General Description
The RT8859M is a VR12/IMVP7 compliant CPU power controller which includes two voltage rails : a 4/3/2/1 phase synchronous buck controller, the CORE VR, and a single phase buck controller, the AXG VR. The RT8859M adopts G-NAVP™ (Green Native AVP), which is Richtek's proprietary topology derived from finite DC gain compensator with current mode control, making it an easy setting PWM controller, meeting all Intel CPU requirements of AVP (Active Voltage Positioning).

FEATUREs
4/3/2/1 + 1 Phase PWM Controller
G-NAVP™ Topology
Serial VID Interface
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
Multiple and Single Phase
Fast Transient Response
VR12 / IMVP7 Compatible Power Management States
VR Ready Indicator
Thermal Throttling
Current Monitor Output
Switching Frequency up to 1MHz per Phase
OVP, UVP, OCP, NVP, UVLO
Slew Rate Setting/Address Flip Function
External No-Load Offset Setting for both Rails
DVID Improvement
Small 56-Lead WQFN Package
RoHS Compliant and Halogen Free