1500 series
Single, Dual, Triple Output
DC/DC Converter
F
EATURES
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www.martekpower.com
Synchronization
13.3W/In
3
Power Density
Efficiency to 87%
UL 1950 Approved
VDE / EN 60950 Approved
>700,000 Hours MTBF
6 sided Continuous Shielding
Output Voltage Trimming
D
ESCRIPTIONS
The 1500 series 15 watts high performance DC/DC
converters are cost effective solution to the high reliability
and performance requirements of power distribution
systems in applications ranging from high speed data
communications equipment to industrial robotic systems.
The 1500 series operates over 2:1 input voltage ranges of
9 to 18, 18 to 36 or 36 to 72VDC; providing single, dual and
triple output combinations of 5, 12, 15, ±5, ±12, ±15, 5/±12 and
5/±15 VDC. All models are packaged in compact, low profile
2” X 2” X 0.4” metal cases.
I
NPUT
C
HARACTERISTICS
Min Typ Max Unit/Comments
Input Voltage Range
12 VDC Input Models
9
12
24 VDC Input Models
18 24
48 VDC Input Models
36 48
Remote On / OFF Control
Supply ON
Supply OFF
Logic Referenced to Negative Input
Reverse Polarity Input Current
Input Filter
18
36
72
VDC
VDC
VDC
5.5 VDC or Open Circuit
0 VDC to 0.8 VDC
12
Amp
Internal Capacitor;
External 10-20
μF
cap recommended
across input pins
See Model Selection
Guide
O
UTPUT
C
HARACTERISTICS
Min Typ Max Unit/Comments
Output Voltage Accuracy
Single & Dual Outputs
Triple Outputs - Primary
- Auxiliaries
Output Voltage Adjustment
Voltage Balance:
Dual Outputs
Triple Outputs (Auxiliaries)
Minimum Load
Line Regulation
Single & Dual Outputs
Triple Outputs - Primary
- Auxiliaries
Load Regulation
Single Outputs
Dual Outputs
Triple Outputs - Primary
- Auxiliaries
Ripple/Noise
5V Outputs
12V and 15V Outputs
Short Circuit Protection
Transient Recovery Time
Temperature Coefficient
Over Voltage Protection
±1.0
±1.0
±5.0
±5.0
%
1
%
1
%
1
%
1
Input Fuse Rating
±1.0 %; Equal Output Loads
±1.0 %; Equal Output Loads
10% Full Load
±0.5 %
2
±0.5 %
2
5.0 %
2
±0.3
±1.0
±0.5
±5.0
%
3
%
3
; Equal Loads
%
3
%
3
; Equal Loads
G
ENERAL
C
HARACTERISTICS
Switching Frequency
Isolation Voltage
Isolation Resistance
Isolation Capacitance
MTBF (MIL-HBK-217F)
Min Typ Max Unit/Comments
kHz
100
VDC, 1 minute
1000
Mohm, 500VDC
1000
pF, 100kHz, 1Volt
60
Thousand Hours,
700
+25
o
C, Ground
Benign
75 mV p-p, Nom.Line FL,
20Mhz B.W. using
1
μf
bypass capacitor
1 % of Vout
Continuous, Auto-
matic Recovery
200
μS
to within1% error
band for 50% step
load change
±0.01 % per
o
C
See Model Selection Guide
1
2
3
= Output voltage at nominal line & FL
= % Output voltage measured from min. input line to maximum
= Output voltage measured from FL to 10% Load
Martek Power reserves the right to change specifications without notice.
B-107
E
NVIRONMENTAL
S
PECIFICATIONS
Operating Temp. Range
(Industrial)
Operating Temp. Range
(Extended, “-X” suffix)
Storage Temp. Range
Relative Humidity
Cooling
Min
-40
-55
-55
Typ Max Unit/Comments
+71
o
C; Ambient
+85
o
C; Ambient
+125
o
C
95 % Humidity; non-
condensing
Free-Air Convection
P
HYSICAL
C
HARACTERISTICS
Case Size
Case Material
Shield Connection
12V and 24V Input Models
48V Input Models
Flammability
Weight
Unit/Comments
2.0 X 2.0 X 0.4 inches
(51.0 X 51.0 X 10.2 mm)
Coated Metal with Non-
Conductive Base
Negative Input, Pin 3
Positive Input, Pin 4
UL94V-0
79 Grams
O
UTLINE
D
RAWING
C
ASE
A
2.00 (50.8)
0.40
(10.2)
0.40
(10.2)
0.40
(10.2)
0.40
(10.2)
0.10
(2.5)
0.040±.005
(1.01)
DIA.
P
IN
O
UT
C
HART
; C
ASE
A
Pin
1
2
3
4
5
6
7
8
Single
Dual
Triple
Remote On/Off Remote On/Off Remote On/Off
Sync
Sync
Sync
- Vin
- Vin
- Vin
+ Vin
+ Vin
+ Vin
Trim
Trim
- Vout (Aux)
- Vout
- Vout
Common
+ Vout
Common
+5V Vout
No Pin
+ Vout
+Vout (Aux)
8
7
6
5
BOTTOM
2.00
(50.8)
SIDE
4
3
2
1
0.10
(2.5)
0.15MIN.
(3.8)
0.90
(22.9)
.20 .20 .20
(5.1) (5.1) (5.1)
0.40
(10.2)
C
ASE
A1
2.00 (50.8)
0.40
(10.2)
0.40
(10.2)
0.60
(15.2)
0.040±.005
(1.01)
DIA.
P
IN
O
UT
C
HART
; C
ASE
A1
Pins
1
2
3
4
5
Single
+ Vin
- Vin
+ Vout
Trim
- Vout
Dual
+ Vin
- Vin
+ Vout
Common
- Vout
3
4
5
2.00
0.80
(50.8)
(20.3)
BOTTOM
1
2
SIDE
0.60
(15.2)
0.90
(22.9)
0.15MIN.
(3.8)
0.20
(5.1)
0.40
(10.2)
Notes:
1. Unless otherwise specified dimensions are in inches (mm).
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, 10 microfarad (minimum) capacitor across output is recommended for operation.
B-108
O
UTPUT
V
OLTAGE
A
DJUSTMENT
(1500 S
ERIES
S
INGLE
O
UTPUT
)
The converter’s output voltage may be trimmed to
±10%
of the nominal output voltage.
TRIM UP
Trim output voltage up by connecting an external resistor between Pins 5 and 6. Use the following equation.
Reference Table 1 for variable A.
Radj-up =
Example:
A
Δ
%
- 24 (kΩ)
If we want to trim 5% up for 12V output units,
where A = 1.98,
Δ
% = 0.05
Radj-up =
1.98
0.05
- 24 kΩ
=
15.6 kΩ
CASE A
Table 1.
Output Voltage
A
3.3V
5V
12V
15V
0.78
1.24
1.98
2.07
TRIM DOWN
Trim output voltage down by connecting an external resistor between Pins 5 and 7. Use the following
equation. Reference Table 2 for variable C and D.
Radj-down =
Example:
C
Δ
%
- D (kΩ)
If we want to trim 4% down for 5V output units,
where C = 1.24, D = 26.5,
Δ
% = 0.04
Radj-down =
1.24
0.04
- 26.5 kΩ
=
4.5 kΩ
CASE A
Table 2.
Output Voltage
C
D
3.3V
5V
12V
15V
1.22
1.24
7.57
10.3
26
26.5
33.5
36.4
B-111
RF/Wirelessly
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