CHL8266CRT International Rectifier, CHL8266CRT Datasheet

CHL8266CRT

Manufacturer Part Number

CHL8266CRT

Description

6 phase multiphase PWM controller for high efficiency graphics processor VR solutions

Manufacturer

International Rectifier

Datasheet

1.CHL8266CRT.pdf (2 pages)

Specifications of CHL8266CRT

Controller

GPU

Overclocking

Yes

Auto-psi/dpc

Yes

Vgd

Voltage Outputs (#)

Phases (#)

Typical Configuration

6 Multiphase

I2c

Smbus

Yes

Pmbus

Package

QFN 7 x 7

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

CHL8266CRT

Manufacturer:

CHIL

Quantity:

20 000

Current page: 1 of 2
Download datasheet (268Kb)

FEATURES

APPLICATIONS

BASIC APPLICATION

 GPU-compliant Digital PWM Controller

 Programmable 1-phase to 6-phase operation

 Configurable switching frequency from 200 kHz to

 IR Dynamic Phase Control

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

 Adaptive Transient Algorithm minimizes output

 Enables Thermal Phase Balancing

 SMBus interface for configuring and monitoring

 Compatible with IR ATL Drivers and

 Nine bytes of NVM storage available for

 +3.3V supply voltage; 0ºC to 85ºC Ambient

 RoHS Compliant, MSL level 1 package

 High performance GPU Voltage

 High Current and High-Efficiency Applications

VR_HOT#

VR_RDY

ENABLE

SV_DIO

1MHz per phase with accuracy better than 2%

bulk capacitors

Tri-state Drivers

customer use

operation

Regulation solutions

SV_CLK

3.3V

Figure 1: CHL8266 Basic Application Circuit

October 12, 2011 | FINAL | V1.05

VR_RDY

VR_HOT#

SDA

VCC

SCL

ENABLE

CHL8266

PWM1_L2

IRTN1_L2

ISEN1_L2

PWM1

PWM2

PWM4

ISEN1

IRTN1

IRTN2

IRTN4

ISEN2

ISEN4

Stage 6

Stage 2

Stage 1

Stage 5

Power

. .

Digital Multi-Phase GPU Buck Controller

V_GPU

12V

DESCRIPTION

The CHL8266 is a 6-phase digital synchronous buck

controller for regulation of high-performance GPU

platforms. The CHL8266 output VID table is fully compliant

with VR11.1 specifications.

The CHL8266 deploys a number of efficiency shaping

features. PSI can be programmed to be up to four phases

for optimum light-load efficiency, and the controller can

autonomously add/drop phases from mid to high and back

to mid current ranges to deliver 90+% efficiency across the

entire load range.

IR’s unique Adaptive Transient Algorithm, based on non-

linear digital PWM algorithms, minimizes output bulk

capacitors.

CHL8266 supports NTC temperature sense to report

temperature and trigger VR HOT and OTP faults. Digital

thermal balancing allows proportional current imbalance

between phases.

The CHL8266 provides extensive OVP, UVP, OCP and OTP

fault protection. Device and fault configuration parameters

are easily defined using the IR Digital Power Design Center

(DPDC) GUI and stored in on-chip non-volatile memory

(NVM).

The 2-pin SMBus interface can be used to monitor a variety

of operating parameters on CHL8266 based VRs.

The CHL8266 truly simplifies VRD design and enables

fastest time-to-market with its “set-and-forget”

methodology.

PIN DIAGRAM

VINSEN

SADDR

RCSM

VGPU

RCSP

VRTN

RRES

TSEN

V18A

VCC

TP2

Figure 2: CHL8266 Package Top View

48 47 46 45

13 14

44 43

7mmx 7mm

TOP VIEW

CHL8266

48 Pin

GND

QFN

40 39 38 37

CHL8266

VCC

PWM6

PWM5

PWM4

PWM3

PWM2

PWM1

VCC

VR_HOT

VR_READY

Related parts for CHL8266CRT

CHL8266CRT Summary of contents

Page 1

FEATURES  GPU-compliant Digital PWM Controller  Programmable 1-phase to 6-phase operation  Configurable switching frequency from 200 kHz to 1MHz per phase with accuracy better than 2%  IR Dynamic Phase Control  1-phase to 2-phase PSI for Light ...

Page 2

ORDERING INFORMATION -   CHL8266 T – Tape and Reel R – Package Type (DFN) C – Operating Temperature (Commercial Standard) XX – Configuration File ID RCSP RCSM VCC VGPU VRTN SADDR TP2 RRES VINSEN TSEN EN V18A October ...

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