®
RT3602AP
Triple Channel PWM Controller for IMVP8 Mobile CPU Core
Power Supply
General Description
The RT3602AP is an IMVP8 compliant CPU power
controller which includes three voltage rails : a 2/1 phase
synchronous Buck controller, the MAIN VR, a single phase
synchronous Buck controller, the auxiliary VR, and a
single phase synchronous Buck controller, the VCCSA
VR. The RT3602AP adopts G-NAVP
TM
(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-
NAVP
TM
topology, the RT3602AP also features a quick
response mechanism for optimized AVP performance
during load transient. The RT3602AP supports mode
transition function with various operating states. A serial
VID (SVID) interface is built in the RT3602AP to
communicate with Intel IMVP8 compliant CPU. The
RT3602AP supports VID on-the-fly function with three
different slew rates : Fast, Slow and Decay. By utilizing
the G-NAVP
TM
topology, the operating frequency of the
RT3602AP varies with VID, load and input voltage to further
enhance the efficiency even in CCM. Moreover, the G-
NAVP
TM
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 SVID code ranging from 0.25V to 1.52V
with 5mV per step. The RT3602AP integrates a high
accuracy ADC for platform setting functions, such as quick
response trigger level. The RT3602AP 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 RT3602AP is available in the WQFN-48L 6x6 small
foot print package.
Features
Intel IMVP8 Serial VID Interface Compatible Power
Management States
2/1 Phase (MAIN VR) + Single Phase (Auxiliary VR)
+ Single Phase (VCCSA VR) PWM Controller
G-NAVP
TM
(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
Multiple or Single Phase Operation
Fast Transient Response
VR Ready Indicator
Thermal Throttling
Current Monitor Output
OVP, OCP, NVP, UVLO
DVID Enhancement
RoHS Compliant and Halogen Free
Applications
IMVP8 Intel Core Supply
Notebook/ Desktop Computer/ Servers Multi-phase CPU
Core Supply
AVP Step-Down Converter
Simplified Application Circuit
To PCH
RT3602AP
VR_READY PWM_AUXI
VR_HOT
Driver
MOSFET
V
AXG
V
SA
PWM_SA
Driver
MOSFET
To CPU
VCLK
VDIO
ALERT
PWM1_MAIN
PWM2_MAIN
Driver
Driver
MOSFET
MOSFET
V
CORE
Copyright
©
2019 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS3602AP-00
September 2019
www.richtek.com
1
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
