www.martekpower.com
2500 HN series
Single Output
DC/DC Converter
F
EATURES
•
•
•
•
•
Up to 87% Efficiency
Single Output, 25 watt converter
Available in 12, 24 and 48 VDC Inputs
Industry Standard 2” X 1.6” X 0.4” Package
Output Over Voltage, Input Over Voltage & Short Circuit Protection
I
NPUT
C
HARACTERISTICS
Min Typ Max Units/Comments
Input Voltage
12 VDC Input Models
9
12 18
24 VDC Input Models
18 24 36
48 VDC Input Models
36 48 75
Under Voltage Shutdown
12 VDC Input Models
8
24 VDC Input Models
17
48 VDC Input Models
33
Over Voltage Shutdown
12 VDC Input Models
20
24 VDC Input Models
40
48 VDC Input Models
80
Full Load Input Current
12 VDC Input Models
2.1
24 VDC Input Models
1.26
48 VDC Input Models
0.62
Input Fuse Requirements
12 VDC Input Models
7
24 VDC Input Models
4
48 VDC Input Models
2
Efficiency by Model
2503S12HN
78
2505S12HN
80
2512S12HN
82
2515S12HN
84
2503S24HN
79
2505S24HN
83
2512S24HN
86
2515S24HN
87
2503S48HN
80
2505S48HN
84
2512S48HN
86
2515S48HN
87
Switching Frequency
360 400 440
Remote Shut Down Off 0
0.80
On 3.5
Input - Output Capacitance
Input Filter
Isolation Voltage
12 VDC & 24 VDC Input Models
Input to Output
750
Input to Baseplate
750
Output to Baseplate
750
48 VDC Input Models
Input to Output
1100
Input to Baseplate
1100
Output to Baseplate
750
Isolation Resistance
100
D
ESCRIPTIONS
The 2500HN, single output power modules are 16 to 25 watt
DC/DC converters available in a single output configuration
providing 3.3 VDC to 15 VDC outputs in a compact, industry
standard 2.0" X 1.6" X 0.4" package. These 400kHz, switching
converters are available in 12, 24 and 48 VDC inputs making
them one of the most versatile product lines in the market
with efficiencies up to 87%. Advanced surface mount
construction allows these converters to achieve outstand-
ing thermal performance eliminating the need for thermal
potting compounds and thereby enhancing manufacturing
efficiency to reduce costs.
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
A
A
A
Amps; Slow blow type
Amps; Slow blow type
Amps; Slow blow type
O
UTPUT
C
HARACTERISTICS
Min Typ Max Unit/Comments
±1
Output Voltage Set Point
% Output voltage at
nominal line & FL
-2
+2 % Output voltage
Total Band Error
including line/load
regulation setting
±0.5
Line Regulation
% Output voltage
measured from
min. input line to
maximum
±0.5
Load Regulation
% Output voltage
measured from FL
to 10% load
±0.01
Temperature Coefficient
% per degree C
60 100 mV p-p measured
Ripple/Noise
at 20 MHz bandwidth
with ext. 1
μf
cap.
Output Voltage and Current
Refer to model
selection chart
±2
Load Transient Response
% Deviation of Vout
voltage for a 25%
load change for
200μS
Short Circuit Protection
Indefinite, Automatic
Recovery
±10
Output Voltage Trim Range
% Output voltage.
Place ext. resistor
between pins 8 - 6 to
trim down. Between
pins 8 - 7 to trim up.
125
Overvoltage Protection
%; Clamp type (5VDC
output set at 6.8VDC)
%; FL Nominal Line
%; FL Nominal Line
%; FL Nominal Line
%; FL Nominal Line
%; FL Nominal Line
%; FL Nominal Line
%; FL Nominal Line
%; FL Nominal Line
%; FL Nominal Line
%; FL Nominal Line
%; FL Nominal Line
%; FL Nominal Line
kHz; Factory set
VDC;Referenced to
input ( - )
VDC or open;Referenced
to input ( - )
pF
1000
LC type
VDC
VDC
VDC
VDC
VDC
VDC
MOHms
Martek Power reserves the right to change specifications without notice.
>> B-177
1111 Knox Street
Torrance
CA 90502
USA
Tel: +1 310 202 8820
sales@martekpower.com
www.martekpower.com
M
ODEL
S
ELECTION
C
HART
Input Voltage
Output
(VDC)
Voltage (VDC)
2503S12HN
2505S12HN
2512S12HN
2515S12HN
2503S24HN
2505S24HN
2512S24HN
2515S24HN
2503S48HN
2505S48HN
2512S48HN
2515S48HN
12
12
12
12
24
24
24
24
48
48
48
48
3.3
5.0
12.0
15.0
3.3
5.0
12.0
15.0
3.3
5.0
12.0
15.0
Full Load
Output
Current (A)
5.0
4.0
1.7
1.33
6.0
5.0
2.0
1.66
6.0
5.0
2.0
1.66
G
ENERAL
C
HARACTERISTICS
Operating Temp. Range
Storage Temp. Range
Min
-40
-55
Typ
Unit/Comments
°C; measured
at baseplate
+125 °C; measured
at baseplate
UL94V-0
10,000 Feet
40,000 Feet
95
% Humidity,
non-condensing
22
Grams
2 ” X 1.6” X 0.4”
Black coated
aluminum
UL/CUL1950
Max
+110
Material Flammability
Altitude: Operating
Non-Operating
5
Relative Humidity
Weight
Size
Case Material
Agency Approvals
O
UTLINE
D
RAWING
HEATSINK OPTIONAL
0.40
(10.16)
