The RT3606BC is an IMVP8 compliant CPU power controller which includes two voltage rails : a 3/2/1 phase synchronous Buck controller, the CORE VR and a 2/1 phase synchronous Buck controller, the AXG VR. The RT3606BC 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 RT3606BC also features a quick response mechanism for optimized AVP performance during load transient. The RT3606BC supports mode transition function with various operating states. A serial VID (SVID) interface is built in the RT3606BC to communicate with Intel IMVP8 compliant CPU. The RT3606BC supports VID on-the-fly function with three different slew rates : Fast, Slow and Decay. By utilizing the G-NAVPTM topology, the operating frequency of the RT3606BC varies with VID, load and input voltage to further enhance the efficiency even in CCM. Moreover, the G-NAVPTM with CCRCOT (Constant Current Ripple COT) technology provides superior output voltage ripple over the entire input/output range. The built-in high accuracy DAC converts the SVID code ranging from 0.25V to 1.52V with 5mV per step. The RT3606BC integrates a high accuracy ADC for platform setting functions, such as quick response trigger level or over-current level. Besides, the setting function also supports this two rails address exchange. The RT3606BC provides VR ready output signals. It also features complete fault protection functions including over-voltage (OV), negative voltage (NV), over-current (OC) and under-voltage lockout (UVLO). The RT3606BC is available in the WQFN-60L 7x7 small foot print package.


  • IMVP8 Intel Core Supply
  • Notebook/ Desktop Computer Multi-phase CPU Core Supply
  • AVP Step-Down Converter
Key Spec.
Status Active
VID Table Support IMVP8
Number of Phases 2;3
Vcc (typ) (V) 5
Vin (min) (V) 10.8
Vin (max) (V) 13.2
Accuracy (Vout>=1V) (+/- %) 0.5
Freq (typ) (kHz) 400
Built-in DAC Generator Yes
Number of MOSFET Drivers 1;2
Features Adjustable Frequency;DCR Current Sense;Diode Emulation Mode;Droop Control;Enable Input;Fast Transient Response;G-NAVP Control;OCP;OVP;Power Good
Package Type WQFN7x7-60
  • Intel IMVP8 Serial VID Interface Compatible Power Management States
  • 3/2/1 Phase (CORE VR) + 2/1 Phase (AXG VR) PWM Controller
  • 2 Embedded MOSFET Drivers at the CORE VR, 1 Embedded MOSFET Driver at the AXG VR
  • G-NAVPTM (Green Native Adaptive Voltage Positioning) Topology
  • 0.5% DAC Accuracy
  • Differential Remote Voltage Sensing
  • Built-in ADC for Platform Programming
  • Accurate Current Balance
  • System Thermal Compensated AVP
  • Diode Emulation Mode at Light Load Condition for Single Phase Operation
  • Fast Transient Response
  • VR Ready Indicator
  • Thermal Throttling
  • Current Monitor Output
  • Slew Rate Setting/Address Flip Function
  • Rail Address Flexibility
  • DVID Enhancement
Technical Documents
TitleItem TypeLast UpdateDownload
Introduction to Richtek VCORE Solutions App. Note2017/05/31