HIP1011D Datasheet, PDF (1/15 Pages) Intersil Corporation – Dual PCI Hot Plug Controller

Data Sheet
HIP1011D
November 1999 File Number 4725.1
Dual PCI Hot Plug Controller
The HIP1011D is the first IC available for independent
control of two PCI Hot Plug slots. The HIP1011D has all the
features and functionality of two single PCI Hot Plug slot
controllers such as the HIP1011A but in the same foot print
area.
The HIP1011D is designed to be physically placed in close
proximity to two adjacent PCI slots servicing each
independently but reducing layout complexity and placement
costs in assembly. It creates two independent power control
solutions with discrete power MOSFETs and a few passive
components. The four supplies +5V, +3.3V, +12V, and -12V
for each slot are independently controlled. There are four
integrated current sensing switches for the +12V and -12V
and for the +5V and +3.3V supplies overcurrent protection is
provided by sensing the voltage across external current-
sense resistors. In addition, on-chip references are used to
monitor the +5V, +3.3V and +12V outputs for undervoltage
conditions. The two PWRON inputs control the state of the
switches, one each for slot A and slot B outputs. During an
overcurrent condition on any output, or an undervoltage
condition on the +5V, +3.3V or +12V outputs, a LOW (0V) is
asserted on the associated FLTN output and all associated
switches are latched-off. The outputs servicing the adjacent
slot are unaffected.
The time to FLTN signal going LOW and MOSFET latch off
is user determined by a single capacitor from each FLTN pin
to ground. This added feature enables the HIP1011D to
ignore system noise transients. The FLTN latch is cleared
when the PWRON input is toggled low again. During initial
power-up of the main VCC supply (+12V), the PWRON input
is inhibited from turning on the switches, and the latch is held
in the Reset state until the VCC input is greater than 10V.
User programmability of the overcurrent threshold and turn-
on slew rate is provided. A resistor connected to the OCSET
pin programs the overcurrent threshold for both slots.
Capacitors connected to the gate pins set the turn-on rate.
Features
• Independent Power Control of 2 PCI Slots
• Turn-Off Delay Time Adjustability
• Internal MOSFET Switches for +12V and -12V Outputs
• µP Interface for On/Off Control and Fault Reporting
• Adjustable Overcurrent Protection for All Eight Supplies
• Provides Fault Isolation
• Adjustable Turn-On Slew Rate
• Minimum Parts Count Solution
• No Charge Pump
• 100ns Response Time to Over Current
Applications
• PCI Hot-Plug
Ordering Information
TEMP. RANGE
PART NUMBER
(^oC)
PACKAGE
HIP1011DCA
0 to 70 28 Ld SSOP
HIP1011DCA-T
0 to 70 Tape and Reel
PKG.
NO.
M28.15
Pinout
HIP1011D
(SSOP)
TOP VIEW
M12VO_2 1
M12VG_2 2
PWRON_2 3
FLTN_2 4
VSS 5
12VG_2 6
12VO_2 7
12VO_1 8
12VG_1 9
OCSET 10
FLTN_1 11
PWRON_1 12
M12VG_1 13
M12VO_1 14
28 M12VIN_2
27 3VISEN_2
26 3VS_2
25 5VISEN_2
24 5VS_2
23 3V5VG_2
22 12VIN_2
21 12VIN_1
20 3V5VG_1
19 5VS_1
18 5VISEN_1
17 3VS_1
16 3VISEN_1
15 M12VIN_1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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