TPS54611_15 Datasheet, PDF (1/28 Pages) Texas Instruments – TPS5461x 3-V to 6-V Input, 6-A Output Synchronous Buck PWM Switcher With Integrated FETs (SWIFT™)

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TPS54611, TPS54612, TPS54613
TPS54614, TPS54615, TPS54616
SLVS400D – AUGUST 2001 – REVISED JANUARY 2015
TPS5461x 3-V to 6-V Input, 6-A Output Synchronous Buck PWM Switcher With Integrated
FETs (SWIFT™)
1 Features
•1 30-mΩ, 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
2 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
3 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 powergood output useful
for processor/logic reset, fault signaling, and supply
sequencing.
The TPS5461x devices are available in a thermally
enhanced 28-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.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
OUTPUT VOLTAGE
TPS54611
0.9 V
TPS54612
1.2 V
TPS54613
TPS54614
HTSSOP (28)
1.5 V
1.8 V
TPS54615
2.5 V
TPS54616
3.3 V
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Input
Simplified Schematic
VIN
PH
TPS54614
BOOT
PGND
VBIAS ^VSENSE
AGND
Output
Efficiency at 350 kHz
100
95
90
85
80
75
70
65
60
55
50
0
1
2
3
4
5
6
Load Current - A
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.