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Total dose effects in a linear Voltage regulator

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7 Author(s)
Adell, P.C. ; Radiat. Effects & Reliability Group, Vanderbilt Univ., Nashville, TN, USA ; Schrimpf, R.D. ; Holman, W.T. ; Todd, J.L.
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Experiments and simulations are used to analyze the total-dose response of a linear voltage regulator. Degradation of the dynamic output range of the error amplifier is determined to be responsible for the regulator failure. We present a first-order model to reproduce total dose circuit and system response. Modification of the bias circuitry in the error amplifier using beta compensation techniques is shown to harden the system to a significantly higher total dose level.

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Nuclear Science, IEEE Transactions on  (Volume:51 ,  Issue: 6 )