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LTC6902 Model Produces Incorrect Results in LTspice 24

Thread Summary

The user reported that the LTC6902 model in LTSpice version 24.0.3 does not phase shift OUT2 correctly, and the startup behavior is different from expected. The model works as intended in LTSpice XVII Version 17.0.37.0. The issue was acknowledged and addressed by the support team, and the fix should be documented in the LTspice model change log.
AI Generated Content
Category: Software
Product Number: LTSpice
Software Version: 24.0.3

Dear LTspice Team, 

The LTC6902 model is not working as expected in the LTSpice version 24.0.3. For some reason, OUT2 doesn’t seem to phase shift, and startup behavior is quite different.

Expected behavior should be like below:

OUT1: 0°

OUT2: 90°

OUT3: 180°

OUT4: 270°

This model is working correctly in the LTSpice XVII Version 17.0.37.0.

working model.

The simulation results of the same schematic with LTSpice 24.0.3:

unexpected behavior.

LTC6902 (1).asc

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[edited by: MStokowski at 5:02 PM (GMT -4) on 15 Aug 2024]