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
40 Watt
High efficiency DC/DC converters
DC/DC CONVERTERS |
40W DC/DC
PAGE 2
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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°C. See Application Note for details.
Figure 1: Natural Convection (0.1m/s) Typical derating, See Application Note.
100%
75%
50%
25%
0% 0°C10°C20°C30°C40°C50°C60°C70°C80°C90°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.
ELECTROMAGNETIC COMPATIBILITY SPECIFICATIONS
ETS 300 386-1 table 5
Conducted emissions EN55022, internal filter Level A
(See Design Note 101) and 4.7uF 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