AFL12003R3S Datasheet, PDF (1/10 Pages) International Rectifier – HYBRID-HIGH RELIABILITY DC/DC CONVERTER

HYBRID-HIGH RELIABILITY
DC/DC CONVERTER
PD - 94448E
AFL12003R3S
120V Input, 3.3V Output
Description
The AFL Series of DC/DC converters feature high power
density with no derating over the full military temperature
range. This series is offered as part of a complete family of
converters providing single and dual output voltages and
operating from nominal +28V or +270V inputs with output
power ranging from 66W to 120W. For applications requiring
higher output power, multiple converters can be operated in
parallel. The internal current sharing circuits assure equal
current distribution among the paralleled converters. This
series incorporates International Rectifier’s proprietary
magnetic pulse feedback technology providing optimum
dynamic line and load regulation response. This feedback
system samples the output voltage at the pulse width
modulator fixed clock frequency, nominally 550KHz. Multiple
converters can be synchronized to a system clock in the
500KHz to 700KHz range or to the synchronization output of
one converter. Under voltage lockout, primary and secondary
referenced inhibit, soft start and load fault protection are
provided on all models.
These converters are hermetically packaged in two
enclosure variations, utilizing copper core pins to minimize
resistive DC losses. Three lead styles are available, each
fabricated with International Rectifier’s rugged ceramic lead-
to-package seal assuring long term hermeticity in the most
harsh environments.
AFL
Features
n 80V To 160V Input Range
n 3.3V Output
n High Power Density - 46W/in3
n 66W Output Power
n Parallel Operation with Stress and Current
Sharing
n Low Profile (0.380") Seam Welded Package
n Ceramic Feed thru Copper Core Pins
n High Efficiency - to 74%
n Full Military Temperature Range
n Continuous Short Circuit and Overload
Protection
n Remote Sensing Terminals
n Primary and Secondary Referenced
Inhibit Functions
n Line Rejection > 50dB - DC to 50KHz
n External Synchronization Port
n Fault Tolerant Design
n Dual Output Versions Available
n Standard Microcircuit Drawing Available
Manufactured in a facility fully qualified to MIL-PRF-38534,
these converters are fabricated utilizing DSCC qualified
processes. For available screening options, refer to device
screening table in the data sheet. Variations in electrical,
mechanical and screening can be accommodated. Contact
IR Santa Clara for special requirements.
www.irf.com
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12/12/06