The Analysis of Current-Mirror MOSFETs for Use in Radiation Environments.

Abstract

Experiments were conducted on current-mirror MOSFETs to examine their suitability for use in radiation environments. These devices, which allow low loss load current sensing (defined by a current-ratio n'), are an important element of many power integrated circuits (PICs). Total-dose testing demonstrated that the current ratio was virtually unaffected for many operating conditions. In all cases, changes were largest when sense resistance was largest and minimal when sense voltage was approximately equal to the load source's voltage. In addition, testing verified the feasibility of using sense-cell MOSFETs for applications which require radiation exposure. A constant-current op-amp circuit showed minimal current shifts, using proper circuit design, following total-dose exposure. Dose-rate testing showed the feasibility of using sense voltage to trigger gamma-dot protection through drain-source voltage clamping, providing a relatively inexpensive alternative to voltage derating. (rh)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1988
Accession Number
ADA212527

Entities

People

  • Marino J. Martinez

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Charged Particles
  • Computers
  • Dermatologic Agents
  • Detectors
  • Dose Rate
  • Electrical Engineering
  • Engineering
  • Gamma Rays
  • Integrated Circuits
  • Ionization
  • Ionizing Radiation
  • Measurement
  • Radiation Effects
  • Semiconductors
  • Tensile Strength
  • Transistors

Fields of Study

  • Physics

Readers

  • Integrated Circuit Design and Technology.
  • Nuclear and Radiation Engineering.
  • Software Engineering