®
RT3606BE
Dual Channel PWM Controller for IMVP8 CPU Core
Power Supply
General Description
Features
Intel IMVP8 Serial VID Interface Compatible Power
The RT3606BE 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
RT3606BE 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 RT3606BE also features a quick
response mechanism for optimized AVP performance
during load transient. The RT3606BE supports mode
transition function with various operating states. A serial
VID (SVID) interface is built in the RT3606BE to
communicate with Intel IMVP8 compliant CPU. The
RT3606BE 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
RT3606BE 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 SVIDcode ranging from 0.25V to 1.52V
with 5mV per step. The RT3606BE integrates a high
accuracyADC 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 RT3606BE 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
RT3606BE is available in the WQFN-48L 6x6 small foot
print package.
Management States
3/2/1 Phase (CORE VR) + 2/1 Phase (AXG VR) PWM
Controller
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
OVP, OCP, NVP, UVLO
Slew Rate Setting/Address Flip Function
Rail Address Flexibility
DVID Enhancement
Applications
IMVP8 Intel Core Supply
Notebook/ Desktop Computer Multi-phase CPU Core
Supply
AVP Step-Down Converter
Simplified Application Circuit
RT3606BE
To PCH
PGOOD
VR_HOT
VCLK
PWM1
Driver
Driver
Driver
Driver
MOSFET
MOSFET
MOSFET
MOSFET
V
V
CORE
PWM2
PWM3
To CPU
PWMA2
VDIO
ALERT
PWMA1
Driver
MOSFET
AXG
Copyright 2018 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS3606BE-07 August 2018
www.richtek.com
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RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
