Regarding supply voltage range VDD_IO_DDR0 pin in S32G datasheet, We have the following queries.
1. When we use the Buck3 from VR5510. If we take in to the transient case of the buck. We get a minimum of 1.05 V for 1.1V typical considering the +/-50mV margin in buck during transient conditions.
As shown below the S32G datasheet has a minimum voltage requirement of 1.06V by a margin of 10mV. So, here the supply criteria fails. Since we follow the S32G ref design let us know if this condition will happen or we can overlook this failure margin.
2. Similarly the ripple voltage requirement of VDD_IO_DDR0 is +/-2.5% , But the output of Buck3 in VR5510 has a PFM accuracy level of 3%. hence this also fails. let us know how to approach this theoritical failure.
