CHL8228G-00CRT International Rectifier, CHL8228G-00CRT Datasheet

CHL8228G-00CRT

Manufacturer Part Number

CHL8228G-00CRT

Description

Dual loop, 6+2 multiphase PWM controller for graphics processor VR solutions with multiple input rail control

Manufacturer

International Rectifier

Datasheet

1.CHL8228G-00CRT.pdf (2 pages)

Specifications of CHL8228G-00CRT

Controller

GPU

Overclocking

Yes

Auto-psi/dpc

Yes

Vgd

Yes

Voltage Outputs (#)

Phases (#)

Typical Configuration

6 + 2 Multiphase

I2c

Yes

Smbus

Yes

Pmbus

Yes

Package

QFN 8 x 8

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

CHL8228G-00CRT

Manufacturer:

CHIL

Quantity:

9 440

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

CHL8228G-00CRT-IR

Manufacturer:

HONGFA

Quantity:

2 000

Current page: 1 of 2
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Trademarks and registered trademarks are the property of the respective

owners.

PB0008, Rev 1.0, June 11, 2010

FEATURES



DESCRIPTION

The CHL8225/8 are dual-loop digital multi-phase buck

controllers. The CHL8225 drives up to 5 phases and the

CHL8228 drives up to 8 phases. They feature Input Voltage

Management allowing up to 3 input voltages to be

monitored to ensure adequate power is delivered to the

load. Dynamic voltage control is provided by 4 registers

which are programmed through I2C/SMBus/PMBus and

then selected using a 2-bit parallel bus for fast access.

The CHL8225/8 NVM saves pins and enables a small

package size.

The CHL8225/8 includes the CHiL Efficiency Shaping

Technology to deliver exceptional efficiency at minimum

cost across the entire load range. CHiL Variable Gate Drive

optimizes the MOSFET gate drive voltage as a function of

real-time load current. CHiL Dynamic Phase Control adds

and drops phases based upon load current. The

CHL8225/8 can be configured to enter 1-phase operation

and active diode emulation mode based upon load current

or by command.

CHiL’s unique Adaptive Transient Algorithm (ATA), based

on proprietary non-linear digital PWM algorithms, minimizes

output bulk capacitors. In addition, a coupled inductor

mode, with phases added/dropped in pairs enables further

improvement in transient response and form factor.

The I2C/PMBus interface can communicate with up to 16

CHL8225/8 based VR loops. Device configuration and fault

5-phase & 8-phase dual output PWM Controller with

phases flexibly assigned between Loops 1 & 2

Dynamic voltage control by 2-bit parallel interface with

Gamer Mode override and Vmax setting

Input Voltage Management for up to 3 Input Voltages

Phase Switching frequency from 200kHz to 1.2MHz

CHiL Efficiency Shaping Features including Variable

Gate Drive, Dynamic Phase Control

Programmable 1-phase or 2-phase for Light Loads and

Active Diode Emulation for Very Light Loads

CHiL Adaptive Transient Algorithm (ATA) minimizes

output bulk capacitors and system cost

Designed for use with coupled inductors

Per-Loop Fault Protection: OVP, UVP, OCP, OTP

I2C/SMBus/PMBus system interface for telemetry of

Temperature, Voltage, Current & Power for both loops

Non-Volatile Memory (NVM) for custom configuration

Compatible with CHiL ATL and 3.3V tri-state Drivers

+3.3V supply voltage; 0ºC to 85ºC ambient operation

Pb-Free, RoHS, 6x6 40pin & 8x8 56pin QFN packages

CRITICAL

Monitor and Phase Current Capture Mode

DIGITAL MULTI-PHASE BUCK CONTROLLER

PRODUCT BRIEF

parameters are easily defined using the CHiL Intuitive

Power Designer (IPD) GUI and stored in on-chip NVM.

The CHL8225/8 provides extensive OVP, UVP, OCP and

OTP fault protection and includes thermistor based

temperature sensing with VRHOT signal.

The CHL8225/8 includes numerous features like register

diagnostics for fast design cycles and platform

differentiation, simplifying VRD design and enabling fastest

time-to-market with its “set-and-forget” methodology.

APPLICATIONS



VR_READY_L2

VR_READY

VRHOT2

VINSEN

VR_READY_L2

RCSM

EN_L2

ISEN8

Multiphase GPU systems

RCSP

VSEN

VRTN

RRES

TSEN

V18A

VCC

Figure 1: CHL8225 & CHL8228 Packages

VR_READY

RCSM

RCSP

VSEN

RRES

VRTN

TSEN

V18A

VCC

CHL8225/CHL8228

40 Pin 6x6 QFN

CHL8225

Top View

One Highwood Drive, Tewksbury, MA 01876

56 Pin 8x8 QFN

Top View

CHL8228

41 GND

Tel: +1(978) 640-0011

www.chilsemi.com

57 GND

RCSP_L2

RCSM_L2

VCC

VSEN_L2

VRTN_L2

PWM5

PWM4

PWM3

PWM2

PWM1

ISEN7

RCSP_L2

RCSM_L2

VCC

VSEN_L2

VRTN_L2

PWM8

PWM7

PWM6

PWM5

PWM4

PWM3

PWM2

PWM1

Related parts for CHL8228G-00CRT

CHL8228G-00CRT Summary of contents

Page 1

FEATURES  5-phase & 8-phase dual output PWM Controller with phases flexibly assigned between Loops 1 & 2  Dynamic voltage control by 2-bit parallel interface with Gamer Mode override and Vmax setting  Input Voltage Management for up to ...

Page 2

TYPICAL APPLICATIONS BLOCK DIAGRAM +12V Aux 1 R VIN_1 +12V Aux 2 R VIN_2 R VIN_1 R VIN_2 Notes 1 CHL8228 only ORDERING INFORMATION CHL822  -      T: Tape & Reel Package type R : ...

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