TPS2459 Datasheet, PDF (1/44 Pages) Texas Instruments – 12-V/3.3-V Hot Swap and ORing Controller with I2C™ and Load Current Monitor for AdvancedMC™

TPS2459
www.ti.com ............................................................................................................................................................................................ SLUS917 – FEBRUARY 2009
12-V/3.3-V Hot Swap and ORing Controller with I²C™
and Load Current Monitor for AdvancedMC™
FEATURES
1
•23 ATCA AdvancedMC™ Compliant
• Full Power Control for an AdvancedMC™
Module
• Independently Programmable 12-V Current
Limit and Fast Trip
• 3.3-V and 12-V FET ORing Control for
MicroTCA™
• 12-V Output Shuts Off If 3.3-V Output Shuts
Off
• Internal 3.3-V Current Limit and ORing
• I²C™ Power Good and Fault Reporting
• I²C™ Programmable Fault Times and Limits
• FET Status Bits for 3.3-V and 12-V Channels
• Load Current Monitors for 12-V and 3.3-V
• 32-Pin QFN Package
APPLICATIONS
• ATCA Carrier Boards
• MicroTCA™Power Modules
• AdvancedMC™ Slots
• Systems Using 12-V and 3.3-V Channels
• Base Stations
DESCRIPTION
The TPS2459 hot-plug controller performs all
necessary power interface functions for an
AdvancedMC™ (Advanced Mezzanine Card). A fully
integrated 3.3-V channel provides inrush control,
over-current protection, and FET ORing. A 12-V
channel provides the same functions using external
FETs and sense resistors. The 3.3-V current limit is
factory set to AdvancedMC™ compliant levels while
the 12-V current limit is programmed using external
sense resistors. The accurate current sense
comparators of the TPS2459 satisfy the narrow
ATCA™ AdvancedMC™ current limit requirements.
12 V
V_IN
3.3 V
V
IN
{^Enable
{ ^{I2C Interface}
TYPICAL APPLICATION
0.005 W
422 W
15 14 13
16 IN3 ^{IN12 SENP SET}
12
11 6
8
SENM PASS BLK OUT12 OUT3 17
22 _VDD3
28 EN12
26 EN3
10 OREN
TPS2459
PG12 4
FLT12 7
PG3 20
FLT3 19
2 SDA
3 ^SCL
1 VINT
A0 A1 A2
30 18 25
GND
SUM12 5
SUM3 21
12 V
AdvancedMC^TM
3.3 V
Status Outputs
6810 W
3320 W
UDG-09031
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 PCI Industrial Computer Manufacturers Group.
2
I2C is a trademark of Phillips.
3
PRODUCT PREVIEW information concerns products in the
formative or design phase of development. Characteristic data and
other specifications are design goals. Texas Instruments reserves
the right to change or discontinue these products without notice.
Copyright © 2009, Texas Instruments Incorporated