hip1011b Intersil Corporation, hip1011b Datasheet - Page 3

• Manufacturer Part Number: hip1011b
• Description: Pci Hot Plug Controller
• Manufacturer: Intersil Corporation

Pin Descriptions
PIN
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
DESIGNATOR
PWRON
M12VIN
3VISEN
5VISEN
OCSET
M12VG
M12VO
3V5VG
12V
FLTN
12VO
12VG
GND
V
3VS
5VS
CC
IN
3.3V Current Sense
Power On Control
5V Current Sense
Overcurrent Set
Gate of Internal
Gate of Internal
12V V
Switched -12V
Switched 12V
3.3V/5V Gate
Fault Output
3.3V Source
FUNCTION
3
-12V Input
5V Source
12V Input
Ground
Output
Output
PMOS
NMOS
Output
CC
Input
-12V Supply Input. Also provides power to the -12V overcurrent circuitry.
5V CMOS Fault Output; LOW = FAULT. A capacitor may be placed from this pin to ground to
provide delay time to fault notification and power supply latch-off.
Drive the Gates of the 3.3V and 5V MOSFETs. Connect a capacitor to ground to set the start-
up ramp. During turn on, this capacitor is charged with a 25µA current source.
Connect to unswitched 12V supply.
Switched 12V supply input.
Connect to the load side of the current sense resistor in series with source of external 3.3V
MOSFET. This pin tied to GND when FET switch outputs disabled.
Connect to Source of 3.3V MOSFET. This connection along with pin 6 (3VISEN) senses the
voltage drop across the sense resistor.
Connect a resistor from this pin to ground to set the overcurrent trip point of all four switches. All
four over current trips can be programmed by changing the value of this resistor. The default
(6.04kΩ, 1%) is compatible with the maximum allowable currents as outlined in the PCI
specification.
Controls all Four Switches. High to Turn Switches ON, Low to turn them OFF.
Connect to Source of 5V MOSFET Switch. This connection along with pin 11 (5VISEN) senses
the voltage drop across the sense resistor.
Connect to the load side of the current sense resistor in series with source of external 5V MOSFET.
This pin tied to GND when FET switch outputs disabled.
Switched 12V output. This pin tied to GND when FET switch outputs disabled.
Connect to common of power supplies.
Connect a capacitor between 12VG and 12VO to set the start up ramp for the +12V supply.
This capacitor is charged with a 25µA current source during start-up.
Connect a capacitor between M12VG and M12VO to set the start-up ramp for the M12V supply.
This capacitor is charged with 25µA during start-up.
Switched 12V Output. This pin tied to GND when FET switch outputs disabled.
HIP1011B
DESCRIPTION
November 18, 2004
FN4640.5