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TPS54292 Datasheet Preview

TPS54292 Datasheet

Fully-Synchronous Buck Converter

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TPS54290, TPS54291, TPS54292
SLUS973A – OCTOBER 2009 – REVISED NOVEMBER 2016
TPS5429x 1.5-A and 2.5-A Dual, Fully-Synchronous
Buck Converter With Integrated MOSFET
1 Features
1 4.5-V to 18-V Input Range
• Output Voltage Range 0.8 V to DMAX × VIN
• Fully Integrated Dual Buck: 1.5 A and 2.5 A
• Three Fixed Switching Frequency Versions:
– TPS54290: 300 kHz
– TPS54291: 600 kHz
– TPS54292: 1.2 MHz
• Integrated UVLO
• 0.8 VREF With 1% Accuracy (0°C to 85°C)
• Internal Soft Start:
– TPS54290: 5.2 ms
– TPS54291: 2.6 ms
– TPS54292: 1.3 ms
• Dual PWM Outputs 180° Out-of-Phase
• Dedicated Enable for Each Channel
• Current Mode Control for Simplified
Compensation
• External Compensation
• Pulse-by-Pulse Overcurrent Protection,
2.2-A and 3.8-A Overcurrent Limit
• Integrated Bootstrap Switch
• Thermal Shutdown Protection at 145°C
• 16-Pin PowerPAD™ HTSSOP Package
3 Description
The TPS54290, TPS54291, and TPS54292 devices
are dual-output, fully synchronous buck converters
capable of supporting applications with a minimal
number of external components. It operates from a
4.5-V to 18-V input supply voltage, and supports
output voltages as low as 0.8 V and as high as 90%
of the input voltage.
Both high-side and low-side MOSFETs are integrated
to provide fully synchronous conversion with higher
efficiency. Channel 1 can provide up to 1.5 A of
continuous current. Meanwhile, Channel 2 supports
up to 2.5 A.
Current mode control simplifies the compensation.
The external compensation adds flexibility for the
user to choose different type of output capacitors.
180° out-of-phase operation reduces the ripple
current through the input capacitor, providing the
benefit of reducing input capacitance, alleviating EMI
and increasing capacitor life.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS54290
TPS54291
TPS54292
HTSSOP (16)
5.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
2 Applications
• Set-Top Boxes
• Digital TVs
• Power for DSP
• Consumer Electronics
Simplified Schematic
VIN
VOUT1
TPS54290
1 PVDD1 PVDD2 16
2 BOOT1 BOOT2 15
3 SW1
SW2 14
4 PGND1 PGND2 13
5 EN1
BP 12
6 EN2
GND 11
7 FB1
FB2 10
8 COMP1 COMP2 9
GND
VOUT2
UDG-09130
Copyright © 2016, Texas Instruments Incorporated
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.




etcTI

TPS54292 Datasheet Preview

TPS54292 Datasheet

Fully-Synchronous Buck Converter

No Preview Available !

TPS54290, TPS54291, TPS54292
SLUS973A – OCTOBER 2009 – REVISED NOVEMBER 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ...................................... 5
7.2 ESD Ratings.............................................................. 5
7.3 Recommended Operating Conditions....................... 5
7.4 Thermal Information .................................................. 5
7.5 Electrical Characteristics........................................... 6
7.6 Typical Characteristics .............................................. 8
8 Detailed Description ............................................ 10
8.1 Overview ................................................................. 10
8.2 Functional Block Diagram ....................................... 10
8.3 Feature Description................................................. 11
8.4 Device Functional Modes........................................ 17
9 Application and Implementation ........................ 18
9.1 Application Information .......................................... 18
9.2 Typical Applications ................................................ 18
10 Power Supply Recommendations ..................... 25
11 Layout................................................................... 25
11.1 Layout Guidelines ................................................. 25
11.2 Layout Examples................................................... 26
11.3 Overtemperature Protection and Junction
Temperature Rise .................................................... 27
11.4 Power Derating ..................................................... 28
12 Device and Documentation Support ................. 29
12.1 Documentation Support ........................................ 29
12.2 Related Links ........................................................ 29
12.3 Receiving Notification of Documentation Updates 29
12.4 Community Resources.......................................... 29
12.5 Trademarks ........................................................... 29
12.6 Electrostatic Discharge Caution ............................ 29
12.7 Glossary ................................................................ 29
13 Mechanical, Packaging, and Orderable
Information ........................................................... 30
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Original (October 2009) to Revision A
Page
• Added ESD Ratings table, Thermal Information table, Feature Description section, Device Functional Modes,
Application and Implementation section, Power Supply Recommendations section, Layout section, Device and
Documentation Support section, and Mechanical, Packaging, and Orderable Information section....................................... 1
• Deleted Ordering Information table; see POA at the end of the data sheet........................................................................... 1
• Deleted Lead temperature (260°C maximum)........................................................................................................................ 5
• Added Thermal Information table to replace the Package Dissipation Ratings table ............................................................ 5
2
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Copyright © 2009–2016, Texas Instruments Incorporated
Product Folder Links: TPS54290 TPS54291 TPS54292


Part Number TPS54292
Description Fully-Synchronous Buck Converter
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