www.martekpower.com
2700 HN series
Dual Output
DC/DC Converter
F
EATURES
•
•
•
•
•
Dual, Independent output between 1.8 and 5.0 VDC
Up to 82% Efficiency
Available in 12 and 48 VDC Inputs
Industry Standard 2” X 2” X 0.4” Package
Output Over Voltage, Input Over Voltage and Short Circuit
Protection
D
ESCRIPTIONS
The 2700HN are independent channel, dual output converters offer-
ing dual logic voltage rails (from 2.5 VDC to 5.0 VDC) operating on
separate control loops. In addition V2 can be adjusted from 3.5 VDC
to 1.8VDC allowing these converters to support logic voltages from 1.8
to 5.0 VDC negative or positive polarities. The 2700HN series provide
up to 27 watts total power in industry standard 2" X 2" X 0.4" packages.
These 400kHz, switching converters are available in 12 and 48 VDC
inputs making them one of the most versatile product lines in the
market with efficiencies up to 82%. Advanced surface mount
construction allows these converters to achieve outstanding thermal
performance eliminating the need for thermal potting compounds
and thereby enhancing manufacturing efficiency to reduce costs.
I
NPUT
C
HARACTERISTICS
Min Typ Max Units/Comments
Input Voltage
12 VDC Input Models
48 VDC Input Models
Under Voltage Shut Down
12 VDC Input Models
48 VDC Input Models
Over Voltage Shutdown
12 VDC Input Models
48 VDC Input Models
Minimum Input Current
12 VDC Input Models
48 VDC Input Models
Full Load Input Current
12 VDC Input Models
48 VDC Input Models
Input Fuse Requirements
12 VDC Input Models
48 VDC Input Models
Efficiency by Model
2703/2P12HN
2705/3P12HN
2703/2N12HN
2705/3N12HN
2703/2P48HN
2705/3P48HN
2703/2N48HN
2705/3N48HN
Switching Frequency
Remote Shut Down Off
On
9
36
8
30
20
80
60
40
2.30
0.69
12
48
18
75
VDC
VDC
VDC
VDC
VDC
VDC
mA
mA
A
A
O
UTPUT
C
HARACTERISTICS
Output Voltage Set Point
Total Band Error
Line Regulation
Min Typ Max Unit/Comments
% Output voltage at
±1
nominal line & FL
-2
+2 % Output voltage
including line/load
regulation setting
% Output voltage
±0.5
measured from
min. input line to
maximum
% Output voltage
±0.5
measured from FL
to 10% load
% per degree C
±0.01
50 100 mV p-p measured
at 20 MHz bandwidth
with external 1
μf
capacitor
Refer to model
selection chart
% Deviation of Vout
±2
voltage for a 25% load
load change for 200μS
Indefinite, Automatic
Recovery
1.8
3.5 % Output voltage.
Place ext. resistor
between pins 9 - 6 to
trim down. Between
pins 9 - 5 to trim up
%; Clamp type
3.9
%; Clamp type
5.8
12 Amps; Slow blow type
2 Amps; Slow blow type
77
79
77
79
78
82
78
82
360 400 440
0
0.80
3.5
%; 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
LC type
VDC
VDC
VDC
VDC
VDC
VDC
MOHms
Load Regulation
Temperature Coefficient
Ripple/Noise
Output Voltage and Current
Load Transient Response
Short Circuit Protection
Output Voltage Trim Range
Input - Output Capacitance
1200
Input Filter
Isolation Voltage
12 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
Martek Power reserves the right to change specifications without notice.
