500 series
Single & Dual Output
DC/DC Converter
F
EATURES
•
•
•
•
•
•
www.martekpower.com
Low Output Noise/Ripple
-40
o
C to +75
o
C Operating Temperature Range
±0.03% Line/Load Regulation
Full Input/Output Protection
UL1950, CSA 22.2-950, VDE/EN 60950 Approved
>1,000,000 Hours MTBF
D
ESCRIPTIONS
The 500 series is a family of compact, high performance, low
noise 5W DC/DC converters. High performance features
include 1000 VDC input/output isolation, continuous short
circuit protection with automatic restart and a maximum
line/load regulation of only ± 0.03%. Thirty-six models operate
from power busses of 5, 12, 18, 24, 28 or 48 VDC and provide
single or dual output of 5, 12, 15, ±5, ±12 or ±15 VDC. Standard
features include an internal Pi filter to reduce reflected
ripple current, efficiency as high as 82% and low noise
operation (20 mV Pk-Pk).
I
NPUT
C
HARACTERISTICS
Min Typ Max Unit/Comments
Input Voltage
5 VDC Input Models
12 VDC Input Models
18 VDC Input Models
24 VDC Input Models
28 VDC Input Models
48 VDC Input Models
Input Fuse Requirements
5 VDC Input Models
12 VDC Input Models
18 VDC Input Models
24 VDC Input Models
28 VDC Input Models
48 VDC Input Models
Reverse Polarity Input
Current
Input Filter
4.65
10.9
16.4
21.6
25.2
43.2
5
12
18
24
28
48
2000
1000
750
500
350
200
5
5.25
13.2
19.8
26.4
30.8
52.8
VDC
VDC
VDC
VDC
VDC
VDC
mA; Slow blow type
mA; Slow blow type
mA; Slow blow type
mA; Slow blow type
mA; Slow blow type
mA; Slow blow type
Amp
Pi Filter
O
UTPUT
C
HARACTERISTICS
Output Voltage Set Point
Output Voltage Balance
Line Regulation
Min Typ Max Unit/Comments
±0.5 ±1.0 % Output voltage at
nominal line & FL
±50 mV; Equal Output
Loads
±0.01 ±0.03 % Output voltage
measured from
min. input line to
maximum
±0.01 ±0.03 % Output voltage
measured from FL
to 10% load
20 mV p-p, Nom.Line
@FL, 20MHz B.W.,
using 1
μf
bypass
capacitor
Limited,
Automatic Recovery
±5 % deviation of Vout
for a 25% load change
50
μS
for 25% load
change, to within 1%
±0.02 % per
o
C
G
ENERAL
C
HARACTERISTICS
Switching Frequency
Isolation Voltage
Isolation Resistance
Isolation Capacitance
MTBF (MIL-HBK-217F)
Min Typ Max Unit/Comments
kHz
150
VDC, 1 minute
1000
Mohm, 500VDC
1000
pF, 100kHz, 1Volt
70
Million Hours,
1
+25
o
C, Ground
Benign
Load Regulation
Ripple/Noise
Short Circuit Protection
Transient Response
Deviation
Transient Recovery Time
Temperature Coefficient
Martek Power reserves the right to change specifications without notice.
B-45
E
NVIRONMENTAL
S
PECIFICATIONS
Operating Temp. Range
Storage Temp. Range
Relative Humidity
Cooling
Min
-40
-50
Typ Max
+75
+125
+95
Unit/Comments
o
C; Ambient
o
C
% Humidity; non-
condensing
Free-Air Convection
P
HYSICAL
C
HARACTERISTICS
Case Size
Case Material
Shield Connection
Single Output
Dual Output
Flammability
Weight
Unit/Comments
1.0 X 2.0 X 0.40 inches
(25.5 X 51.0 X 10.2 mm)
Painted Metal with Non-
Conductive Base
Negative Output Pin
Common Output Pin
UL94V-0
39.25 Grams
O
UTLINE
D
RAWING
C
ASE
“D”
0.40
(10.2)
0.40
(10.2)
0.10
(2.54)
0.60
(15.24)
C
ASE
“ D1” (O
PTIONAL
)
0.20
(5.08)
0.04 DIA.
(1.0)
3
4
5
0.04 DIA.
(1.0)
- Vout
+Vout
3
+ Vout Common - Vout
or NC
5
1.20
(30.48)
BOTTOM
1
2
0.80
(20.3)
2.00
SIDE
(50.8)
BOTTOM
1
2
SIDE
(50.8)
2.00
+Vin -Vin
0.60
(15.2)
0.40
(10.2)
0.30 TYP.
(7.6)
0.40
(10.2)
0.20
(5.1)
- Vin +Vin
0.50
(12.70)
0.40
(10.2)
0.30 TYP.
(7.6)
0.40
(10.2)
0.20
(5.1)
1.00
(25.4)
1.00
(25.4)
P
IN
O
UT
C
HART
- C
ASE
“D“
Pins
Single
1
+ Vin
2
- Vin
3
+ Vout
4
NC
5
- Vout
NC = No Connection
Dual
+ Vin
- Vin
+ Vout
Common
- Vout
P
IN
O
UT
C
HART
- C
ASE
“ D1 “ (O
PTIONAL
)
Pins
1
2
3
5
Single
- Vin
+ Vin
- Vout
+ Vout
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
2. Case D pinning is standard. Case D model numbers do not require suffixing.
3. Case D1 pinning is optional. Case D1 model numbers must be suffixed with “D1”. Example: 505S48-D1
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-46
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