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SMT4004

Description
Distributed Power Hot-Swap Controller
File Size484KB,23 Pages
ManufacturerETC
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SMT4004 Overview

Distributed Power Hot-Swap Controller

SUMMIT
MICROELECTRONICS, Inc.
Distributed Power Hot-Swap Controller
SMT4004
FEATURES
l
Programmable Voltage and Current Monitoring
l
Programmable Watchdog and Longdog Timers
w
Monitors 4 independent supplies
w
Programmable Host-side Under- and Over-
Voltage Thresholds
w
Programmable Card-side Under-Voltage
Monitors
w
Programmable Card-side Circuit Breaker
Delay and QuickTrip™ Threshold Levels
l
Programmable Card-side Trakker Function
(0 to 6.4 seconds)
l
Operates From Any One of Four Supply Voltages
l
Nonvolatile Fault Register
w
Records Source of Any Interrupt
w
Readable in “Dead Board” Environment
l
All Communications to Configuration Registers
and Memory Array are via 2-wire Serial Inter-
face
w
Programmable Slew Rate Control
w
Guarantees and Enforces Supply Differential
Tracking
FUNCTIONAL BLOCK DIAGRAM
PWR_ON FORCE_SD SEATED1# SEATED2#
33
UV_OVERRIDE 12
27
10
11
MR# IRQ_CLR#
5
6
7
IRQ#
13 RST1#
VO1 20
CB1 37
VI1 41
SUPPLY
MANAGER
#1
14 RST2#
RESET &
STATUS
OUTPUT
CONTROL
LOGIC
SEQUENCE
ENABLE
LOGIC
15 RST3#
16 RST4#
3
CROWBAR
25 CBFAULT
26 HEALTHY#
32 VGATE1
31 VGATE2
CHARGE
PUMP &
VGATE
CONTROL
30 VGATE3
29 VGATE4
28 VGG_CAP
24 ENABLE
VO2 21
CB2 36
VI2 40
SUPPLY
MANAGER
#2
VO3 22
CB3 35
VI3 39
SUPPLY
MANAGER
#3
VO4 23
CB4 34
VI4 38
SUPPLY
MANAGER
#4
TRAKKER
LOGIC
9
TRKR_IRQ#
48 WLDI
TIMER
LOGIC
POWER
SUPPLY
ARBITRATION
1
2
4
LDO#
WDO#
1.25VREF
43 A0
MEMORY
& 2-WIRE
BUS
INTERFACE
44 A1
45 A2
46 SDA
47 SCL
42
8
18
DGND
19
AGND
17
PGND
2049 BD 2.1
VDD_CAP PGND
©SUMMIT MICROELECTRONICS, Inc., 2000 • 300 Orchard City Dr., Suite 131 • Campbell, CA 95008 • Phone 408-378-6461 • FAX 408-378-6586 • www.summitmicro.com
Characteristics subject to change without notice
2049 2.2 9/13/00
1

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