ISL6111CRZA-T Intersil, ISL6111CRZA-T Datasheet

IC CTRLR HOT PLUG SWITCH 20-QFN

ISL6111CRZA-T

Manufacturer Part Number
ISL6111CRZA-T
Description
IC CTRLR HOT PLUG SWITCH 20-QFN
Manufacturer
Intersil
Type
Hot-Swap Controllerr
Datasheet

Specifications of ISL6111CRZA-T

Applications
PCI, PCI-X
Internal Switch(s)
Yes
Voltage - Supply
3.3V, 5V, 12V
Operating Temperature
0°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current Regulated PCI Hot Plug Power
Switch Controller
The ISL6111 is designed for use in PCI and PCI-X
applications where active current regulation protection of the
motherboard from an abnormal PCI load card is desired.
With the addition of two discrete power MOSFETs and a few
passive components, the ISL6111 provides power control for
the four legacy supplies (-12V, +12V, +5V, +3.3V) to a PCI or
PCI-X slot. This IC integrates the +12V and -12V current
sensing and regulation switches. On the 25W capable 3.3V
and 5V rails, current regulation (CR) protection is provided
by sensing the voltage across external current-sense
resistors and modulation of the gate voltage bias on the
external N-channel power MOSFETs.
During initial power-up of the +12V bias supply, the ENABLE
(EN), Power Good (PG), fault monitoring and reporting
function functions are inhibited if bias voltage <10V. Once
the FETs are enabled they are soft started into the load thus
eliminating supply rail disturbances.
Upon a failure that quickly causes a load current greater
than the programmed CR level on any voltage supply, the
ISL6111 enters its current regulation (CR) mode, limiting the
load current to the user programmed level for the user
determined period of time. The CR level and duration are set
by a single resistor and capacitor respectively. At the end of
the CR duration all the switches will latch off pulling the
outputs low along with the CRTIM (current regulation timer)
and FLTN (fault not) pins indicating a latch-off due to an over
current (OC) condition. If a severe OC condition should
occur, then the ISL6111 immediately latches off all outputs
and sets the FLTN output low.
During operation, if any of the positive voltages falls below
the minimum PCI specified levels the power good (PG)
output will pull low indicating a non compliant voltage to a
load. PG is an open drain output as is FLTN.
The CRSET pin allows programming of the current
regulation levels to be scaled up or down from the PCI
specified levels via a resistor connected between the
CRSET pin and ground.
All faults and latches are cleared by ENABLE being
deasserted low.
®
1
Data Sheet
1-888-INTERSIL or 321-724-7143
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• Active Current Regulation for Protection
• Adjustable Current Regulation Duration and Magnitude
• Internal MOSFET Switches for +12V and -12V Outputs
• Provides Fault Isolation
• Adjustable Turn-On Slew Rate
• Minimum Parts Count Solution
• No Charge Pump
• 1µs Response Time to Over Current
• Pb-Free leadframe
Applications
• PCI
• PCI-X 1.0
Ordering Information
NOTE: Intersil Lead-Free products employ special lead-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which is compatible with both SnPb
and lead-free soldering operations. Intersil Lead-Free products are
MSL classified at lead-free peak reflow temperatures that meet or
exceed the lead-free requirements of IPC/JEDEC J Std-020B.
Pinout
ISL6111CRZA
(see Note)
ISL6111EVAL2
PART NUMBER
All other trademarks mentioned are the property of their respective owners.
PGOOD
GND_B
12VI_A
12VI_B
|
March 2004
3VG
Intersil (and design) is a registered trademark of Intersil Americas Inc.
1
2
3
4
5
Copyright © Intersil Americas Inc. 2004. All Rights Reserved
Evaluation Platform
TEMP. RANGE
ISL6111 (5x5 QFN)
20
6
0 to 75
(°C)
19
TOP VIEW
7
-12V
18
8
17
9
20 Ld 5x5 QFN
(Pb-Free)
PACKAGE
16
10
15
14
13
12
11
ISL6111
M12VG
GND_A
12VO_B
12VO_A
5VG
FN9146.1
L20.5x5
DWG. #
PKG.

Related parts for ISL6111CRZA-T

ISL6111CRZA-T Summary of contents

Page 1

... Applications • PCI • PCI-X 1.0 Ordering Information TEMP. RANGE PART NUMBER (°C) ISL6111CRZA (see Note) ISL6111EVAL2 Evaluation Platform NOTE: Intersil Lead-Free products employ special lead-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which is compatible with both SnPb and lead-free soldering operations ...

