ISL6112 Datasheet, PDF (2/31 Pages) Intersil Corporation – Dual Slot PCI-Express Power Controller

ISL6112
Functional Block Diagram (1 Channel)
ON AUXEN
POWER-ON
RESET
250µs
12VSENSE
12VIN
3VSENSE
3VIN
50mV
50mV
ON/OFF
12V
UVLO
VSTBY
VSTBY
UVLO
12VIN
VAUX CHARGE
PUMP AND
MOSFET
VAUX
OVERCURRENT ^3VIN
12V BIAS
12VGATE
VAUX
3VGATE
100mV*
100mV*
ON/OFF
VSTBY
IREF
CFILTER
1.25V
3V
UVLO
ON/
OFF
ON/OFF
THERMAL
SHUTDOWN
LOGIC CIRCUITS
VAUX
PWRGD
PWRGD
FAULT
12VPWRGD
10.5V
12VOUT
DIGITAL CORE/SERIAL INTERFACE
VSTBY
3VPWRGD
2.8V
3VOUT
INT
FORCE_ON
GPI
40kΩ x 3
GND
SCL SDA
A2 A1 A0
BOTH A AND B SLOTS SHARE THE SCL, SDA, A0, A1, A2, INT PINS.
2
FN6456.0
September 28, 2007