IRF CHL8314 Digital multi-phase buck controller intel vr11.x compliant digital pwm controller Datasheet

Digital Multi-Phase Buck Controller
DESCRIPTION
 Compatible with IR ATL Drivers and tri-state drivers
 9 bytes of NVM storage available for customer use
 +3.3V supply voltage; 0ºC to 85ºC Ambient
operation
 RoHS Compliant, MSL level 1 package
APPLICATIONS
 Intel® VR11.x CPU VRD and VRM; DDR Memory
 High Performance Desktops, Servers and
Graphics Cards
 Over-clocking and High-Efficiency Application
The CHL8314 provides extensive OVP, UVP, OCP, and
OTP fault protection. Device and fault configuration
parameters are easily defined using the IR Power Designer
GUI and stored in on-chip non-volatile memory (NVM).
The 3-pin SMBus interface can be used to monitor a variety
of operating parameters on up to seven CHL8314 based
VRs. The controller includes a unique sensorless and
lossless input current monitoring capability.
PIN DIAGRAM
IRTN1
BASIC APPLICATION
CHL8314 supports NTC temperature sense to report
temperature and trigger VR HOT and OTP faults. Digital
thermal balancing allows proportional current imbalance
between phases.
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 SMBus interface for configuring and monitoring;
SMBus commands include monitoring input
current and power
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 SMBus Fault Indicators: OVP, UVP, OCP, OTP
The CHL8314 deploys a number of efficiency shaping
features such as variable MOSFET gate drive versus load,
programmable PSI modes for optimum light-load along
with programmable phase shedding to autonomously
add/drop phases versus load.
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 Enables Thermal Phase Balancing
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 Adaptive Transient Algorithm minimizes capacitors
ISEN4
 1-phase to 2-phase PSI for Light Loads
The CHL8314 includes a customized set of digital overclocking features which require no external components.
Gaming applications can use the SMBus interface to place
the VRD into “Gamer Mode” to extend VID up to 2.3V with
6.25 mV resolution.
IRTN4
 IR Efficiency Shaping features a Variable Gate Drive
and Dynamic Phase Control
ISEN3
 Customized Digital Over-Clocking features an
easy-to-use SMBus Gamer command and a Gamer
VID control up to 2.3V, Gamer Vmax, VID Override
or Track, Digital Load-Line Adjust, Gamer OC/OVP,
Gamer OFF pin and Gamer OTP
ISEN2
IRTN3
 Programmable 1-phase to 4-phase operation
The CHL8314 is a 4-phase digital synchronous buck
controller for core regulation of high-performance Intel®
VR11.1 and VR11.0 platforms. The CHL8314 is fully
compliant with VR11.1 including Power Status Indicator
(PSI) and for improved light load efficiency and accurate
current output (IMON).
IRTN2
 Intel VR11.x compliant Digital PWM Controller
ISEN1
FEATURES
CHL8314
48 47 46 45 44 43 42 41 40 39 38 37
RCSP
1
36
VCC
RCSM
VCC
2
35
34
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VCPU
4
33
PWM4
32
PWM3
31
PWM2
30
PWM1
29
28
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27
26
VAR_GATE
VR_HOT
25
VR_READY
VRTN
SADDR/
GAMER_OFF
IMON
3
CHL8314
48 Pin
7mmx 7mm
QFN
TOP VIEW
5
6
7
RRES
8
VINSEN
9
TSEN
10
EN
11
V18A
12
GND
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VCC
Figure 1: CHL8314 Basic Application Circuit
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October 12, 2011 | FINAL | V1.06
VID0
VID1
VID2
VID3
VID4
VID5
VID6
VID7
PSI#
SCL
SDA
SALERT#
13 14 15 16 17 18 19 20 21 22 23 24
Figure 2: CHL8314 Package Top View
Digital Multi-Phase Buck Controller
CHL8314
ORDERING INFORMATION
CHL8314 ―    
Package
QFN
Tape & Reel Qty
3000
Part Number
CHL8314CRT
QFN
3000
CHL8314-XXCRT
T – Tape and Reel
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ISEN4
ISEN3
ISEN2
IRTN3
IRTN2
ISEN1
IRTN1
C – Operating Temperature
(Commercial Standard)
XX – Configuration File ID
IRTN4
Notes:
1. “xx” indicates customer specific configuration file.
R – Package Type (DFN)
48 47 46 45 44 43 42 41 40 39 38 37
RCSP
1
36
VCC
RCSM
VCC
2
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3
35
34
VCPU
4
33
PWM4
32
PWM3
31
PWM2
30
PWM1
29
28
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27
VRTN
SADDR/
GAMER_OFF
IMON
CHL8314
48 Pin
7mmx 7mm
QFN
TOP VIEW
5
6
7
RRES
8
VINSEN
9
GND
VCC
TSEN
10
EN
11
26
VAR_GATE
VR_HOT
V18A
12
25
VR_READY
VID0
VID1
VID2
VID3
VID4
VID5
VID6
VID7
PSI#
SCL
SDA
SALERT#
13 14 15 16 17 18 19 20 21 22 23 24
Figure 3: CHL8314 Top View Enlarged
2
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October 12, 2011 | FINAL | V1.06
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