TPS2458_16 Datasheet, PDF (1/29 Pages) Texas Instruments – 12-V/3.3-V Hot Swap and ORing Controller with Load Current Monitor for AdvancedMC

TPS2458
www.ti.com
SLUS916B – FEBRUARY 2009 – REVISED MAY 2010
12-V/3.3-V Hot Swap and ORing Controller with Load Current Monitor for AdvancedMC™
Check for Samples: TPS2458
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 and
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
3.3 V
TYPICAL APPLICATION
0.005 W
CSD16406Q3 x2
422 W
100 W
100 W
15 14
SENP SET
16 IN12
13 12
SENM PASS
8
9
BLK OUT12
OUT3 18
28 EN12
EN3
26
OREN
11
IN3
17
VDD3
23
CT12
7
CT3
19
VINT
1
TPS2458
PG12 4
FLT12 6
PG3 21
FLT3 20
SUM12 5
SUM3 22
24 AGND
GND GND
23
GND GND GND GND GND
10 25 27 29 31
1 mF
6810 W
3320 W
12 V
AdvancedMC^TM
3.3 V
Optional ORing components for redundant systems
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 © 2009–2010, Texas Instruments Incorporated