MFL283R3S_16 Datasheet, PDF (1/14 Pages) Interpoint Corporation Company – MFL Single and Dual DC-DC Converters 28 Volt Input - 65 Watt

Crane Aerospace & Electronics Power Solutions
MFL Single and Dual DC-DC Converters
28 Volt Input - 65 Watt
Features
• Parallel up to 3 converters—maximum
recommended power is 70% of the total
available power.
• Operating temperature -55°C to +125°C
• Qualified to MIL-PRF-38534 Class H
• Input voltage range 16 to 40 volts
• Transient protection up to 80 volts for 50 ms
-- Converter will shut down at an input voltage
above approximately 45 volts
• Fully isolated, magnetic feedback
• Fixed high switching frequency
• Remote sense and output trim on single
output models
• Primary and secondary inhibit function
• Synchronization input and output
• Indefinite short circuit protection
• High power density with up to 85% efficiency
Models
Output Voltage (V)
SINGLE DUAL
3.3
±5
5
±12
12
±15
15
28
description
The Interpoint^® MFL Series™ 28 volt dc-dc converters are rated
up to 65 watts output power over a -55°C to +125°C t­emperature
range with a 28 V nominal input. On dual output models, up to
70% of the rated output power can be drawn from either the
positive or negative outputs. The welded, hermetically sealed
package is 3.005 x 1.505 x 0.400 inches.
  
Screening
MFL converters are offered with standard screening, “ES” or fully
compliant to MIL-PRF-38534 Class H screening. See Table 9 on
page 13 and Table 10 on page 14 for more information.
Design Features
The MFL Series converters are switching regulators that use a
quasi-square wave, single ended forward converter design with a
constant switching frequency of 600 kHz.
Isolation between input and output circuits is provided with a
transformer in the forward path and wide bandwidth magnetic
coupling in the feedback control loop. The MFL Series uses a
unique dual loop feedback technique that controls output current
with an inner feedback loop and output voltage with a cascaded
voltage mode feedback loop.
The additional secondary current mode feedback loop improves
transient response in a manner similar to primary current mode
control and allows for ease of paralleling.
Tight load regulation is achieved through a wide-bandwidth
magnetic feedback circuit.
Inhibit
The MFL Series converters have two inhibit terminals (INH1 and
INH2) that can be used to disable power conversion, resulting in
a very low quiescent input current. See Table 5 on page 6 for
specifications.
Sync
Converters may be synced to an external clock (525 to 675 kHz)
or to one another by using the sync in or out pins. See Table 5
on page 6 for specifications.
Crane Aerospace & Electronics
Power Solutions – Interpoint Products
10301 Willows Road NE, Redmond, WA 98052
+1.425.882.3100 • [e-mail]
www.craneae.com/interpoint
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MFL Rev AD - 2016.02.19