TPS75003 Datasheet, PDF (1/24 Pages) Texas Instruments – Triple-Supply Power Management IC for Powering FPGAs and DSPs

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TPS75003
SBVS052A – OCTOBER 2004 – REVISED DECEMBER 2004
Triple-Supply Power Management IC
for Powering FPGAs and DSPs
FEATURES
• Two Buck Controllers Providing up to 3A and
One 300mA LDO for Powering 3 Supplies
• Tested and Endorsed by Xilinx for Powering
the Spartan™-3 and Spartan-3L FPGAs
• Adjustable (1.2V to 6.5V for Bucks, 0.9V to
6.5V for LDO) Output Voltages on All
Channels
• Independent Soft-Start for Each Supply
• Independent Enable for Each Supply
• LDO Stable with Small 2.2µF Ceramic Output
Cap
• Input Voltage Range: 2.2V to 6.5V
• Small, Low-Profile 4.5mm x 3.5mm x 0.9mm
QFN Package
APPLICATIONS
• FPGA Supplies
• DSP/ASIC Supplies
• Split Supply Applications
DESCRIPTION
The TPS75003 is a complete power management
solution for FPGA, DSP and other multi-supply appli-
cations. The device has been tested with and meets
all of the Xilinx Spartan-3 and Spartan-3L start-up
profile requirements, including monotonic voltage
ramp and minimum voltage rail rise time. Independent
Enables for each output allow sequencing to minimize
demand on the power supply at start-up. Soft-start on
each supply limits inrush current during start-up. Two
integrated buck controllers allow efficient,
cost-effective voltage conversion for both low and
high current supplies such as core and I/O. A 300mA
LDO is integrated to provide an auxiliary rail such as
V_CCAUX on the Xilinx Spartan-3 FPGA. All three
supply voltages are offered in user-programmable
options for maximum flexibility.
The TPS75003 is fully specified from -40°C to +85°C
and is offered in a QFN package, yielding a highly
compact total solution size with high power dissi-
pation capability.
TPS75003
IN1
IS1
EN1
3A
SW1
SS1
BUCK1
FB1
IN3 20
OUT3 1
DGND
11 FB1
10 FB2
IN2
IS2
EN2
3A
SW2
SS2
BUCK2
FB2
IN3
OUT3
EN3
300mA
SS3
LDO
FB3
DGND
AGND
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.
Spartan is a trademark of Xilinx, Inc.
All other trademarks are the property of their respective owners.
PRODUCT PREVIEW information concerns products in the forma-
tive 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 © 2004, Texas Instruments Incorporated