TPS2345 Datasheet, PDF (1/30 Pages) Texas Instruments – CompactPCI® HOT SWAP POWER MANAGER

TPS2345
SLUS503B – MARCH 2002 – REVISED AUGUST 2002
CompactPCI^R HOT SWAP
POWER MANAGER
FEATURES
D Enables Hot Swap in CompactPCI^R High
Availability Systems
D Programmable Current Slew Rate
D Power Supply Sequencing
D Sense Resistors Set Peak Current (IMAX)
D Overcurrent Circuit Breaker at 2× IMAX
D Precharge Output
D HEALTHY# Signal of Board Power Good
D BD_SEL# Signal for Peripheral Enable
D On-Chip Charge Pump
D Low Sleep Mode Current
D Undervoltage Lockout (UVLO)
D Minimal External Parts Count
D 24-pin TSSOP Package
DESCRIPTION
The TPS2345 CompactPCI^R Hot Swap Power
Manager (HSPM) provides highly-integrated
supply control of three positive (3.3-V, 5-V, and
12-V) and one negative (–12-V) supply rails with
a minimum number of external components. A
linear current amplifier (LCA) in each of the four
device channels provides closed-loop control of
load current during insertion and extraction
events. This allows the designer to configure the
plug-in card’s maximum inrush slew rate and
magnitude according to the requirements of the
CompactPCI^R Hot Swap Specification
PICMG 2.1.
TYPICAL APPLICATION
12V
5V
BD_SEL#
HEALTHY#
GND
R1
Q1
0.025 Ω
EARLY
VIO
D1
MAZ3140
C1
C2
0.1 µF 0.1 µF _R6
10 kΩ
R7
1.2 kΩ
CS1 GATE1 VS1
VIN1
BD_SEL#
VIN2
HEALTHY#
RGND
TPS2345
C3
0.1 µF
C5
0.33 µF
D2
IRAMP
PRECHG
VIN4
CS4 GATE4 VS4
VIN3
CompactPCI^R PLUG-IN MODULE
R2
Q2
3 mΩ
CS2
GATE2
VS2
CPUMP
AGND
CPGND
VS3
CS3 ^GATE3
C6
0.1 µF
12 V
5V
3.3 V
–12 V
AD[00]
AD[XX:01]
C4
0.1 µF
MAZ3140
R4
0.25 Ω
Q4
R5
10 kΩ
R8
10 Ω
RP
EXAMPLE SIGNAL LINE
CompactPCI^R Bus
R3
2.5 mΩ
PCI DEVICE
AD[00]
AD[XX:01]
3.3 V
Q3
UDG–01128
–12 V
PICMGR, CompactPCIR, and the PICMGR and CompactPCIR logos are registered trademarks of the PCI Industrial Computer Manufacturers Group.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright  2002, Texas Instruments Incorporated
www.ti.com
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