The RT3674AJ is a synchronous buck controller that supports triple output rails and can fully meet AMD SVI3 requirements. The RT3674AJ adopts G-NAVP (Green Native AVP), which is Richtek’s proprietary topology derived from the finite DC gain of the 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 RT3674AJ features a new generation of quick response mechanism (Adaptive Quick Response, AQR) to optimize AVP performance during load transients and reduce output capacitors. The RT3674AJ 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 thresholds, or AQR trigger level. It also features complete fault protection functions including overvoltage (OV), undervoltage (UV), overcurrent (OC) and undervoltage-lockout (UVLO). The RT3674AJ provides independent enable, power-good indicator, and temperature sense for each output rail. It also supports several functions set by the I2C interface. The recommended junction temperature range is -40°C to 125°C.
Applications
- SVI3 AMD Core Supply
- Desktop and Notebook Computer
- AVP Buck Converter