www.martekpower.com
300WFR series
FEATURES
Single & Dual Output
DC/DC Converter
• 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
INPUT CHARACTERISTICS
DESCRIPTIONS
Unit/Comments
Min Typ Max
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.
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
VDC
VDC
VDC
VDC
4.5
9
5
9
12 18
18 24 ±6
±6 48 72
o
o
The -25 C to +71 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.
mA; Slow blow type
mA; Slow blow type
mA;Slow blow type
mA;Slow blow type
A
1500
700
±50
1±5
1
OUTPUT CHARACTERISTICS
Min Typ Max
Unit/Comments
% Output voltage at
nominal line & FL
% Equal Output
Loads
% Output voltage
measured from
min. input line to
maximum
±0.5 ±1.0
Output Voltage Set Point
±0.5 ±2.0
±0.2 ±0.5
Output Voltage Balance
(Duals)
Line Regulation
±0.2 ±0.5
45 60
Load Regulation
Ripple/Noise
% Output voltage
measured from FL
to 10% load
mV p-p, Nom.Line
@FL, 20MHz B.W.,
using 1 μf bypass
capacitor
mV p-p, Over Line,
Load & Temp., 20
MHz B.W.,
GENERAL CHARACTERISTICS
Min Typ Max Unit/Comments
Switching Frequency
Isolation Voltage
Isolation Resistance
Isolation Capacitance
MTBF (MIL-HBK-217F)
±00
kHz
1500
1000
VDC, 1 minute
Mohm, 500VDC
65 100 pF, 100kHz, 1Volt
Million Hours,
100
Ripple/Noise
1
o
+25 C, Ground
Benign
using 1 μf bypass
capacitor
Continuous,
Short Circuit Protection
Automatic Recovery
% deviation of Vout
for a 25% load change
%
μS for 25% load
change
% per degree C
±± ±5
Transient Response Deviation
120
Over Power Protection
Transient Recovery Time
±00 500
±0.01 ±0.02
Temperature Coefficient
>> B-52
1111 Knox Street Torrance CA 90502 USA Tel: +1 310 202 8820 sales@martekpower.com
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