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PDF RT3607CE Data sheet ( Hoja de datos )
| Número de pieza | RT3607CE | |
| Descripción | Multi-Phase PWM Controller | |
| Fabricantes | Richtek | |
| Logotipo |  |
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®
RT3607CE
Multi-Phase PWM Controller for CPU Core Power Supply
General Description
The RT3607CE is an IMVP8 compliant CPU power
controller which includes two voltage rails : a 4/3/2/1 phase
synchronous Buck controller, the CORE VR, a 3/2/1 phase
synchronous Buck controller, the AXG VR. The RT3607CE
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 RT3607CE also features a quick response
mechanism for optimized AVP performance during load
transient. The RT3607CE supports mode transition
function with various operating states. A serial VID (SVID)
interface is built in the RT3607CE to communicate with
Intel IMVP8 compliant CPU. The RT3607CE 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 RT3607CE 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 RT3607CE
integrates a high accuracy ADC for platform setting
functions, such as quick response trigger level or over-
current level. Besides, the setting function also supposes
this two rails address exchange. The RT3607CE 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 RT3607CE is available in the WQFN-56L
6x6 small foot print package.
Features
Intel IMVP8 Serial VID Interface Compatible Power
Management States
4/3/2/1 Phase (Core) + 3/2/1 Phase (AXG) 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
RT3607CE
PWM1
PGOOD
VR_HOT
VCLK
VDIO
ALERT
PWM2
PWM3
PWM4
PWMA1
PWMA2
PWMA3
Driver
Driver
Driver
Driver
Driver
Driver
Driver
MOSFET
MOSFET
MOSFET
MOSFET
MOSFET
MOSFET
MOSFET
VCORE
VAXG
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
DS3607CE-01 June 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
1 page  
Operation
The RT3607CE 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 RT3607CE generates an on-time width to
achieve PWM modulation.
TON GEN/Driver Interface
Generate the PWM1 to PWM4 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, 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.
RT3607CE
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 for average sum current signal by
analog RC filter.
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
DS3607CE-01 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
RT3607CE
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.
DS3607CE-01 June 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet RT3607CE.PDF ] | |
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