TPS54110-Q1_15 Datasheet, PDF (1/27 Pages) Texas Instruments – 3-V TO 6-V INPUT, 1.5-A OUTPUT SYNCHRONOUS-BUCK PWM SWITCHER WITH INTEGRATED FETs (SWIFT)

Typical Size
(6,3 mm x 6,4 mm)
www.ti.com
TPS54110−Q1
SLVS837 − JULY 2008
3-V TO 6-V INPUT, 1.5-A OUTPUT SYNCHRONOUS-BUCK PWM
SWITCHER WITH INTEGRATED FETs (SWIFT)
FEATURES
D Qualified for Automotive Applications
D Integrated MOSFET Switches for High
Efficiency at 1.5-A Continuous Output Source
or Sink Current
D 0.9-V to 3.3-V Adjustable Output Voltage With
1% Accuracy
D Externally Compensated for Design Flexibility
D Fast Transient Response
D Wide PWM Frequency: Fixed 350 kHz,
550 kHz, or Adjustable 280 kHz to 700 kHz
D Load Protected by Peak Current Limit and
Thermal Shutdown
D Integrated Solution Reduces Board Area and
Total Cost
APPLICATIONS
D Low-Voltage, High-Density Systems With
Power Distributed at 5 V or 3.3 V
D Point of Load Regulation for High
Performance DSPs, FPGAs, ASICs, and
Microprocessors
D Broadband, Networking, and Optical
Communications Infrastructure
D Portable Computing/Notebook PCs
DESCRIPTION
As members of the SWIFT family of dc/dc regulators, the
TPS54110 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 TPS54110 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.
Input
10 mF
0.1 mF
Simplified Schematic
6.8 mH
VIN
PH
TPS54110
BOOT
0.047 mF
PGND
100 mF
Output
COMP
VBIAS
VSENSE
AGND
33 pF
19.1 kW
3.92 kW
2700 pF
3.92 kW
2.05 kW
2200 pF
Compensation
Network
100
95
90
85
80
75
70
65
60
55
50
0
EFFICIENCY
vs
OUTPUT CURRENT
0.25 0.5 0.75 1 1.25 1.5
I_O − Output Current − A
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.
PowerPAD and SWIFT are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright  2008, Texas Instruments Incorporated