ISL6113 Datasheet, PDF (5/24 Pages) Intersil Corporation – Dual Slot PCI-E Hot Plug Controllers

ISL6113, ISL6114
Pin Descriptions (Continued)
PIN
NAME
FUNCTION
3, 34
12VGATEA,
12VGATEB
12VMAIN gate drive output, connects to gate of an external P-Channel MOSFET. During power-up, this pin is
pulled down with a 25µA (5µA for ISL6114) current to control the dv/dt ramp of the output voltage to the slot. During
CR, the voltage on this pin is modulated to maintain a constant current into the load. During power-down or
latch-off for an overcurrent fault, this pin is pulled high to 12VIN by internal sources.
14,
3VGATEA,
3VMAIN gate drive outputs connects to gate of an external N-Channel MOSFET. During power-up this pin charges
23
3VGATEB
up with a 25µA (5µA for ISL6114) current to control the dv/dt ramp of the output voltage to the slot load. During
CRTIM the voltage on this pin is modulated to maintain a constant current into the load. During power-down or
latch-off for an overcurrent fault this pin is pulled low by internal sources.
37, 18
PERSTA,
PERSTB
100ms delayed report of MAIN supplies output voltage compliance.
2, 35
CFILTERA,
CFILTERB
A capacitor connected between each of these pins and ground sets the current regulated duration (tFILTER) for
each slot. tFILTER is the amount of time for which a slot remains in current limit before its circuit breaker is tripped.
17, 33,
46
GND
IC ground reference
7,19, 20,
NC
No Connect
30
5
FN6457.0
September 25, 2007