VENT SLOTS ARE TYP. FOR
TWO LONG SIDES ONLY
0.020 TYP.
(0.51)
SIDE VIEW
0.125
(3.18)
1.800 TYP.
(45.72)
0.10 TYP.
(2.54)
0.70
(17.78)
5
6
.040 ±.002 (1.02 ± 0.05)
DIA. PIN TYP.
0.100
(2.54)
0.500
(12.70)
1.60
(40.64)
0.600
(15.24)
0.200
(5.08)
1
2
4
7
8
2.00
(50.8)
0.300
(7.62)
0.700
(17.78)
BOTTOM VIEW
P
IN
O
UT
C
HART
Pins
1
2
4
5
6
7
8
FUNCTION
+ INPUT
- INPUT
CONTROL
NO PIN
+ OUTPUT
- OUTPUT
TRIM
Notes:
1. Unless otherwise specified dimensions are in inches (mm).
2. Controlling dimension in inch.
3. Tolerances
Inches
mm
X.XX = ±0.02
X.X = ±0.5
X.XXX= ±0.010
X.XX = ±0.25
All specifications are typical at nominal input, nominal load and 25
°
C unless otherwise specified.
External, low ESR, 33 microfarad (minimum) capacitor across output is recommended for operation.
>> B-178
1111 Knox Street
Torrance
CA 90502
USA
Tel: +1 310 202 8820
sales@martekpower.com
www.martekpower.com
H
OW
T
O
O
RDER
H
OW TO
O
RDER
25 XX S XX HN - Y
Wattage
Output Voltage
Single Output
ROHS Compliant
Hi-Density, Non-Encap
Input Voltage
H Options: To add external heatsink mounted on the baseplate of the converter please
add a “- H” at the end of the part number. Heatsink is provided to improve thermal
performance (see derating curves).
D
ERATING
C
URVES
MODEL 2500HN Single 3.3V & 5V (Without heatsink)
Pout %
100
90
80
70
60
50
40
30
20
10
0
-40 -30 -20 -10
500LFM
200LFM
100LFM
Natural
Convection
MODEL 2500HN Single 3.3V & 5V (With heatsink)
Pout %
100
90
80
70
60
50
40
30
20
10
0
-40 -30 -20 -10
500LFM
200LFM
100LFM
Natural
Convection
0
10
20
30
40
50
60 70
80
90 100 110
0
10
20
30
40
50
60 70
80
90 100 110
TEMPERATURE
°
C
TEMPERATURE
°
C
MODEL 2500HN Single 12V & 15V (Without heatsink)
Pout %
100
90
80
70
60
50
40
30
20
10
0
-40 -30 -20 -10
500LFM
200LFM
100LFM
Natural
Convection
MODEL 2500HN Single 12V & 15V (With heatsink)
Pout %
100
90
80
70
60
50
40
30
20
10
0
-40 -30 -20 -10
500LFM
200LFM
100LFM
Natural
Convection
0
10
20 30
40
50 60 70
80
90 100 110
0
10
20 30
40
50 60 70
80
90 100 110
TEMPERATURE
°
C
TEMPERATURE
°
C
>> B-179
1111 Knox Street
Torrance
CA 90502
USA
Tel: +1 310 202 8820
sales@martekpower.com
www.martekpower.com
O
UTPUT
V
OLTAGE
A
DJUSTMENT
(2500HN S
INGLE
S
ERIES
)
The converter’s output voltage may be trimmed by up to
±5%
of the nominal output voltage.
TRIM UP
Trim output voltage up by connecting an external resistor between Pins 7and 8. Use the following equation,
reference Table 1 for variables A and B.
Radj-up =
A
Δ
%
- B (kΩ)
Example:
Trim 5% up for 12V Output units,
where A = 1.58, B = 20,
Δ
% = 0.05
Radj-up =
1.58
0.05
- 20
=
11.6 kΩ
Table 1.
Output Voltage
A
B
3.3V
5V
12V
15V
1.25
1.00
1.58
1.67
4.7
10
20
20
TRIM DOWN
Trim output voltage down by connecting an external resistor between Pins 6 and 8. Use the following
equation, reference Table 2 for variables C and D.
Radj-down =
C
Δ
%
- D (kΩ)
Example:
Trim 5% down for 15V Output units,
where C = 8.33, D = 30,
Δ
% = 0.05
Radj-down =
8.33
0.05
- 30
=
136.6 kΩ
Table 2.
Output Voltage
C
D
3.3V
5V
12V
15V
2.07
1.00
6.09
8.33
8.02
12
27.7
30
>> B-180
1111 Knox Street
Torrance
CA 90502
USA
Tel: +1 310 202 8820
sales@martekpower.com
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