General Description

The RT3624BE is a synchronous buck controller which

supports 2 output rails and can fully meet Intel IMVP9.1

requirements. The RT3624BE 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 RT3624BE features a new

generation of quick response mechanism (Adaptive

Quick Response, AQR) to optimize AVP performance

during load transient and reduce output capacitors. The

RT3624BE integrates a high accuracy ADC for platform

and function settings, such as ICCMAX, switching

frequency, over-current threshold or AQR trigger level.

The RT3624BE provides VR Ready and thermal

indicators. It also features complete fault protection

functions including over-voltage (OV), under-voltage

(UV), over-current (OC) and under-voltage lockout

(UVLO).

Applications

IMVP9.1 Intel CORE/AXG Supply

Desktop and Notebook Computer

AVP Step-Down Converter

Features

Intel IMVP9.1 Compliant

4/3/2/1 Phase (CORE VR) + 2/1 Phase (AXG VR)

PWM Controller

G-NAVPTM (Green Native Adaptive Voltage

Positioning)Topology

0.5% DACAccuracy

Differential Remote Voltage Sensing

Built-in ADC for Platform Programming and

Reporting

Accurate CurrentBalance

Diode Emulation Mode at Light Load Condition

Fast Transient Response-Adaptive Quick

Response (AQR)

VR Ready Indicator

OVP,OCP, UVP with Flag

Switching Frequency Range Setting

DVID Enhancement

Acoustic Noise Suppression

Zero Load-line

Rail Disable

Support Phase Doubler RT9637 for CORE rail Up

to 6-Phase Operation (optional)

Support SPS Application (optional)

Soldering Good Detection

RT3624BE : Support Address 00 and 01

Small 52-Lead WQFN Package