0A

90%

EXA40-24S05

36-75VDC

1.5 to 2.0V

1.8V

8.0A

84%

EXA40-48S1V8

36-75VDC

2.5 to 3.0V

2.75V

8.0A

86%

EXA40-48S2V75

36-75VDC

3.0 to 3.6V

3.3V

8.0A

88%

EXA40-48S3V3

36-75VDC

4.5 to 5.5V

5.0V

8.0A

91%

EXA40-48S05

Figure 1: Natural Convection (0.1m/s) Typical derating, See Application Note.

100%

75%

50%

25%

0%

0

°C 10°C 20°C 30°C 40°C 50°C 60°C 70°C 80°C 90°C 100°C

DERATING CURVE

Output Power (%)

AMBIENT TEMPERATURE (

°C)

27.5%

-40

°C -30°C-20°C -10°C

EXA40-24S05

All other Models

INPUT SPECIFICATIONS

MINIMUM

TYPICAL

MAXIMUM

Remote ON/OFF

Active low, control to -Vin,

open collector input

ON

Open circuit voltage

4.5V

5.5V

OFF

1.0V

2.5V

Remote ON/OFF source current

-70µA

-100µA

CAUTION: Hazardous internal voltages and high temperatures.

Ensure that unit is not user accessible.

EMC CHARACTERISTICS (Continued)

ETS 300 386-1 table 5

Conducted emissions

EN55022, internal filter

Level A

(See Design Note 101)

and 4.7µF film cap

EN55022, external filter,

Level B

Radiated emissions

EN55022 (See Design Note)

Level B

ESD air

EN61000-4-2, level 3

ESD contact

EN61000-4-2, level 4

Surge (500V)

EN61000-4-5, level 3,4

Fast transients

EN61000-4-4, level 3,4

Radiated immunity

EN61000-4-3, level 3

Conducted immunity

EN61000-4-6, level 3

GENERAL SPECIFICATIONS

Efficiency

See table

Basic insulation

Input/output

1500VDC

Input fuse 24V

(See Note 8)

3.5A slow blow

Input fuse 48V

2.0A slow blow

Switching frequency

Fixed

300kHz

Approvals and

(See Notes 1, 7, 8, 9)

EN60950

standards

Bi-national UL1950

(See Notes 1, 7, 8, 9)

CSA C22.2 No. 234/950

Weight

25g (0.88 oz)

MTBF, See Design Note

MIL-HDBK-217

250,000 hours

ENVIRONMENTAL SPECIFICATIONS

Thermal performance

Operating ambient

-40°C to +70°C,

temperature

See curves

Non-operating

-55°C to +105°C

Over temperature

Loss of Function

75°C to +85°C

shutdown

Self-Recovery (LFS)

ETS 300 019-2-3

Classes T3.1 to T3.5

Air temperature

Low: IEC 68-2-1

-40°C

High: IEC 68-2-2

+70°C

Change: IEC 68-2-1

-40°C to +70°C

Relative humidity

IEC 68-2-56

10% to 100% RH

IEC 68-2-30

Condensation

Vibration, Class 3M5

IEC68-2-6

2 to 9 Hz, 3mm disp.

9 to 200Hz 1g

MIL-STD-202F

Method 204 cond. A

Shock, Class 3M5

IEC-68-2-29

MIL-STD-202F

Method 213B cond. A