www.martekpower.com
300WFR series
Single & Dual Output
DC/DC Converter
F
EATURES
•
•
•
•
•
•
Up to 84% Efficiency
Single & Dual Output, 2 to 3 watt converter
2 - 1 Input Range
1500 VDC Input / Output Isolation
Short Circuit Protection
MTBF > 1,000,000 Hours
D
ESCRIPTIONS
The 300WFR series 3 watts power modules are high
efficiency, low profile dc-dc converters that operate over a wide
input voltage range of 4.5 - 9 VDC, 9 - 18 VDC, 18 - 36 VDC and 36
- 72 VDC and provide precisely regulated output voltages of
3.3V, 5V, 12V, 15V, ±5V, ±12V and ±15V.
The -25
o
C to +71
o
C operating temperature range makes it
ideal for data communication equipment, mobile battery
driven equipment, distributed power systems, telecommunication
equipment, mixed analog/digital subsystems, process/
machine control equipment, computer peripheral systems
and industrial robot systems.
I
NPUT
C
HARACTERISTICS
Min Typ Max Unit/Comments
Start Voltage
5 VDC Input Models
12 VDC Input Models
24 VDC Input Models
48 VDC Input Models
Input Fuse Requirements
5 VDC Input Models
12 VDC Input Models
24 VDC Input Models
48 VDC Input Models
Reverse Polarity Input Current
4.5
9
18
36
5
12
24
48
1500
700
350
135
1
9
18
36
72
VDC
VDC
VDC
VDC
mA; Slow blow type
mA; Slow blow type
mA; Slow blow type
mA; Slow blow type
A
O
UTPUT
C
HARACTERISTICS
Min Typ Max Unit/Comments
±0.5 ±1.0 % Output voltage at
Output Voltage Set Point
nominal line & FL
±0.5 ±2.0 % Equal Output
Output Voltage Balance
(Duals)
Loads
±0.2 ±0.5 % Output voltage
Line Regulation
measured from
min. input line to
maximum
±0.2 ±0.5 % Output voltage
Load Regulation
measured from FL
to 10% load
45 60 mV p-p, Nom.Line
Ripple/Noise
@FL, 20MHz B.W.,
using 1
μf
bypass
capacitor
100 mV p-p, Over Line,
Ripple/Noise
Load & Temp., 20
MHz B.W.,
using 1
μf
bypass
capacitor
Short Circuit Protection
Continuous,
Automatic Recovery
±3 ±5 % deviation of Vout
Transient Response Deviation
for a 25% load change
120
Over Power Protection
%
300 500
μS
for 25% load
Transient Recovery Time
change
±0.01 ±0.02 % per degree C
Temperature Coefficient
G
ENERAL
C
HARACTERISTICS
Switching Frequency
Isolation Voltage
Isolation Resistance
Isolation Capacitance
MTBF (MIL-HBK-217F)
Min Typ Max Unit/Comments
kHz
300
VDC, 1 minute
1500
Mohm, 500VDC
1000
65 100 pF, 100kHz, 1Volt
Million Hours,
1
+25
o
C, Ground
Benign
>> B-52
1111 Knox Street
Torrance
CA 90502
USA
Tel: +1 310 202 8820
sales@martekpower.com
www.martekpower.com
E
NVIRONMENTAL
S
PECIFICATIONS
Operating Temp. Range
Operating Temp. Range
Storage Temp. Range
Relative Humidity
Cooling
Min
-25
-25
-40
Typ Max
+71
+90
+125
95
Unit/Comments
o
C; Ambient
o
C; Case
o
C
% Humidity; non-
condensing
Free-Air Convection
P
HYSICAL
C
HARACTERISTICS
Case Size
Case Material
Flammability
Weight
Unit/Comments
1.25 X 0.8 X 0.4 inches
(31.8 X 20.3 X 10.2 mm)
Non-conductive Black Plastic
UL94V-0
12 Grams
O
UTLINE
D
RAWING
1.25 (31.8)
SIDE VIEW
0.16 (4.1)
0.020 (0.50)
PIN DIA. TYP.
0.18 (4.5)
0.40
(10.2)
0.100 (2.54)
0.10
(2.5)
2 3
9
11
0.600
(15.22)
0.80
(20.3)
BOTTOM VIEW
23 22
16
14
P
IN
O
UT
C
HART
Pins
2
3
9
11
14
16
22
23
Single
- Vin
- Vin
No Pin
NC
+ Vout
- Vout
+ Vin
+ Vin
Dual
- Vin
- Vin
Common
- Vout
+ Vout
Common
+ Vin
+ Vin
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
Pin :
±0.002
±0.05
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.
NC = No Connection
>> B-53
1111 Knox Street
Torrance
CA 90502
USA
Tel: +1 310 202 8820
sales@martekpower.com
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