Spinning off this thread from the Zen5 discussion thread to be able to have a more focused discussion. This thread is for any discussion people want to have on integrated voltage regulators. Of particular interest are what Intel and AMD are using in their more modern processors. I won't be reposting here the ongoing discussion but I am linking to 2 AMD patents related to their power distribution network on their modern processors for anyone that wants to read those as well (thanks to @PJVol for supplying the links in the other thread). The discussion in the Zen5 thread has revolved around AMD's designs but Intel discussion is welcome as well.
AMD Patents:
A brief summary of my interpretation of AMD's design based upon the patents is in this post.
AMD Patents:
US10218273B2 - On die voltage regulation with distributed switches - Google Patents
A distributed voltage regulator has switches that function as resistors and are distributed in rows in a grid pattern across a regulated voltage domain. The switches receive an unregulated voltage and supply the regulated voltage. Switch control lines selectively enable the switches to achieve...
patents.google.com
US9946278B2 - Droop detection for low-dropout regulator - Google Patents
A processor system includes first and second regulators for regulating an adjusted supply voltage. In one embodiment, the regulator system comprises a digital low-dropout (DLDO) control system comprising first and second regulators that generate a plurality of control signals to regulate an...
patents.google.com
A brief summary of my interpretation of AMD's design based upon the patents is in this post.
