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Performance of a spacecraft DC-DC converter breadboard modified for low temperature operationA 1OW 3OV/5.OV push-pull dc-dc converter breadboard, designed by the Jet Propulsion Laboratory (JPL) with a +50 C to +5 C operating range for the Cassini space probe, was characterized for lower operating temperatures. The breadboard converter which failed to operate for temperatures below -125 C was then modified to operate at temperatures approaching that of liquid nitrogen (LN2). Associated with this low operating temperature range (greater than -196 C) was a variety of performance problems such as significant change in output voltage, converter switching instability, and failure to restart at temperatures below -154 C. An investigation into these problems yielded additional modifications to the converter which improved low temperature performance even further.
Document ID
19960028164
Document Type
Conference Paper
Authors
Gerber, Scott S. (NYMA, Inc. Brook Park, OH United States)
Stell, Chris (California Inst. of Tech. Pasadena, CA United States)
Patterson, Richard (NASA Cleveland, OH United States)
Ray, Biswajit (NASA Cleveland, OH United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1996
Subject Category
Spacecraft Propulsion and Power
Report/Patent Number
E-10294
NAS 1.15:107245
NASA-TM-107245
Meeting Information
Intersociety Energy Conversion Engineering Conference(Washington, DC)
Funding Number(s)
PROJECT: RTOP 233-02-0C
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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NameType 19960028164.pdf STI