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Original question:

BQ76952: Balancing 9 Adjacent Cells in LTspice – Vgs Negative for Upper FETs (Cell16–Cell12)

BQ76952: Is This the Correct Way to Simulate External Cell Balancing with BQ769x2 in LTspice?

Michelle Mathew
Prodigy 190 points
Part Number: BQ76952

Tool/software:

I’m working on simulating external passive cell balancing with the BQ769x2 AFE in LTspice. I’ve set up the circuit using external N-MOSFETs and bleed resistors.

I’ve attached a screenshot of my LTspice schematic — could you please confirm if this is the correct approach to simulate external cell balancing with the AFE?

Are there any specific modeling techniques, node referencing, or behavioral models recommended to accurately reflect how the BQ769x2 drives the external FETs?