SLYY081B March   2018  – January 2024 AMC1305M25 , AMC1311 , AMC1311-Q1 , ISO1042 , ISO1042-Q1 , ISO5851 , ISO7741 , ISO7841 , ISOM8710 , UCC20225-Q1 , UCC20225A-Q1 , UCC21520 , UCC21540 , UCC23513 , UCC5390

 

  1.   1
  2.   Overview
  3.   Failure mode 1: High voltage across the isolation barrier
  4.   Failure mode 2: A combination of high voltage and high current close to the isolation barrier
  5.   Failure mode 2: Test results
  6.   Other TI reinforced isolators
  7.   Conclusion
  8.   References

Other TI reinforced isolators

The analysis and results presented in this paper are equally applicable to other reinforced isolators from TI, including ISO77xx digital isolators, ISO1042 isolated CAN transceivers, UCC21520 and UCC53xx isolated gate-drivers, and AMC13xx isolated ΣΔ modulators and isolated amplifiers.

GUID-20231005-SS0I-1895-2HGT-CN29QDCSNKWJ-low.jpgFigure 11 EOS damage is limited to the die that suffers the high-power event (ISO7841).
GUID-20231005-SS0I-318K-TTJR-43VFG85CBFFB-low.jpgFigure 12 EOS damage is limited to the driver-die that suffers the high-power event (ISO5841).