ISL6324AIRZ-TR5381

ISL6324AIRZ-TR5381 Datasheet

ISL6324A Hybrid SVI/PVI with I2C

Part	Datasheet
ISL6324AIRZ-TR5381	ISL6324AIRZ-TR5381 (pdf)

Related Parts	Information
ISL6324AIRZR5381	ISL6324AIRZR5381
ISL6324ACRZR5381	ISL6324ACRZR5381
ISL6324ACRZ-TR5381	ISL6324ACRZ-TR5381

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Data Sheet ISL6324A Hybrid SVI/PVI with I2C April 29, 2010 FN6880.1 Monolithic Dual PWM Hybrid Controller Powering AMD SVI Split-Plane and PVI Uniplane Processors The ISL6324A dual PWM controller delivers high efficiency and tight regulation from two synchronous buck DC/DC converters. The ISL6324A supports hybrid power control of AMD processors which operate from either a 6-bit parallel VID interface PVI or a serial VID interface SVI . The dual output ISL6324A features a multi-phase controller to support uniplane VDD core voltage and a single phase controller to power the Northbridge VDDNB in SVI mode. Only the multi-phase controller is active in PVI mode to support uniplane VDD only processors. A precision uniplane core voltage regulation system is provided by a 2-to-4-phase PWM voltage regulator VR controller. The integration of two power MOSFET drivers, adding flexibility in layout, reduce the number of external components in the multiphase section. A single phase PWM controller with integrated driver provides a second precision voltage regulation system for the North Bridge portion of the processor. This monolithic, dual controller with integrated driver solution provides a cost and space saving power management solution. For applications which benefit from load line programming to reduce bulk output capacitors, the ISL6324A features output voltage droop. The multi-phase portion also includes advanced control loop features for optimal transient response to load application and removal. One of these features is highly accurate, fully differential, continuous DCR current sensing for load line programming and channel current balance. Dual edge modulation is another unique feature, allowing for quicker initial response to high di/dt load transients. The ISL6324A supports Power Savings Mode by dropping phases when the PSI_L bit is set. The number of phases that the ISL6324A will drop to is programmable through an I2C interface. The number of PWM cycles between both dropping phases when entering Power Savings Mode and adding phases when exiting Power Savings Mode is also programmable through the I2C interface. The ISL6324A I2C interface also allows independent programmable output voltage offset for both the Core and North Bridge regulators. The I2C interface can also be used to set the PGOOD and OVP trip levels for both regulators as well. Processor Core Voltage Regulator Features • Configuration Flexibility - 1- or 2-Phase Operation with Internal Drivers - 3- or 4-Phase Operation with External PWM Drivers • Parallel VID 6-bit Interface Inputs for PVI Mode • PSI_L Support via Phase Shedding • Differential Remote Voltage Sensing • Optimal Processor Core Voltage Transient Response - Adaptive Phase Alignment APA - Active Pulse Positioning Modulation Processor Core Voltage Regulator and North Bridge Voltage Regulator Shared Features • Precision Voltage Regulation System Accuracy Over-Temperature • Two Wire, AMD Compliant Serial VID Interface Inputs for SVI Mode • I2C Interface - Voltage Margining, OVP and PGOOD Trip Levels - Enhanced PSI_L State Control • Fully Differential, Continuous DCR Current Sensing - Accurate Load Line Programming - Precision Channel Current Balancing for Core • Overcurrent Protection • Multi-tiered Overvoltage Protection • Variable Gate Drive Bias 5V to 12V • Simultaneous Digital Soft-Start of Both Outputs • Selectable Switching Frequency up to 1MHz • Pb-Free RoHS Compliant Ordering Information Note PART MARKING TEMP. RANGE PACKAGE PKG. Pb-free DWG. # ISL6324ACRZ* ISL6324A CRZ 0 to +70 48 Ld 7x7 QFN L48.7x7 ISL6324AIRZ* ISL6324A IRZ -40 to +85 48 Ld 7x7 QFN L48.7x7 *Add “-T” suffix for tape and reel. Please refer to TB347 for details on reel specifications. NOTE These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations . Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. CAUTION These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 \| Intersil and design is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2009, All Rights Reserved All other trademarks mentioned are the property of their respective owners. Pinout ISL6324A ISL6324A HYBRID SVI AND PVI 48 LD QFN TOP VIEW COMP_NB ISEN_NBISEN4+ ISEN4ISEN3+ ISEN3PVCC_NB LGATE_NB BOOT_NB UGATE_NB PHASE_NB VDDPWRGD 48 47 46 45 44 43 42 41 40 39 38 37 FB_NB 1 ISEN_NB+ 2 SDA 3 VID0/VFIXEN 4 VID1/SEL 5 VID2/SVD 6 VID3/SVC 7 VID4 8 VID5 9 VCC 10 FS 11 RGND 12 49 GND 36 PWM4 35 PWM3 34 PWROK 33 PHASE1 32 UGATE1 31 BOOT1 30 LGATE1 29 PVCCI_2 28 LGATE2 27 BOOT2 26 UGATE2 25 PHASE2 13 14 15 16 17 18 19 20 21 22 23 24 VSEN SCL RCOMP RSET FB COMP APA ISEN1+ ISEN1ISEN2+ ISEN2- Integrated Driver Block Diagram SOFT-START AND FAULT LOGIC GATE CONTROL LOGIC SHOOTTHROUGH PROTECTION PVCC BOOT UGATE 20kΩ 10kΩ PHASE LGATE FN6880.1 April 29, 2010

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Data Sheet

ISL6324A Hybrid SVI/PVI with I2C

April 29, 2010

FN6880.1

Monolithic Dual PWM Hybrid Controller Powering AMD SVI Split-Plane and PVI Uniplane Processors

The ISL6324A dual PWM controller delivers high efficiency and tight regulation from two synchronous buck DC/DC converters. The ISL6324A supports hybrid power control of AMD processors which operate from either a 6-bit parallel VID interface PVI or a serial VID interface SVI . The dual output ISL6324A features a multi-phase controller to support uniplane VDD core voltage and a single phase controller to power the Northbridge VDDNB in SVI mode. Only the multi-phase controller is active in PVI mode to support uniplane VDD only processors.

