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TPSI2140-Q1: Insulation resistance measurement

Part Number: TPSI2140-Q1
Other Parts Discussed in Thread: TPSI2072-Q1

Hi TI,

I want to use Battery V- reference of TPSI2140-Q1 design to measure the insulation resistance measurement for 1500V~1600V battery system.
I have checked the TPSI2140 datasheet, the standoff voltage is +/-1400V. But I see the avalance voltage can operation higher than 1400V to 1700V even 1900V.
May I know that if our design through the S1 and S2 current is about 100uA, what is the maximum standoff voltage? and time?
Or TI has any suggest design or component?