OV Protection
3.3 VDC
5.0 VDC
>> B-196
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 Output Output Output Output Max
Voltage Voltage Current Voltage Current Power
(VDC) V1(VDC) V1(A) V2(VDC) V2(A) (Watts)
3.3
2.5
2.5
4.0
18.3
2703/2P12HN 12
5.0
2.5
3.3
4.0
21.5
2705/3P12HN 12
3.3
2.5
-2.5
4.0
18.3
2703/2N12HN 12
12
5.0
2.5
-3.3
4.0
21.5
2705/3N12HN
3.3
3.0
2.5
5.0
22.5
2703/2P48HN 48
5.0
3.0
3.3
5.0
27.0
2705/3P48HN 48
3.3
3.0
-2.5
5.0
22.5
2703/2N48HN 48
5.0
3.0
-3.3
5.0
27.0
2705/3N48HN 48
G
ENERAL
C
HARACTERISTICS
Min
Operating Temp. Range
Storage Temp. Range
-40
Typ
Max Unit/Comments
See derating curves
+85 °C; measured
at baseplate
UL94V-0
10,000 Feet
40,000 Feet
95 % Humidity,
non-condensing
Grams RMS
Hr;Calculated per
MIL-HDBK-217F,
Grd Benign envir.
32 Grams
2” X 2” X 0.4”
Black coated
aluminum
UL/CUL1950
Material Flammability
Altitude: Operating
Non-Operating
Relative Humidity
5
Vibration
MTBF
Weight
Size
Case Material
1.0
>800K
O
UTLINE
D
RAWING
Agency Approvals
SLOTS ARE TYPICAL FOR
THIS SIDE AND FAR SIDE ONLY
0.040 ±.002
(1.02 ±0.05) PIN. DIA.
(TYP. 7 PLACES)
OPTIONAL HEATSINK
2.00 SQUARE
(50.8)
0.10 TYP
(2.5)
1.800 TYP.
(45.72)
8
4
3
0.50
(12.7)
0.400
(10.16)
1
7
6
5
0.100
(2.54)
0.300
(7.62)
0.700
(17.78)
1.10
(27.9)
0.40
(10.2)
0.125 TYP.
(3.18 )
SIDE VIEW
0.600
(15.24)
BOTTOM
VIEW
0.020 TYP.
(0.51)
0.64
(16.26)
P
IN
O
UT
C
HART
PINS
1
3
4
5
6
7
8
FUNCTION
*REMOTE ON/OFF
- INPUT
+ INPUT
V2 TRIM
V2
COMMON
+V1
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.
Minimum 10% load on all models. Turn on of 9.6 VDC is acceptable for 12 VDC models.
>> B-197
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
27 XX / 3 X XX HN - Y
Wattage
Output VoltageV1
Output VoltageV2
Output Configuration (P= Positive)
(N = Negative)
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 2705SXX (Without heatsink)
Pout %
100
90
80
70
60
50
40
30
20
10
0
-40 -30 -20 -10
500LFM
200LFM
100LFM
Natural
Convection
MODEL 2705SXX (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
MODEL 2703SXX (Without heatsink)
Pout %
100
90
80
70
60
50
40
30
20
10
0
-40 -30 -20 -10
500LFM
200LFM
100LFM
Natural
Convection
TEMPERATURE
°
C
MODEL 2703SXX (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-198
1111 Knox Street
Torrance
CA 90502
USA
Tel: +1 310 202 8820
sales@martekpower.com
www.martekpower.com
O
UTPUT
V
OLTAGE
A
DJUSTMENT
(2700HN S
ERIES
)
O
UTPUT
V
OLTAGE
+V2
T
RIM
C
ONFIGURATION
8
7
6
HI
1k TRIMPOT
4
3
1
LOW
5
Connect 1k ohm TRIMPOT as shown to adjust O/P2
over full range +1.8V to +3.5V
O
UTPUT
V
OLTAGE
-V2
T
RIM
C
ONFIGURATION
8
7
6
HI
1k TRIMPOT
4
3
1
LOW
5
Connect 1k ohm TRIMPOT as shown to adjust O/P2
over full range -1.8V to -3.5V
>> B-199
1111 Knox Street
Torrance
CA 90502
USA
Tel: +1 310 202 8820
sales@martekpower.com
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