Page 2

Typical Application (Note 1) 3.3V SUPPLY ENABLE INPUT -12V SUPPLY 12V SUPPLY NOTES: 1. See Table 1 for CR level formula 2. See Table 2 for CR duration TIM 2 ISL6111 (Note 1) (Note 1) (Note 1) ...

Page 3

Simplified Schematic COMP - 12V IN + 20µA CRTIM 12V IN 12V IN 12V IN 5V REF 5V ZENER REFERENCE 12V IN LOW WHEN 12V 12V IN POWER-ON RESET 12V IN 100µA V OCSET CRSET 12V IN ENABLE GND 3 ...

Page 4

Pin Descriptions PIN NO. DESIGNATOR FUNCTION 1 3VG 3.3V FET Gate Output Drives the gate of the 3.3V MOSFET. Connect to the gate of the external N-Channel 2, 4 12VI 12V Input 3, 14 GND IC Ground Reference 5 PGOOD ...

Page 5

Absolute Maximum Ratings 12VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 6

Electrical Specifications Nominal 5.0V and 3.3V Input Supply Voltages, 12VI = 12V, M12VI = -12V, T PARAMETER Current Trip Level Temp Coeff. 3.3V Undervoltage Threshold 3.3V Turn-On Time (EN to 3VOUT = 3V) 3.3V Turn-Off Time (EN to 3VOUT = ...

Page 7

Electrical Specifications Nominal 5.0V and 3.3V Input Supply Voltages, 12VI = 12V, M12VI = -12V, T PARAMETER Slow Ramping Current Trip Level Current Trip Level Temp Coeff. Gate Turn-Off Time Gate Response Time To Overcurrent Gate Response Time to WOC ...

Page 8

Introduction The ISL6111 device designed to provide control and protection of the four legacy PCI power supplies (+12V, -12V, +5V and +3.3V) for a single PCI or PCI-X slot. Unlike the widely used HIP1011, this device employs ...

Page 9

... R flexibility of programming is quite limited. For applications where more power is required on the +12V supply, contact your local Intersil sales representative for information on other Hot Plug solutions not try to sense voltages across the external sense resistors that are less than 20mV as spurious faults due to noise and comparator input sensitivity may result ...

Page 10

PCB traces. CORRECT INCORRECT TO ISL6111 TO ISL6111 VS AND VISEN VS AND VISEN CURRENT SENSE RESISTOR FIGURE 2. SENSE RESISTOR PCB LAYOUT PGOOD vs Power is Good and ...

Page 11

Typical Performance Curves & Waveforms 13 11 12V 9 3.3V 7 -12V 5V 5 3.0K 3.5K 4.0K FIGURE 6. NOMINAL CURRENT TRIP LEVEL vs RCRSET 10.75 10.732 10.716 10. TEMPERATURE (°C) FIGURE 8. 12V UV Vth vs ...

Page 12

Typical Performance Curves & Waveforms 101 100 TEMPERATURE (°C) FIGURE 12. CRSET CURRENT vs TEMPERATURE Using the ISL6111EVAL2 Platform Biasing and General Information The ISL6111EVAL2 platform (Figure 20) allows a designer to evaluate and ...

Page 13

Typical Performance Curves EN 10V/DIV CTIM 1V/DIV 4ms/DIV FIGURE 14. ISL6111 TURN-ON INTO NOMINAL LOAD M12IOUT 0.1A/DIV CR = 0.12A TIM 5V/DIV 10ms/DIV FIGURE 16. M12VOUT INTO CR (VCRSET = 0.461V) 3.3IOUT 5A/DIV CR = 10.2A 3VG 2V/DIV 3VSUPPLY 1/DIV ...

Page 14

ISL6111 FIGURE 20. ISL6111EVAL2 PLATFORM SCHEMATIC AND PHOTOGRAPH 14 ...

Page 15

... Load Capacitor 15 ISL6111 TABLE 3. ISL6111EVAL2 BOARD COMPONENT LISTING Intersil, ISL6111CR PCI HotPlug Controller 4.5mΩ, 30V, 23A Logic Level N-Channel MOSFET or Equivalent WSL-2512 5mΩ, 1% Metal Strip Resistor or Equivalent 4.53kΩ 0805 Chip Resistor 0.47µF 0805 Chip Capacitor (CR duration ~70ms) 5kΩ ...

Page 16

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

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