ISL6323BCRZ-TR5381

ISL6323BCRZ-TR5381 Datasheet

ISL6323B

Part	Datasheet
ISL6323BCRZ-TR5381	ISL6323BCRZ-TR5381 (pdf)

Related Parts	Information
ISL6323BCRZR5381	ISL6323BCRZR5381
ISL6323BIRZR5381	ISL6323BIRZR5381
ISL6323BIRZ-TR5381	ISL6323BIRZ-TR5381

PDF Datasheet Preview
Data Sheet March 23, 2009 ISL6323B FN6879.0 Monolithic Dual PWM Hybrid Controller Powering AMD SVI Split-Plane and PVI Uniplane Processors The ISL6323B dual PWM controller delivers high efficiency and tight regulation from two synchronous buck DC/DC converters. The ISL6323B 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 ISL6323B 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 two-to-four-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 multi-phase 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 ISL6323B features output voltage droop. The multi-phase portion also includes advanced control loop features for optimal transient response to load apply 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 ISL6323B supports Power Savings Mode by dropping the number of phases to two when the PSI_L bit is set. Ordering Information PART NUMBER Note PART MARKING TEMP. RANGE PACKAGE PKG. Pb-free DWG. # ISL6323BCRZ* ISL6323B CRZ 0 to +70 48 Ld 7x7 QFN L48.7x7 ISL6323BIRZ* ISL6323B 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. • Processor Core Voltage Via Integrated Multi-Phase Power Conversion • Configuration Flexibility - 2-Phase Operation with Internal Drivers - 3- or 4-Phase Operation with External PWM Drivers • PSI_L Support with Phase Shedding for Improved Efficiency at Light Load • Serial VID Interface Inputs - Two Wire, Clock and Data, Bus - Conforms to AMD SVI Specifications • Parallel VID Interface Inputs - 6-bit VID input - 0.775V to 1.55V in 25mV Steps - 0.375V to 0.7625V in 12.5mV Steps • Precision Core Voltage Regulation - Differential Remote Voltage Sensing - System Accuracy Over-Temperature - Adjustable Reference-Voltage Offset • Optimal Processor Core Voltage Transient Response - Adaptive Phase Alignment APA - Active Pulse Positioning Modulation • Fully Differential, Continuous DCR Current Sensing - Accurate Load Line Programming - Precision Channel Current Balancing • Variable Gate Drive Bias 5V to 12V • Overcurrent Protection • Multi-tiered Overvoltage Protection • Selectable Switching Frequency up to 1MHz • Simultaneous Digital Soft-Start of Both Outputs • Processor NorthBridge Voltage Via Single Phase Power Conversion • Precision Voltage Regulation - Differential Remote Voltage Sensing - System Accuracy Over Temperature • Serial VID Interface Inputs - Two Wire, Clock and Data, Bus - Conforms to AMD SVI Specifications • Overcurrent Protection • Continuous DCR Current Sensing • Variable Gate Drive Bias 5V to 12V • Simultaneous Digital Soft-Start of Both Outputs • Selectable Switching Frequency up to 1MHz • Pb-Free RoHS Compliant 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. All Rights Reserved All other trademarks mentioned are the property of their respective owners. Pinout ISL6323B ISL6323B 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 36 PWM4

PDF Datasheet Preview

Data Sheet

March 23, 2009

ISL6323B

FN6879.0

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

The ISL6323B dual PWM controller delivers high efficiency and tight regulation from two synchronous buck DC/DC converters. The ISL6323B 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 ISL6323B 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 two-to-four-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 multi-phase 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 ISL6323B features output voltage droop. The multi-phase portion also includes advanced control loop features for optimal transient response to load apply 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 ISL6323B supports Power Savings Mode by dropping the number of phases to two when the PSI_L bit is set.
Ordering Information

PART NUMBER Note

PART MARKING

TEMP. RANGE

PACKAGE PKG. Pb-free DWG. #

ISL6323BCRZ* ISL6323B CRZ 0 to +70 48 Ld 7x7 QFN L48.7x7

ISL6323BIRZ* ISL6323B 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.
• Processor Core Voltage Via Integrated Multi-Phase Power Conversion
• Configuration Flexibility - 2-Phase Operation with Internal Drivers - 3- or 4-Phase Operation with External PWM Drivers
• PSI_L Support with Phase Shedding for Improved Efficiency at Light Load
• Serial VID Interface Inputs - Two Wire, Clock and Data, Bus - Conforms to AMD SVI Specifications
• Parallel VID Interface Inputs - 6-bit VID input - 0.775V to 1.55V in 25mV Steps - 0.375V to 0.7625V in 12.5mV Steps
• Precision Core Voltage Regulation - Differential Remote Voltage Sensing - System Accuracy Over-Temperature - Adjustable Reference-Voltage Offset
• Optimal Processor Core Voltage Transient Response - Adaptive Phase Alignment APA - Active Pulse Positioning Modulation
• Fully Differential, Continuous DCR Current Sensing - Accurate Load Line Programming - Precision Channel Current Balancing
• Variable Gate Drive Bias 5V to 12V
• Overcurrent Protection
• Multi-tiered Overvoltage Protection
• Selectable Switching Frequency up to 1MHz
• Simultaneous Digital Soft-Start of Both Outputs
• Processor NorthBridge Voltage Via Single Phase Power Conversion
• Precision Voltage Regulation - Differential Remote Voltage Sensing - System Accuracy Over Temperature
• Serial VID Interface Inputs - Two Wire, Clock and Data, Bus - Conforms to AMD SVI Specifications
• Overcurrent Protection
• Continuous DCR Current Sensing
• Variable Gate Drive Bias 5V to 12V
• Simultaneous Digital Soft-Start of Both Outputs
• Selectable Switching Frequency up to 1MHz
• Pb-Free RoHS Compliant

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. All Rights Reserved

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

Pinout

ISL6323B

ISL6323B 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
36 PWM4

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Datasheet ID: ISL6323BCRZ-TR5381 639179