This document defines the PWM control chip features for the VRD12, VRM12 & IMVP7 CPU dc-dc converters used in Intel platforms. VR12/IMVP7 includes a Serial VID (SVID) interface; benefits of SVID can be seen in reduced number of required pins and 2 way communications between the CPU and VR. Future platform power delivery design guidelines will contain the actual platform implementations for IMVP7 or VRD12 in mobility, desktop and server market segments and takes precedent over targets shown in this document.