S32K344 + FS26: Keeps resetting power output in normal mode (All voltage rails)

[gopalakrishna]

Hi Team,

I am having difficulties setting up the S32K344 + FS26 (MFS2613AMDA2AD) combination. The HW design is EVB based (so I can discard issues with the HW setup)

MCU Part No : S32K344EHT1VPBST (IC MCU 32BIT 4MB FLASH 172QFP)

PMIC Part No : MFS2613AMDA2AD

My problem is that, PMIC all voltage outputs not stable.

Schematic followed as per EVB (S32K3X4EVB-T172)

Please let me know the issue.

Thanks.

Regards,

Gopala

[guoweisun]

Hi 

Do yo mean you refer to our EVB for schematic design,right?

If so can you test some waveform about VBAT(input voltage)/Vpre/VPRE_SW with load 300mA.