General Description

The RT8167B is a dual single-phase PWM controller with integrated MOSFET drivers, compliant with Intel IMVP7 Pulse Width Modulation Specification to support both CPU core and GPU core power. This part adopts G-NAVPTM (Green-Native AVP), which is a Richtek proprietary topology derived from finite DC gain compensator in constant on time control mode. G-NAVPTM makes this part an easy setting PWM controller to meet all Intel AVP (Active Voltage Positioning) mobile CPU/GPU requirements. The RT8167B uses SVID interface to control an 8-bit DAC for output voltage programming. The built-in high accuracy DAC converts the received VID code into a voltage value ranging from 0V to 1.52V with 5mV step voltage.

Features

Dual Single-Phase PWM Controller for CPU Core and GPU Core Power

IMVP7 Compatible Power Management States

Serial VID Interface

G-NAVPTM Topology

AVP for CPU VR Only

0.5% DAC Accuracy

0.8% System Accuracy

Differential Remote Voltage Sensing

Built-in ADC for Platform Programming

   SETINI/SETINIA for CPU/GPU Core VR Initial Startup Voltage

   TMPMAX to Set Platform Maximum Temperature

   ICCMAX/ICCMAXA for CPU/GPU Core VR Maximum Current

Power Good Indicator : VR_READY/VRA_READY for CPU/GPU Core Power

Thermal Throttling Indicator : VRHOT

Diode Emulation Mode at Light Load Condition

Fast Line/Load Transient Response

Switching Frequency up to 1MHz per Phase

OVP, UVP, NVP, OTP, UVLO, OCP

Small 40-Lead WQFN Package

RoHS Compliant and Halogen Free

Applications

IMVP7 Intel CPU/GPU Core Power Supply

Laptop Computers

AVP Step-Down Converter