Re: phase margin of voltage regulator in the nonvolatile me
The larger PM , the more stable of your regulator, and less ringing when dynamic load is asserted. And real chip have many parasitics which will probably generate
extra pole around ur unit gain frequency, these extra poles will degrade ur PM.
so choose PM > 45 or PM > 60 are prefered to make ur design more robust.
I think u should challenge him why he designed PM < 45 ?
If he can design PM > 45, why he want to reduce PM to less than 45 ?
maybe he had other reasons ...!?