RT3674FE Datasheet | Richtek

Description The RT3674FE is a synchronous buck controller which supports triple output rails and can fully meet AMD SVI3 requirements. The RT3674FE adopts GNAVPTM (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 AMD CPU/GPU requirements of AVP (Adaptive Voltage Positioning). Based on the G-NAVPTM topology, the RT3674FE features a new generation of quick response mechanism (Adaptive Quick Response, AQR) to optimize AVP performance during load transient and reduce output capacitors. The RT3674FE integrates a high accuracy ADC for reporting and a non-volatile memory (NVM) to store custom configurations, such as output current scale, auto phase add/drop threshold, switching frequency, overcurrent threshold or AQR trigger level. It also features plete fault protection functions including overvoltage (OV), undervoltage (UV), overcurrent (OC) and undervoltage lockout (UVLO). The RT3674FE provides independent enable, power good and temperature sense for each output rail. It also supports several functions which can be set by I2C interface. 2 Applications - SVI3 AMD Core Supply - Desktop and Notebook puter - AVP Step-Down Converter 3 Features - AMD SVI3 Rev 1.01 patible - 4/3/2/1 Phase (Rail A) +1 Phase (Rail B) +1 Phase (Rail C) PWM Controller - G-NAVPTM (Green Native Adaptive Voltage Positioning) Topology - 0.5% DAC Accuracy - Differential Remote Voltage Sensing - Built-in ADC for Reporting - Accurate Current Balance - Diode Emulation Mode (DEM) at Light Load - Fast Transient Response: Adaptive Quick Response (AQR) - OVP, OCP and UVP with Flag - Switching Frequency Setting - Auto Phase Add/Drop with DEM for Excellent Efficiency - Voltage on the Fly (VOTF) Enhancement - Acoustic Noise Suppression - Zero Load-line - Standard I2C Protocol Interface - Internal Non-Volatile Memory (NVM) to Store Custom Configurations - Current Balance Gain Adjustment...