HMA423R409T_15 Datasheet, PDF (1/8 Pages) International Rectifier – HIGH RELIABILITY DC-DC CONVERTER

PD-97431
HIGH RELIABILITY
DC-DC CONVERTER
HMA423R409T/ES
+42V Input, Triple Output
Description
The HMA423R409T/ES is a 50W triple output, high
reliability DC-DC converter designed for rugged
environments and extended temperature operations
such as those encountered in military, aerospace and
industrial applications. The converter is in full
compliance with the conducted emission, CE03 of MIL-
STD-461C. Line rejection of greater than 40dB provides
rejection of input noise. Features include small size,
low weight and conservative component stress de-
rating.
An external inhibit port is provided to enable a low power
dissipation “stand-by” operation mode. A separate sync
input is provided to allow the user to “pull” the switching
frequency to a desired frequency.
The converter is enclosed in a hermetic 3.00” x 2.00” x
0.475” Aluminium-Silicon-Carbide, ALSiC, package and
weighs less than 100 grams. The package utilizes
rugged ceramic feed-thru copper core pins and is
sealed using parallel seam welding.
Manufactured in a facility fully qualified to MIL-PRF-
38534, this converter is fully screened to the requirements
as described in the device screeening table in this
document.
HMA
Features
n 36.5 to 48V DC Input Range
n Up to 50W (peak) Output Power
n +3.4V Main Output, ±9.2V Aux. Output
n Internal EMI Filter; Converter capable of
meeting MIL-STD-461C CE03 and CS01
n Magnetically Coupled Feedback
n High Efficiency
n -55°C to +125°C Operating Temperature
Range
n 100MΩ @ 500V DC Isolation
n Under-Voltage Lockout
n Short Circuit and Overload Protection
n Output Over voltage Limiter
n External Inhibit
n Sync Frequency Input
n Low Weight, < 100 grams
Applications
n Military Aircraft
n Commercial Aircraft
n Ground Equipment
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1
10/26/09