DC/DC CONVERTERS 40W High Efficiency DC/DC Converters 1
2 YEAR WARRANTY
EXA40 Series
Single output
•High efficiency topology, 91% typical at 5V
•Approved to EN60950, UL1950, CSA C22.2 No. 234/950
•Operating ambient temperature of -40°C to +70°C
(natural convection)
•Complies with ETS 300 019-1-3/2-3
•Complies with ETS 300 132-2 input voltage and current
requirements
•Fully compliant with ETS 300 386-1
The EXA40 Series, comprising 8 different models is targeted specifically at the
telecommunications, industrial electronics, mobile Telecommunications and distributed
power markets. The series offers two wide input voltage ranges of 18-36VDC and
36-75VDC. Typical efficiencies are 91% for the 5V output, 88% for the 3.3V, 86%
for the 2.75V and 84% for the 1.8V. The series has been designed primarily for
Telecommunications applications and complies with ETS 300 386-1 immunity and
emission standards for high priority of service class. In addition the series complies
with ETS 300 019-1-3 environmental standards (all classes) including shock, vibration,
humidity and thermal performance. A high level of reliability has been designed into all
models through the extensive use of conservative derating criteria. Remote enable and
overtemperature shutdown are included as standard while true latching OVP is
available as an option.
All specifications are typical at nominal input, full load at 25°C unless otherwise stated SPECIFICATIONS
File Name: LF_EXA40.PDF Rev: 15 Jan 2002
OUTPUT SPECIFICATIONS MINIMUM TYPICAL MAXIMUM
Voltage adjustability 2V75, 3V3, 5V outputs ±10% ±11% ±12%
1V8 output +12/-17% +13/-18% +14/-19%
Line regulation Low line to high line +0.05% +0.4%
Load regulation Full load to no load +0.20% +0.4%
Output current range 0A 8A
Ripple and noise 20MHz bandwidth 50mV pk-pk 100mV pk-pk
20MHz bandwidth 10mV rms 20mV rms
Temperature coefficient See Figure 4 ±0.01%/°C ±0.02%/°C
OVP transient (See Note 6) 5V output 6.8V TVS
3V3/2V75 outputs 4.1V TVS
1V8 output 4.1V TVS
OVP latching (See Notes 1, 3) 5V output 6.0V 6.2V 6.4V
(optional) 3V3 output 4.0V 4.2V 4.4V
2V75 output 3.4V 3.6V 3.8V
1V8 output 2.4V 2.5V 2.6V
Short circuit protection (Note 5) Continuous
Short circuit current (Note 5) Rshort <20mΩ10A rms 12A rms
Transient response
Peak deviation 50% to 75% and back 100mV 150mV
Settling time to 1.0%, no external cap 250µs 400µs
Current limit Low line to high line 100% 140% 180%
Voltage accuracy ±1.0% ±1.5%
INPUT SPECIFICATIONS MINIMUM TYPICAL MAXIMUM
Input voltage range 24Vin nominal 18VDC 24VDC 36VDC
48Vin nominal 36VDC 48VDC 75VDC
Input current No load 50mA 100mA
Remote OFF, UVLO 2.5mA 4mA
Inrush current ETS 300 132-2
UVLO turn ON voltage (Note 4) All inputs 88% 94% 100%
UVLO turn OFF voltage (Note 4) All inputs 77% 86% 94%
Start-up time Nominal line 50ms 100ms
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
Notes
1True 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.
2Guaranteed minimum output voltage range.
3Latching OVP response time is 1ms (typical). OVP latch is reset by toggling
remote ON/OFF or by recycling the input voltage.
4Figures are percentage of minimum input voltage.
5Rshort ≤20mΩ.
6TVS spec : 6V8 @ 10mA, 10V5 @ 57A
4V1 @ 1mA, 7V3 @ 50A
7Maximum 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.
8User must provide recommended fuses in order to comply with safety
approvals.
9Maximum temperature on components Q100, Q102 and Q103 not to
exceed 120°C. See Application Note for details.
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 VOLTAGE(2) OUTPUT VOLTAGE CURRENT (MAX.) EFFICIENCY NUMBER(1)
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 (%)
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
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
EXA40 Series
Single output
DC/DC CONVERTERS 40W High Efficiency DC/DC Converters 3
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
PIN CONNECTIONS
PIN NUMBER SINGLE OUTPUT
1 + Input
2 – Input
4 Remote ON/OFF
6 + Output
7 - Output
8 Trim
2.20
(55.88)
1.80
(45.72)
0.20
(5.08)
6
7
8
1
2
4
0.20
(5.08)
2.20
(55.88)
0.20
(5.08)
0.40 (10.16)
0.40 (10.16)
0.40 (10.16)
0.50 (12.70)
0.60 (15.24)
0.35
(8.89)
1.800
(45.72)
2.200
±0.02
(55.88
±0.5
)
1.200
(30.48)
0.600
(15.24)
1.000
(25.40)0.200
(5.08)
2.042
(51.88)
2.200
±0.02
(55.88
±0.5
)
2.003
(50.88)
0.700
(17.78)
0.300
(7.62)
0.100
(2.54)
0.398
±0.012
(10.10
±0.3
)
0.020
(0.50)
ø0.040 ±0.002
(ø1.02) ±0.05
0.142
(3.60)
0.200
(5.08)
1
2
4
6
7
8
unless otherwise specified
10K
TRIMPOT
TRIM
UP
TRIM
DOWN
6
8
7
6
8
7
RTU
RTD
810K
EXTERNAL OUTPUT TRIMMING
Single output models can be externally trimmed
by ±10% using either method shown below.
For the most current data and application support visit www.artesyn.com/powergroup/products.htm
EXA40 Series
Single output
DC/DC CONVERTERS 40W High Efficiency DC/DC Converters 4
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.
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
