There are three current sampling methods whichusesshunts in inverter legs as current sensors,tri-shunt,dual-shuntandsingle-shunt. S12ZVM-EFP supportsdual-shunt and single-shunt.
There are two demo projects, one is for dual-shunt and another one is for single-shunt.
EFP demo code has improved the startup performance as below based on dual shut sampling. AN5327 is an old software. Did you have single shut sampling for good startup performance?
Dedicated optimized for fuel pump application to achieve robust and fast start up. It meets the
strict start up condition < 150 ms from standstill to the rated speed
I can provide you only the SW which is available on the NXP site:
The SW for the AN5327 which is mentioned on the S12ZVM-EFP site https://www.nxp.com/design/development-boards/automotive-motor-control-development-solutions/magniv-...
can be downloaded from this link:
However, I would like to mention that this SW is for the MTRCKTSPNZVM128|Development Kit S12 MagniV | NXP
I hope it helps.