www.martekpower.com
2500 HN series
Dual Output
DC/DC Converter
F
EATURES
•
•
•
•
•
Up to 87% Efficiency
Dual Output, Up To 25 watt converter
Available in 12, 24 and 48 VDC Inputs
Industry Standard 2.0” X 1.6” X 0.4” Package
Output Over Voltage, Input Over Voltage and Short Circuit
Protection
I
NPUT
C
HARACTERISTICS
D
ESCRIPTIONS
Min Typ Max Units/Comments
The 2500HN, dual output power modules are 20 to 25 watt
DC/DC converters available in a dual output configuration
providing both digital and analog 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 outstanding thermal performance eliminating the
need for thermal potting compounds and thereby enhanc-
ing manufacturing efficiency to reduce costs.
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
2.10
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
2505D12HN
80
2512D12HN
82
2515D12HN
84
2505D24HN
83
2512D24HN
86
2515D24HN
87
2505D48HN
84
2512D48HN
86
2515D48HN
87
Switching Frequency
360 400 440
Remote Shut Down Off
0
0.80
On
3.5
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
Output Voltage Set Point
% Output voltage at
±1
nominal line & FL
Total Band Error
-3
+3 % Output voltage
including line/load
regulation setting
Line Regulation
% Output voltage
±0.5
measured from
min. input line to
maximum
Load Regulation
% Output voltage
±1
measured from FL
to 10% load
Temperature Coefficient
% per degree C
±0.01
Ripple/Noise
60 100 mV p-p measured
at 20 MHz bandwidth
with external 1
μf
capacitor
Output Voltage and Current
Refer to model
selection chart
Load Transient Response
% deviation of Vout
±2
voltage for a 25%
load change for
200μS
Short Circuit Protection
Indefinite, Automatic
Recovery
Output Voltage Trim Range
% Output voltage
±10
Overvoltage Protection
%; Clamp type
135
Martek Power reserves the right to change specifications without notice.
Input - Output Capacitance
Input Filter
Isolation Voltage
12 VDC & 24VDCInput 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
%; 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
>> B-181
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)
2505D12HN
2512D12HN
2515D12HN
2505D24HN
2512D24HN
2515D24HN
2505D48HN
2512D48HN
2515D48HN
12
12
12
24
24
24
48
48
48
±5
±12
±15
±5
±12
±15
±5
±12
±15
Full Load
Output
Current (A)
±2.00
±0.85
±0.67
±2.50
±1.00
±0.83
±2.50
±1.00
±0.83
G
ENERAL
C
HARACTERISTICS
Operating Temp. Range
Storage Temp. Range
Min
-40
-55
Typ
Max Unit/Comments
+110 °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
Material Flammability
Altitude: Operating
Non-Operating
Relative Humidity
5
Weight
Size
Case Material
Agency Approvals
O
UTLINE
D
RAWING
0.40
(10.16)
OPTIONAL HEATSINK
0.020 TYP.
(0.51)
0.125 ±0.010
(3.18 ±0.25)
SIDE VIEW
1.800 TYP.
(45.72)
0.10 TYP
(2.54)
5
1
2
4
6
7
8
2.00
(50.8)
VENT SLOTS ARE TYP. FOR
TWO LONG SIDES ONLY
0.040 ±.002 PIN DIA. TYP.
(1.02 ±0.05)
0.100
(2.54)
0.500
(12.70)
0.600
(15.24)
0.70
(17.78)
0.70
(17.78)
1.60
(40.64)
0.200
(5.08)
BOTTOM VIEW
0.300
(7.62)
P
IN
O
UT
C
HART
Pins
1
2
4
5
6
7
8
FUNCTION
+ INPUT
- INPUT
CONTROL
+ OUTPUT
COMMON
- 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-182
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 D XX HN - Y
Wattage
Output Voltage
Dual 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).
MODEL 2500HN Dual 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 Dual 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 Dual 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-183
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 D
UAL
S
ERIES
)
The converter’s output voltage may be trimmed by up to
±10%
of the nominal output voltage.
TRIM UP
Trim output voltage up by connecting an external resistor between Pins 7 and 8. Use the following equation,
reference Table 1 for variable A.
Radj-up =
A
Δ
%
- 16 (kΩ)
1 +V1 INPUT
+ V1 OUT 5
COM 6
- V2 OUT 7
Example:
Trim 5% up for 12V Output units,
where A = 1.79,
Δ
% = 0.05
2 -V1 INPUT
R
ADJ
-
UP
4 CONTROL
TRIM 8
Radj-up =
1.79
0.05
- 16
=
19.8 kΩ
Both outputs trimmed up by 5%.
Table 1.
Output Voltage
A
± 5V
± 12V
± 15V
1.5
1.79
1.83
TRIM DOWN
Trim output voltage down by connecting an external resistor between Pins 5 and 8. Use the following
equation, reference Table 2 for variables C and D.
Radj-down =
C
Δ
%
- D (kΩ)
+ V1 OUT 5
COM 6
Example:
Trim 5% down for 5V Output units,
where C = 4.5, D = 22,
Δ
% = 0.05
1 +V1 INPUT
2 -V1 INPUT
- V2 OUT 7
R
ADJ
-
DOWN
4 CONTROL
TRIM 8
Radj-down =
4.5
0.05
- 22
=
68 kΩ
Both outputs trimmed down by 5%.
Table 2.
Output Voltage
C
D
± 5V
± 12V
± 15V
4.5
15.4
20.2
22
33.2
38
>> B-184
1111 Knox Street
Torrance
CA 90502
USA
Tel: +1 310 202 8820
sales@martekpower.com
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