The RT3662AM is a dual-output PWM controller with 3 integrated drivers, and it is compliant with AMD SVI2 Voltage Regulator Specification to support both CPU core (VDD) and Northbridge portion of CPU (VDDNB). The RT3662AM features CCRCOT (Constant Current Ripple Constant On-Time) with G-NAVP (Green-Native AVP), which is Richtek's proprietary topology. G-NAVP makes it an easy setting controller to meet all AMD AVP (Adaptive Voltage Positioning) VDD/VDDNB requirements. The droop is easily programmed by setting the DC gain of the error amplifier. With proper compensation, the load transient response can achieve optimized AVP performance. The controller also uses the interface to issue VOTF Complete and to send digitally encoded voltage and current values for the VDD/VDDNB domains. The RT3662AM can operate in diode emulation mode to enhance the light load efficiency. And it provides the current gain adjustment capability by pin setting. The RT3662AM provides power good indication, thermal indication (VRHOT_L), and it features complete fault protection functions including over current, over voltage and under voltage.
- AMD SVI2 Mobile CPU
- Laptop Computer