ATR28XXS

The ATR28XXS Series of DC/DC converters feature high power density and an extended temperature range for use in military and industrial applications.  Designed to MIL-STD-704D input requirements, these devices have nominal 28VDC inputs with 3.3V, 5V, 12V and 15V single  outputs to satisfy  a wide range of requirements. The circuit design incorporates  a pulse width modulated single forward topology operating in the feed-forward mode at a nominal switching frequency of 550KHz.   Input to output  isolation is achieved through the use of transformers in the forward and feedback circuits.

The ATR28XXS advanced feedback design provides fast loop response for superior line and load transient  characteristics and offers greater reliability and radiation tolerance than devices incorporating optical feedback circuits.

Three standard temperature grades are offered with screening options.  Refer to Part Number section.  These devices ATR28XXS can be provided in a standard plug-in package  for PC mounting or in a flanged package for more severe environments.

These ATR28XXS converters are manufactured in a facility certified to MIL-PRF-38534. All processes used to manufacture these converters have been qualified to enable Advanced Analog to deliver compliant devices.

Four screening grades are available to satisfy a wide range of requirements. The CH grade converters are fully compliant to MIL-PRF-38534 for class H.  The HB grade converters are processed to full class H screening but do not have class H element evaluation as required by MIL-PRF-38534.  Both  grades  are fully  tested to confirm operation over the full military temperature range without derating of output power.  The ES version is a full temperature device without the full class H or element evaluation.  The non-suffix device ATR28XXS is a low cost limited temperature range option.  Variations in electrical, mechanical and screening can be accommodated.