The RT3634CT is an IMVP9.2 compliant CPU power controller that includes three voltage rails: a 4-phase synchronous buck controller for VCCCORE VR, a 3-phase synchronous buck controller for VCCGT VR, and a 1-phase synchronous buck controller for VCCSA VR.The output of each rail can be configured to support the desired phase assignments up to a maximum of 4 phases for VCCCORE, 3 phases for VCCGT, and 1 phase for VCCSA. For example, the RT3634CT supports output operations, such as 4+3+1, 4+2+1, and 3+2+1.The RT3634CT adopts the Smart Phase Management (SPM) feature, to achieve maximum efficiency in all load ranges. Thresholds for automatic phase addition or removal are user-programmable using the I2C protocol interface.The RT3634CT adopts G-NAVPTM (Green Native AVP), which is Richtek's proprietary topology derived from the finite DC gain of the EA amplifier with current mode control.This topology simplifies the droop to meet all Intel CPU requirements for AVP (Adaptive Voltage Positioning). Based on the G-NAVPTM topology, the RT3634CT features a new generation of quick response mechanism (Adaptive Quick Response, AQR) to optimize AVP performance during load transients and reduce output capacitors. The RT3634CT supports mode transition functions with various operating states. A serial VID (SVID) interface is built in to communicate with Intel IMVP9.2 compliant CPUs. The RT3634CT supports a baby phase (Heterogeneous Phase) configuration, utilizing relatively lower power devices with smaller ratings, relatively larger inductance values, and register functions for phase 1 to enhance efficiency under light load conditions.The RT3634CT offers built-in non-volatile memory (NVM) for platform setting functions, such as ICCMAX, switching frequency, or AQR trigger levels. The RT3634CT provides VR ready output signals. It also features complete fault protection functions, including overvoltage (OV), overcurrent (OC), undervoltage (UV), and undervoltage-lockout (UVLO). The RT3634CT is available in a WQFN-60L 7x7 package. The recommended junction temperature range is from -40°C to 125°C.
Applications
- IMVP9.2 Intel Core Power Supply
- Notebooks/Desktop Computers
- AVP Step-Down Converters