ISL6112 Datasheet, PDF (1/31 Pages) Intersil Corporation – Dual Slot PCI-Express Power Controller

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Data Sheet
September 28, 2007
ISL6112
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 would be set above the maximum
specified slot limits. The 3.3V supply can use a 15mΩ 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 R_SENSE
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)
PART MARKING
TEMP RANGE (°C)
PACKAGE
(Pb-Free)
PKG. DWG. #
ISL6112IRZA
ISL6112 IRZ
-40 to +85
48 Ld 7x7 QFN
L48.7x7
ISL6112IRZA-T*
ISL6112 IRZ
-40 to +85
48 Ld 7x7 QFN Tape and Reel
L48.7x7
ISL6112INZA
ISL6112 INZ
-40 to +85
48 Ld 7x7 TQFP
Q48.7x7
ISL6112INZA-T*
ISL6112 INZ
-40 to +85
48 Ld 7x7 TQFP Tape and Reel
Q48.7x7
ISL6112EVAL1Z
Evaluation Platform
*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.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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