TPS54611, TPS54612, TPS54613
TPS54614, TPS54615, TPS54616
SLVS400A– AUGUST 2001 – REVISED JANUARY 2002
3-V TO 6-V INPUT 6-A OUTPUT SYNCHRONOUS BUCK PWM
SWITCHER WITH INTEGRATED FETs (SWIFT
)
Typical Size
6,6 mm X 9,8 mm
1
www.ti.com
FEATURES
30-m
, 12-A Peak MOSFET Switches for High
Efficiency at 6-A Continuous Output Source
and Sink
0.9-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V and 3.3-V Fixed
Output Voltage Devices With 1.0% Initial
Accuracy
Internally Compensated for Easy Use and
Minimal Component Count
Fast Transient Response
Wide PWM Frequency – Fixed 350 kHz,
550 kHz or Adjustable 280 kHz to 700 kHz
Load Protected by Peak Current Limit and
Thermal Shutdown
Integrated Solution Reduces Board Area and
Total Cost
APPLICATIONS
Low-Voltage, High-Density Systems With
Power Distributed at 5 V or 3.3 V
Point of Load Regulation for High
Performance DSPs, FPGAs, ASICs and
Microprocessors
Broadband, Networking and Optical
Communications Infrastructure
Portable Computing/Notebook PCs
VIN
PH
BOOT
PGND
VSENSE
Output
AGND
VBIAS
Input
TPS54614
SIMPLIFIED SCHEMATIC
DESCRIPTION
The SWIFT
family of dc/dc regulators, the TPS54611,
TPS54612, TPS54613, TPS54614, TPS54615 and
TPS54616 low-input voltage high-output current
synchronous-buck PWM converters integrate all
required active components. Included on the substrate
are true, high-performance, voltage error amplifiers that
provide high performance under transient conditions;
an under-voltage-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 TPS54611–6 devices are available in a thermally
enhanced
28-pin
TSSOP
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.
(PWP)
PowerPAD
50
55
60
65
70
75
80
85
90
95
100
0
1
2
3
4
5
6
Load Current – A
E
EFFICIENCY AT 350 kHz
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.
PowerPAD and SWIFT are trademarks of Texas Instruments.
Copyright
2002, Texas Instruments Incorporated
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.