mm , it seems interesting topic , i don't about it
but i think it is related to that the PLL in aquastion phase can be feed with very regulated voltage but this source can source high current due to charge pump current , but as the PLL coming close 2 lock require the regulator to be very good and the noise in power supply is minimum 2 get the best phase noise and jettier performance , and so the regulator current will be less
so the regulator change from phase 2 phase ,
is this what u talking about or not ?
khouly