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دیتاشیت - CHiL Semiconductor - DIGITAL MULTI-PHASE BUCK CONTROLLER

شماره قطعه CHL8314
شرح مفصل DIGITAL MULTI-PHASE BUCK CONTROLLER
تولید کننده CHiL Semiconductor 
آرم CHiL Semiconductor 


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CHL8314 شرح
PRELIMINARY PRODUCT BRIEF
CHL8314
DIGITAL MULTI-PHASE BUCK wCwOw.NDaTtaRShOeeLt4UL.cEomR
FEATURES
Intel VR11.x compliant Digital PWM Controller
Programmable 1-phase to 4-phase operation
Configurable switching frequency from 200 kHz to
1MHz per phase with accuracy better than 5%
Customized Digital Over-Clocking Features
o Easy-to-use SMBus Gamer command
o Gamer VID control up to 2.3V, Gamer Vmax,
VID Override or Track, Digital Load-Line Adjust,
Gamer OC/OVP, Gamer OFF pin, Gamer OTP
CHiL Efficiency Shaping Features
o Variable Gate Drive
o Dynamic Phase Control
1-phase or 2-phase PSI for Light Loads
Adaptive Transient Algorithm minimizes output bulk
capacitors
Enables Thermal Phase Balancing
SMBus Fault Indicators: OVP, UVP, OCP, OTP
SMBus interface for configuring and monitoring; SMBus
commands include monitoring input current and power
Compatible with CHiL ATL Drivers and tri-state Drivers
Nine bytes of NVM storage available for customer use
+3.3V supply voltage; 0ºC to 85ºC operation
RoHS Compliant, MSL level 1 package
48 47 46 45 44 43 42 41 40 39 38 37
RCSP
RCSM
VCC
VCPU
VRTN
SADDR/
GAMER_OFF
IMON
RRES
VINSEN
TSEN
EN
V18A
1
2
3
4
5
6
7
8
9
10
11
12
CHiL
CHL8314
48 Pin
7mmx 7mm
QFN
TOP VIEW
GND
36 VCC
35 NC
34 NC
33 PWM4
32 PWM3
31 PWM2
30 PWM1
29 NC
28 VCC
27 VAR_GATE
26 VR_HOT
25 VR_READY
13 14 15 16 17 18 19 20 21 22 23 24
Figure 1. CHL8314 48 Pin QFN Package
DESCRIPTION
The CHL8314 is a 4-phase digital multi-phase 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).
The CHiL CHL8314 includes a customized set of digital
over-clocking features which require no external
components. Gaming applications can use the SMBus
interface to place the VRD into “Gamer Mode”. Gamer Mode
features include Extended Gamer VID up to 2.3V with 6.25
mV resolution, Gamer Vmax, CPU VID Override or Track,
Digital Load-Line adjust, Gamer OC/OVP and Gamer OFF
pin.
The CHL8314 deploys a number of efficiency shaping
features. The CHL8314 can be configured to optimize
MOSFET gate drive versus load current, PSI can be
programmed to be one-phase or two-phases for optimum
light-load efficiency, and the controller can autonomously
add/drop phases in low-current and mid-current regions to
deliver 90+% efficiency across the entire load range.
CHiL’s unique Adaptive Transient Algorithm, based on non-
linear digital PWM algorithms, minimizes output bulk
capacitors.
CHL8314 supports NTC temperature sense to report
temperature and trigger VR HOT and OTP faults. Digital
thermal balancing allows proportional current imbalance
between phases.
The CHL8314 provides extensive OVP, UVP, OCP and OTP
fault protection. Device and fault configuration parameters
are easily defined using the CHiL Intuitive Power Designer
(IPD) 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.
The CHiL CHL8314 truly simplifies VRD design and enables
fastest time-to-market with its “set-and-forget” methodology.
APPLICATIONS
Intel® VR11.x CPU VRD and VRM; DDR Memory
High Performance Desktops, Servers and Graphics
Cards
Over-clocking and High-Efficiency Applicatio
Trademarks and registered trademarks are the property of the respective
owners.
PB0004 Rev. 0.30, October 7, 2008
Page 1
One Highwood Drive, Tewksbury, MA 01876
Tel: +1(978)-640-0011
www.chilsemi.com
© 2008 CHiL Semiconductor Inc. All rights reserved

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