adm1014 Analog Devices, Inc., adm1014 Datasheet - Page 2

• Manufacturer Part Number: adm1014
• Description: Dual Pci Hot-plugtm Controller
• Manufacturer: Analog Devices, Inc.

ADM1014–SPECIFICATIONS
FEATURES
Controls Two PCI Slots
Controls all Four PCI Supplies, +3.3V, +5V, +12V,
-12V, plus 3.3V auxiliary supply
Internal MOSFET Switches for +3.3V AUX, +12V
and –12V outputs
Adjustable Overcurrent Protection for all Outputs
Undervoltage Protection on +3.3V, +5V, +12V and
+3.3V AUX Supplies
Open-Drain Fault Output with Adjustable Delay
Logic Control of Outputs
Adjustable Soft-start
APPLICATIONS
Compact PCI
PCI Hot-Plug
GENERAL DESCRIPTION
The ADM1014 is a dual PCI voltage bus controller that allows
hot-plugging of adapter cards into and out of an active or pas-
sive backplane. The device requires only four external power
MOSFETs and a few discrete components for a complete
power-control solution for two PCI slots.
(Specifications are for each channel, 3.3VAUX=AUXINA=3.3V, V
MOSFETs, T
Parameter
5V/ 3.3V SUPPLY CONTROL
+12V SUPPLY CONTROL
5V Overcurrent Threshold
5V Overcurrent Threshold Voltage
5V Overcurrent Threshold Voltage
5V Undervoltage Trip Threshold
5V Undervoltage Fault Response Time
5V Turn-On Time
(PWRON High to 5VOUT = 4.75V)
3V Overcurrent Threshold
3V Overcurrent Threshold Voltage
3V Overcurrent Threshold Voltage
3V Undervoltage Trip Threshold
3V Undervoltage Fault Response Time
3V5VG Undervoltage Enable Threshold
Voltage
3V Turn-On Time
(PWRON High to 3VOUT = 3.00V)
3V5VG Vout High
Gate Output Charge Current
Gate Turn-On Time
(PWRON High to 3V5VG = 11V)
Gate Turn-Off Time
On Resistance of Internal PMOS
On Resistance of Internal PMOS
Overcurrent Threshold
Overcurrent Threshold
12V Undervoltage Trip Threshold
Undervoltage Fault Response Time
A
= 0
o
TM
C to +70
o
C, unless otherwise noted.)
Min
-
33
70
-
-
-
4.42
-
41
89
2.74
-
-
11.5
19
-
-
-
-
0.6
1.25
10.25
-
Typ
8
42
80
4.65
110
9.75
10
52
98
2.86
110
9.6
9.75
11.8
25.0
280
2
0.3
0.35
0.75
1.50
10.6
110
CC
= 12VIN = +12V, -12VIN = -12V, Nominal 3.3V and 5V supplies to external
–2–
Max
-
50
90
-
-
62
-
-
-
29
-
-
-
4.7
160
108
2.9
160
0.35
0.5
0.9
1.8
10.8
The ADM1014 operates from a +12V and +3.3V AUX supply
and controls five independent supplies (+3.3V, +3.3VAUX,
+5V, +12V and –12V) on two separate channels (A and B).
The power switches for the +3.3VAUX, +12V and –12V
supplies are integrated onto the chip, and internal current
limiting is provided. For the +3.3V and +5V supplies, the
device drives external, N-channel, power MOSFETs, and
provides overcurrent protection by sensing the voltage drop
across external current-sense resistors.
The current limits for all 10 supplies are set by a single resistor
to GND, connected to the OCSET pin.
Undervoltage sensing is provided on the +3.3V, +5V, +12V
and +3.3VAux supplies. Overcurrent sensing is provided on all
supplies. In the event of an overcurrent or undervoltage fault on
any of the outputs of either channel, all outputs on that channel
will be turned off.
Turn-on slew rate may be controlled using eight external
capacitors, connected to the gate drives of all of the supplies.
Logic control of the four main outputs is provided by the
PWRONA and PWRONB pins. When these pins are high, the
outputs are turned on, when low, the outputs are turned off.
The +3.3VAUX supplies have their own control inputs,
PAUXA and PAUXB.
Units
V
A
mV
mV
V
ns
ms
A
mV
mV
V
ns
V
ms
µA
µs
µs
A
A
V
ns
Test Conditions/Comments
See Typical Application Diagram
V
V
C
R
See Typical Application Diagram
OCSET = 0.6V
OCSET = 1.2V
C
R
PWRON = High, FLTN = High
PWRON = High, V
C
C
PWRON = High, I
PWRON = High, I
V
V
OCSET
OCSET
L
L
3V5VG
OCSET
OCSET
3V5VG
3V5VG
3V5VG
= 1
= 0.43
= 0.033µF, 3V5VG Falling 90% to 10%
= 0.033µF, C
= 0.033µF, C
= 0.033µF,3V5VG Rising 10% to 90%
= 0.6V
= 1.2V
= 0.6V
= 1.2V
D
D
3V5VG
= 0.5A, T
= 0.5A, T
5VOUT
3VOUT
= 4V
= 2000µF,
= 2000µF,
A
A
= T
= T
REV. PrN 1/02
J
J
= 25
= 70
o
o
C
C