A precision uniplane core voltage regulation system is provided by a 2-to-4-phase PWM voltage regulator VR controller. The integration of two power MOSFET drivers, adding flexibility in layout, reduce the number of external components in the multiphase section. A single phase PWM controller with integrated driver provides a second precision voltage regulation system for the North Bridge portion of the processor. This monolithic, dual controller with integrated driver solution provides a cost and space saving power management solution.

For applications which benefit from load line programming to reduce bulk output capacitors, the ISL6324A features output voltage droop. The multi-phase portion also includes advanced control loop features for optimal transient response to load application and removal. One of these features is highly accurate, fully differential, continuous DCR current sensing for load line programming and channel current balance. Dual edge modulation is another unique feature, allowing for quicker initial response to high di/dt load transients.

The ISL6324A supports Power Savings Mode by dropping phases when the PSI_L bit is set. The number of phases that the ISL6324A will drop to is programmable through an I2C interface. The number of PWM cycles between both dropping phases when entering Power Savings Mode and adding phases when exiting Power Savings Mode is also programmable through the I2C interface.

The ISL6324A I2C interface also allows independent programmable output voltage offset for both the Core and North Bridge regulators. The I2C interface can also be used to set the PGOOD and OVP trip levels for both regulators as well.

Processor Core Voltage Regulator Features
• Configuration Flexibility - 1- or 2-Phase Operation with Internal Drivers - 3- or 4-Phase Operation with External PWM Drivers
• Parallel VID 6-bit Interface Inputs for PVI Mode
• PSI_L Support via Phase Shedding
• Differential Remote Voltage Sensing
• Optimal Processor Core Voltage Transient Response
- Adaptive Phase Alignment APA - Active Pulse Positioning Modulation Processor Core Voltage Regulator and North Bridge Voltage Regulator Shared Features
• Precision Voltage Regulation System Accuracy Over-Temperature
• Two Wire, AMD Compliant Serial VID Interface Inputs for SVI Mode
• I2C Interface - Voltage Margining, OVP and PGOOD Trip Levels - Enhanced PSI_L State Control
• Fully Differential, Continuous DCR Current Sensing - Accurate Load Line Programming - Precision Channel Current Balancing for Core
• Overcurrent Protection
• Multi-tiered Overvoltage Protection
• Variable Gate Drive Bias 5V to 12V
• Simultaneous Digital Soft-Start of Both Outputs
• Selectable Switching Frequency up to 1MHz
• Pb-Free RoHS Compliant
Ordering Information

Note

PART MARKING

TEMP. RANGE

PACKAGE PKG. Pb-free DWG. #

ISL6324ACRZ* ISL6324A CRZ 0 to +70 48 Ld 7x7 QFN L48.7x7

ISL6324AIRZ* ISL6324A IRZ -40 to +85 48 Ld 7x7 QFN L48.7x7
*Add “-T” suffix for tape and reel. Please refer to TB347 for details on reel specifications. NOTE These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations . Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

CAUTION These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil and design is a registered trademark of Intersil Americas Inc.

Copyright Intersil Americas Inc. 2009, All Rights Reserved

All other trademarks mentioned are the property of their respective owners.

Pinout

ISL6324A

ISL6324A HYBRID SVI AND PVI 48 LD QFN TOP VIEW

COMP_NB ISEN_NBISEN4+ ISEN4ISEN3+ ISEN3PVCC_NB LGATE_NB BOOT_NB UGATE_NB PHASE_NB VDDPWRGD
48 47 46 45 44 43 42 41 40 39 38 37

FB_NB 1 ISEN_NB+ 2

SDA 3 VID0/VFIXEN 4

VID1/SEL 5 VID2/SVD 6 VID3/SVC 7

VID4 8 VID5 9 VCC 10

FS 11 RGND 12
49 GND
36 PWM4 35 PWM3 34 PWROK 33 PHASE1 32 UGATE1 31 BOOT1 30 LGATE1 29 PVCCI_2 28 LGATE2 27 BOOT2 26 UGATE2 25 PHASE2
13 14 15 16 17 18 19 20 21 22 23 24

VSEN SCL

RCOMP RSET FB COMP APA

ISEN1+ ISEN1ISEN2+ ISEN2-

Integrated Driver Block Diagram

SOFT-START AND

FAULT LOGIC

GATE CONTROL

LOGIC

SHOOTTHROUGH PROTECTION

PVCC BOOT

UGATE 20kΩ
10kΩ

PHASE

LGATE

FN6880.1

April 29, 2010

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived ISL6324AIRZ-TR5381 Datasheet file may be downloaded here without warranties.

Datasheet ID: ISL6324AIRZ-TR5381 639180