Hi, I'm working on a custom PCB and am having trouble powering the RT1052 processor.
I bring up the VDD_SNVS and then the 3V and 1V8 rails using LDOs. There is a 1ms delay (RC circuit) between the 3V rail and the DCDC_PSWITCH pin.
The problem I'm getting is that the 3V rail doesn't come up beyond 1V. I can scope the POR pin via a TP and that does go high to show the 3V rail is up but then goes low again and repeats every 250ms or so.
Any ideas what could be the problem?