ISL6112| Datasheet

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ISL6112
Data Sheet September 28, 2007 FN6456.0

Dual Slot PCI-Express Power Controller
The ISL6112 targets the PCI-Express add-in card hot plug application. Together with two each of N-Channel and P-Channel MOSFETs, four current sense resistors and several external passive components the ISL6112 provides a compliant hot plug power control solution to any combination of two PCI-Express X1, X4, X8 or X16 slots. The ISL6112 features the ability to program a maximum current regulated level for each of the MAIN outputs for a common programmable duration so that both fault isolation protection and imperviousness to electrical transients (OC and soft-start protection) are provided to each system supply. For each 12VMAIN supply, the current regulated (CR) level is set by a resistor value dependant on the size of the PCI-Express connector (X1, X4/X8 or X16) to be powered. This resistor is a sub ohm standard value current sense resistor one each for each of the 3VMAIN and 12VMAIN supplies. The voltage across this resistor is compared to a 50mV reference providing a nominal CR protection level which woul
d be set above the maximum specified slot limits. The 3.3V supply can use a 15m sense resistor compared to a 50mV reference to provide a nominal regulated current limit of 3.3A to all connector sizes. A shutdown without a CR duration delay is invoked if RSENSE voltage is >100mV. The VAUX is internally monitored and controlled to provide nominal limiting to 1A of load current. The ISL6112 is System Management Interface (SMI) capable with an integrated SMBus link for communication, control, monitoring and reporting of IC and slot conditions. Information such as UV, OC, STATUS, power level etc. are available. Additionally the IC has a minimum of I/O for implementations where Hot-Plug Hardware Interface (HPI) is implemented.

Features
Supports Two Independent PCI Express Slots Highest Available Accuracy External RSENSE Current Monitoring on Main Supplies Programmable Current Regulation Protection Function for X1, X4, X8, X16 Connectors 12V, 3.3V, and 3.3VAUX Supplies Supported per PCI Express Specification V1.0A Voltage Tolerant I/O SMBus Interface for Slot Power Control and Status, compatible with SMBus 2.0 Systems Programmable Current Regulation Duration Programmable In-rush Current Limiting Dual Level Fault Detection for Quick Fault Response without Nuisance Tripping Slot to Slot Electrical and Thermal Isolation Two General Purpose Input Pins Suitable for Interface to Logic and Switches. TQFP or QFN Pb-Free Package Options - TQFP is pin for pin equivalent to MIC2592B-2YTQ and is compatible with the TPS2363 pinout - The QFN package is 40% smaller and has lower die to case thermal impedance than the TQFP Pb-Free (RoHS Compliant)

Applications
PCI Express V1.0A hot-plug power control PCI-Express Servers Power Supply Distribution and Control

Ordering Information
PART NUMBER (Note) ISL6112IRZA ISL6112IRZA-T* ISL6112INZA ISL6112INZA-T* ISL6112EVAL1Z PART MARKING ISL6112 IRZ ISL6112 IRZ ISL6112 INZ ISL6112 INZ Evaluation Platform TEMP RANGE ( C) -40 to +85 -40 to +85 -40 to +85 -40 to +85 48 Ld 7x7 QFN 48 Ld 7x7 QFN Tape and Reel 48 Ld 7x7 TQFP 48 Ld 7x7 TQFP Tape and Reel PACKAGE (Pb-Free) PKG. DWG. # L48.7x7 L48.7x7 Q48.7x7 Q48.7x7

*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. 2007. All Rights Reserved All other trademarks mentioned are the property of their respective owners.