TPS2458 Datasheet, PDF (1/28 Pages) Texas Instruments – 12-V/3.3-V Hot Swap and ORing Controller with Load Current Monitor for AdvancedMC™

TPS2458
www.ti.com ............................................................................................................................................................................................ SLUS916 – FEBRUARY 2009
12-V/3.3-V Hot Swap and ORing Controller with Load Current Monitor for AdvancedMC™
FEATURES
1
•2 ATCA AdvancedMC™ Compliant
• Full Power Control for an AdvancedMC™
Module
• Programmable 12-V Current Limit and Fast
Trip
• Optional 12-V ORing Control for MicroTCA™
• Internal 3.3-V Current Limit
• Programmable Shunt Gain
• Interlock Requires 3.3-V Output Prior to 12 V
• 12-V and 3-V Power Good and Fault Outputs
• Load Current Monitor
• 32-Pin PQFN Package
APPLICATIONS
• ATCA Carrier Boards
• MicroTCA™Power Modules
• AdvancedMC™ Slots
• Systems Using 12 V and 3.3 V
• Base Stations
DESCRIPTION
The TPS2458 AdvancedMC™ slot controller is fully
compliant with the AdvancedMC™ Standard and
provides the required accuracy to meet the demands
of an AdvancedMC™ (Advanced Mezzanine Card)
module.
The TPS2458 is an extremely flexible solution that
protects both the power supply and the load by
limiting the maximum current into the load, shutting
off in case of a fault. If a severe fault occurs the
current shuts off immediately.
Optional ORing support is inherent in the architecture
and can be used in MicroTCA™, or other applications
requiring ORing support.
The 3.3-V management channel is internal and
requires only one external resistor for load monitoring
and one external capacitor to set fault time. To
comply with the AdvancedMC™ requirements, the
12-V output is disabled unless the 3.3-V Power Good
signal is asserted. Load current monitors are provided
for both the 12 V and 3.3 V channels. Status outputs
include Power Good and Fault indicators for each
channel. The TPS2458 is in a 32-pin PQFN package.
12 V
V_IN
3.3 V
V_IN
TYPICAL APPLICATION
0.005 W HAT2165 BSC057N03
422 W
15 14
16 IN12 SENP SET
28 EN12
26 EN3
11 OREN
13 12
SENM PASS
8
9
BLK OUT12
OUT3 18
PG12 4
FLT12 6
17 IN3
23 VDD3
7 CT12
19 CT3
TPS2458
PG3 21
FLT3 20
SUM12 5
1 VINT
24 AGND
GND GND
23
SUM3 22
GND GND GND GND GND
10 25 27 29 31
6810 W
3320 W
12 V
AdvancedMC^TM
3.3 V
Optional ORing components for redundant systems
UDG-09030
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
AdvancedMC, MicroTCA are trademarks of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009, Texas Instruments Incorporated