Datasheet
1
FEATURES
APPLICATIONS
DESCRIPTION/ORDERING INFORMATION
TPS54310-EP
www.ti.com
..................................................................................................................................................................................................... SLVS818 – APRIL 2008
3-V TO 6-V INPUT, 3-A OUTPUT, SYNCHRONOUS BUCK PWM
SWITCHER WITH INTEGRATED FETs (SWIFT™)
2
• Controlled Baseline • Adjustable Output Voltage Down to 0.9 V With
1% Accuracy
– One Assembly Site
• Externally Compensated for Design Flexibility
– One Test Site
• Fast Transient Response
– One Fabrication Site
• Wide PWM Frequency: Fixed 350 kHz, 550
• Extended Temperature Performance of
kHz, or Adjustable 280 kHz to 700 kHz
– 55 ° C to 125 ° C
• Load Protected by Peak Current Limit and
• Enhanced Diminishing Manufacturing Sources
Thermal Shutdown
(DMS) Support
• Integrated Solution Reduces Board Area and
• Enhanced Product-Change Notification
Total Cost
• Qualification Pedigree
(1)
• 60-m Ω MOSFET Switches for High Efficiency
at 3-A Continuous Output Source or Sink
• Low-Voltage High-Density Systems With
Current
Power Distributed at 5 V or 3.3 V
(1) Component qualification in accordance with JEDEC and
• Point of Load Regulation for
industry standards to ensure reliable operation over an
High-Performance DSPs, FPGAs, ASICs, and
extended temperature range. This includes, but is not limited
to, Highly Accelerated Stress Test (HAST) or biased 85/85,
Microprocessors
temperature cycle, autoclave or unbiased HAST,
• Broadband, Networking, and Optical
electromigration, bond intermetallic life, and mold compound
Communications Infrastructure
life. Such qualification testing should not be viewed as
justifying use of this component beyond specified
• Portable Computing/Notebook PCs
performance and environmental limits.
As members of the SWIFT™ family of dc/dc regulators, the TPS54310 low input voltage high output current
synchronous buck PWM converter integrates all required active components. Included on the substrate with the
listed features are a true, high performance, voltage error amplifier that provides high performance under
transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 3 V; an
internally and externally set slow-start circuit to limit in-rush currents; and a power good output useful for
processor/logic reset, fault signaling, and supply sequencing.
The TPS54310 device is available in a thermally enhanced 20-pin TSSOP (PWP) PowerPAD™ package, which
eliminates bulky heatsinks. TI provides evaluation modules and the SWIFT designer software tool to aid in
quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.
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.
2 SWIFT, PowerPAD are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2008, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.