
Richtek Technology
General Description
The RT8884C is a 4/3/2/1 multi-phase synchronous Buck controller designed to meet Intel VR12.5 compatible CPU specification with a serial VID control interface. The RT8884C adopts G-NAVPTM(Green Native AVP) which is Richteks 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).
FEATUREs
• Intel VR12.5 Serial VID Interface Compatible
• 4/3/2/1 Phase PWM Controller
• G-NAVPTM 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
• OVP, UVP, OCP, NVP, UVLO
• External No-Load Offset Setting
• DVID Enhancement
• Small 32-Lead WQFN Package
• RoHS Compliant and Halogen Free
APPLICATIONs
• VR12.5 Intel Core Power Supply
• Notebook/Desktop Computer/Servers Multi-phase CPU
Core Power Supply
• AVP Step-Down Converter