
2-1
HIP1011
PCI Hot Plug Controller
The HIP1011 is the PCI Hot Plug voltage bus control IC for
use in modern computer systems that facilitates hot plugging
of adapter cards into and out of an active or passive back
plane. Along with discrete power MOSFETs and a few
passive components, the HIP1011 creates a small and simple
yet complete power control solution. Four independent
supplies are controlled, +5V, +3.3, +12V, and -12V. The +12V
and -12V switches are integrated. For the +5V and +3.3V
supplies, overcurrent protection is provided by sensing the
voltage across external current-sense resistors. For the +12V
and -12V supplies, overcurrent protection is provided
internally. In addition, an on-chip reference is used to monitor
the +5V, +3.3V and +12V outputs for undervoltage conditions.
The PWRON input controls the state of the switches. During
an overcurrent condition on any output, or an undervoltage
condition on the +5V, +3.3V or +12V outputs, all MOSFETs
are immediately latched-off and a LOW (0V) is asserted on
the FLTN output. The FLTN latch is cleared when the PWRON
input is toggled low again. During initial power-up of the main
V
CC
supply (+12V), the PWRON input is inhibited from
turning on the switches, and the latch is held in the Reset
state until the V
CC
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. Capacitors connected to
the gate pins set the turn-on rate. Also, a capacitor may be
added to the FLTN pin to provide noise immunity.
Features
Controls Distribution of Four Supplies: +5V, +3.3V, +12V,
and -12V
Internal MOSFET Switches for +12V and -12V Outputs
Microprocessor Interface for On/Off Control and Fault
Reporting
Adjustable Overcurrent Protection for All Supplies
Provides Fault Isolation
Adjustable Turn-On Slew Rate
Minimum Parts Count Solution
No Charge Pump
Applications
PCI Hot Plug
CompactPCI
Pinout
HIP1011
(SOIC)
TOP VIEW
Typical Application
Ordering Information
PART NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
HIP1011CB
0 to 70
16 Ld SOIC
M16.15
HIP1011CB-T
0 to 70
Tape and Reel
9
10
11
12
13
14
16
15
8
7
6
5
4
3
2
1
M12VIN
FLTN
3V5VG
V
CC
12VIN
3VISEN
OCSET
3VS
M12VO
12VG
GND
12VO
M12VG
5VISEN
5VS
PWRON
12V,
M12VIN
FLTN
3V5VG
V
CC
12VIN
3VISEN
3VS
OCSET
M12VO
M12VG
12VG
GND
12VO
5VISEN
5VS
PWRON
HIP1011
3.3V,
12V INPUT
5V,
-12V,
0.1A OUT
5V INPUT
-12V INPUT
POWER CONTROL INPUT
0.033
μ
F
0.033
μ
F
6.04k
FAULT OUTPUT (ACTIVE LOW)
(OPTIONAL)
5m
, 1%
0.033
μ
F
NOTE:
1. All capacitors are
±
10%.
1%
3.3V INPUT
5m
, 1%
7.6A OUT
0.5A OUT
5A OUT
HUF761315K8
Data Sheet
August 1999
File Number
4311.7
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
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Copyright
Intersil Corporation 1999