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PDF RT3606BE Data sheet ( Hoja de datos )
| Número de pieza | RT3606BE | |
| Descripción | Dual Channel PWM Controller | |
| Fabricantes | Richtek | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RT3606BE (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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®
RT3606BE
Dual Channel PWM Controller for IMVP8 CPU Core
Power Supply
General Description
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 SVID code ranging from 0.25V to 1.52V
with 5mV per step. The RT3606BE integrates a high
accuracy ADC 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.
Features
Intel IMVP8 Serial VID Interface Compatible Power
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
To PCH
To CPU
RT3606BE
PGOOD
PWM1
VR_HOT PWM2
VCLK
VDIO
PWM3
PWMA2
ALERT PWMA1
Driver
Driver
Driver
Driver
Driver
MOSFET
MOSFET
MOSFET
MOSFET
MOSFET
VCORE
VAXG
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
DS3606BE-02 June 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
1 page  
Operation
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).
The G-NAVPTM controller is one type of current mode
constant on-time control with DC offset cancellation. The
approach can not only improve DC offset problem for
increasing system accuracy but also provide fast transient
response. When current feedback signal reaches COMP
signal, the RT3606BE generates an on-time width to
achieve PWM modulation.
TON GEN/Driver Interface
Generate the PWM1 to PWM3 sequentially according to
the phase control signal from the Loop Control/Protection
Logic. Pulse width is determined by current balance result
and TONSET pin setting. Once quick response mechanism
is triggered, VR will allow all PWM to turn on at the same
time. PWM status is also controlled by Protection Logic.
Different protections may cause different PWM status
(Both High-Z or LG turn-on).
SVID Interface/Configuration Registers/Control
Logic
The interface receives the SVID signal from CPU and sends
the relative signals to Loop Control/Protection Logic for
loop control to execute the action by CPU. The registers
save the pin setting data from ADC output. The Control
Logic controls the ADC timing and generates the digital
code of the VID for VSEN voltage.
Loop Control/Protection Logic
It controls the power on sequence, the protection behavior,
and the operational phase number.
MUX and ADC
The MUX supports the inputs from SET1, SET2, SET3,
SETA1, SETA2, IMONI_M, IMONI_A, TSEN or TSENA.
The ADC converts these analog signals to digital codes
for reporting or performance adjustment.
RT3606BE
Current Balance
Each phase current sense signal is sent to the current
balance circuit which adjusts the on-time of each phase
to optimize current sharing.
Offset Cancellation
Cancel the current/voltage ripple issue to get the accurate
VSEN.
UVLO
Detect the DVD and VCC voltage and issue POR signal as
they are high enough.
DAC
Generate an analog signal according to the digital code
generated by Control Logic.
Soft-Start & Slew Rate Control
Control the Dynamic VID slew rate of DAC according to
the SetVID fast or SetVID slow.
Error Amp
Error amplifier generates COMP/COMPA signal by the
difference between VSEN/VSENA and FB/FBA.
RSET/RSETA
The Ramp generator is designed to improve noise immunity
and reduce jitter.
PWM CMP
The PWM comparator compares COMP signal and current
feedback signal to generate a signal for TON trigger.
IMON Filter
IMON Filter is used to average sum current signal by
analog RC filter.
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
DS3606BE-02 June 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
5
5 Page 
VID7
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
VID6
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
VID5
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
VID4
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
VID3
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
VID2
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
VID1
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
RT3606BE
VID0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
HEX
B9
BA
BB
BC
BD
BE
BF
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
CA
CB
CC
CD
CE
CF
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
DA
DB
DC
DD
Voltage (V)
1.17
1.175
1.18
1.185
1.19
1.195
1.2
1.205
1.21
1.215
1.22
1.225
1.23
1.235
1.24
1.245
1.25
1.255
1.26
1.265
1.27
1.275
1.28
1.285
1.29
1.295
1.3
1.305
1.31
1.315
1.32
1.325
1.33
1.335
1.34
1.345
1.35
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
DS3606BE-02 June 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet RT3606BE.PDF ] | |
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