The RT3638AE is an IMVP9.2 compliant CPU power controller which includes three voltage rails: an 8-phase synchronous buck controller for VCCCORE VR, a single-phase synchronous buck controller for VCCGT VR and a single -phase synchronous buck controller for VCCSA VR. The output of each rail can be configured to support desired phase assignments up to a maximum phase count of 8 phases for VCCCORE, single phase for VCCGT and single phase for VCCSA. For example, the RT3638AE supports output operations of 8+1+1, 7+1+1, 6+1+1, etc. The RT3638AE supports Smart Phase Management (SPM) feature, to achieve maximum efficiency in all load range. Thresholds for automatic phase add/drop are user-programmable via I2C protocol interface. The RT3638AE adopts G-NAVPTM (Green Native AVP), which is Richtek's proprietary topology derived from finite DC gain of EA amplifier with current mode control, making it easy to set the droop to meet all Intel CPU requirements of AVP (Adaptive Voltage Positioning). Based on the G-NAVPTM topology, the RT3638AE features a new generation of quick response mechanism (Adaptive Quick Response, AQR) to optimize AVP performance during load transient and reduce output capacitors. The RT3638AE supports mode transition function with various operating states.
A serial VID (SVID) interface is built in to communicate with Intel IMVP9.2 compliant CPU. The RT3638AE offers built-in non-volatile memory (NVM) for platform setting functions, such as ICCMAX, switching frequency or AQR trigger level. The RT3638AE provides VR ready output signals. It also features complete fault protection functions including overvoltage (OV), overcurrent (OC), undervoltage (UV) and undervoltage lockout (UVLO). The RT3638AE is available in the WQFN-68L 8x8 foot print package. The recommended junction temperature is -40°C to 125°C.
Applications
- IMVP9.2 Intel Core Supply
- Desktops/Notebook Computer
- AVP Step-Down Converter