CHL8316CRT International Rectifier, CHL8316CRT Datasheet

CHL8316CRT

Manufacturer Part Number

CHL8316CRT

Description

6 phase VR11.1 multiphase PWM controller for high efficiency solutions

Manufacturer

International Rectifier

Datasheet

1.CHL8316CRT.pdf (2 pages)

Specifications of CHL8316CRT

Controller

CPU

Overclocking

Yes

Auto-psi/dpc

Yes

Vgd

Yes

Voltage Outputs (#)

Phases (#)

Typical Configuration

6 Multiphase

I2c

Smbus

Yes

Pmbus

Package

QFN 7 x 7

Current page: 1 of 2
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FEATURES

APPLICATIONS

BASIC APPLICATION

 Intel VR11.x compliant Digital PWM Controller

 Programmable 1-phase to 6-phase operation

 Customized Digital Over-Clocking features an

 IR Efficiency Shaping features a Variable Gate Drive

 1-phase to 2-phase PSI for Light Loads

 Adaptive Transient Algorithm minimizes capacitors

 Enables Thermal Phase Balancing

 SMBus Fault Indicators: OVP, UVP, OCP, OTP

 SMBus interface for configuring and monitoring;

 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

 RoHS Compliant, MSL level 1 package

 Intel® VR11.x CPU VRD and VRM; DDR Memory

 High Performance Desktops, Servers and

 Over-clocking and High-Efficiency Application

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

and Dynamic Phase Control

SMBus commands include monitoring input

current and power

operation

Graphics Cards

Figure 1: CHL8316 Basic Application Circuit

October 12, 2011 | FINAL | V1.02

CHL8316

Digital Multi-Phase Buck Controller

DESCRIPTION

The CHL8316 is a 6-phase digital synchronous buck

controller for core regulation of high-performance Intel®

VR11.1 and VR11.0 platforms. The CHL8316 is fully

compliant with VR11.1 including Power Status Indicator

(PSI) and for improved light load efficiency and accurate

current output (IMON).

The CHL8316 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” to extend VID up to 2.3V with

6.25 mV resolution.

The CHL8316 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.

CHL8316 supports NTC temperature sense to report

temperature and trigger VR HOT and OTP faults. Digital

thermal balancing allows proportional current imbalance

between phases.

The CHL8316 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 CHL8316 based

VRs. The controller includes a unique sensorless and

lossless input current monitoring capability.

PIN DIAGRAM

GAMER_OFF

SADDR/

VINSEN

RCSM

RCSP

VCPU

RRES

VRTN

IMON

TSEN

V18A

VCC

Figure 2: CHL8316 Package Top View

48 47 46 45

13 14

44 43

7mmx 7mm

TOP VIEW

CHL8316

48 Pin

GND

QFN

40 39 38 37

CHL8316

VCC

PWM6

PWM5

PWM4

PWM3

PWM2

PWM1

VCC

VAR_GATE

VR_HOT

VR_READY

Related parts for CHL8316CRT

CHL8316CRT Summary of contents

Page 1

FEATURES  Intel VR11.x compliant Digital PWM Controller  Programmable 1-phase to 6-phase operation  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 ...

Page 2

... CHL8316 5 48 Pin 6 7mmx 7mm 7 QFN TOP VIEW 8 9 GND Figure 3: CHL8316 Top View Enlarged CHL8316 Tape & Reel Qty Part Number 3000 CHL8316CRT 3000 CHL8316-XXCRT VCC 36 35 PWM6 34 PWM5 33 PWM4 PWM3 32 31 PWM2 PWM1 VCC VAR_GATE VR_HOT ...

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