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The purpose of this report is to provide a quick reference document for application designers and other users who are interested in TI buck-boost converters. Each application report discussed in this document is identified by its title and unique TI literature number. This list of application notes is categorized by topic, and is regularly maintained to ensure that the available information is up-to-date. To access the complete version of a given report, click the document literature number (Sxxxxxx). This tag provides a hyperlink to the document location on www.ti.com, where you can either read the document in its entirety or download it for personal use.
For questions not covered in this report, contact the TI E2E Community (Note that this link requires a secure log on.)
Fundamentals of Switching Converters | |
Switching Regulator Fundamentals | SNVA559 |
Under the Hood of a Noninverting Buck-Boost Converter | SLUP346 |
Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies | SLVA059 |
Basic Calculations of a 4-Switch Buck-Boost Power Stage | SLVA535 |
Basic Calculation of an Inverting Buck-Boost Power Stage | SLVA721 |
Design Support | |
Understanding the Absolute Maximum Ratings of the SW Node | SLVA494 |
IQ: What It Is, What It Isn’t, and How to Use It | SLYT412 |
Understanding Undervoltage Lockout in Power Devices | SLVA769 |
Extending the Soft Start Time Without a Soft Start Pin | SLVA307 |
Achieving a Clean Startup by Using a DC/DC Converter With a Precise Enable-Pin Threshold | SLYT730 |
Methods of Output-Voltage Adjustment for DC/DC Converters | SLYT777 |
Design Considerations for a Resistive Feedback Divider in a DC/DC Converter | SLYT469 |
Prevent Battery Overdischarge With Precise Threshold Enable Pin | SLVAE79 |
Precise Start-Up Delay Using Enable Pin with Precise Voltage Threshold | SLVAEA3 |
Choosing an Appropriate Pull-Up and Pull-Down Resistor for Open Drain Outputs | SLVA485 |
Optimizing Transient Response of Internally Compensated DC-DC Converters With Feedforward Capacitor | SLVA289 |
Improving Load Transient Response of DC/DC Converters Powering Controlled Loads | SLVAEE0 |
Extending Battery Life With Low Quiescent Current and Dynamic Voltage Scaling | SLVAER8 |
PCB Layout and Thermal Considerations | |
QFN Layout Guidelines | SLOA122 |
PowerPAD™ Layout Guidelines | SLOA120 |
DSBGA Wafer Level Chip Scale Package | SNVA009 |
Five Steps to a Great PCB Layout for a Step-Down Converter | SLYT614 |
Five Steps to a Good PCB Layout of a Boost Converter | SLVA773 |
Semiconductor and IC Package Thermal Metrics | SPRA953 |
EMI Considerations | |
EMI/RFI Board Design | SNLA016 |
Layout Tips for EMI Reduction in DC/DC Converters | SNVA638 |
Simple Success with Conducted EMI from DC/DC Converters | SNVA489 |
Minimizing Ringing at the Switch Node of a Boost Converter | SLVA255 |
Layer Design for Reducing Radiated EMI of DC to DC Buck-Boost Converters | SLVAEP5 |
Device Specific Technical Discussions | |
High Efficiency Battery Powered High Brightness LED Driver Using the TPS63000 | SLVA268 |
Supercapacitor Backup Power Supply With TPS63802 | SLVAE52 |
Dynamically Adjustable Output Using TPS63000 | SLVA251 |
How to Use VSEL Function of TPS63070 | SLVAE62 |
Using Input Current Limiting to Extend Battery Life | SLVAES7 |
TPS63802HDKEVM - Hardware Development Kit | SLVUBU0 |
Measurement Techniques | |
Accurately Measuring Efficiency of Ultralow-IQ Devices | SLYT558 |
Performing Accurate PFM Mode Efficiency Measurements | SLVA236 |
How to Measure the Loop Transfer Function of Power Supplies | SNVA364 |
Simplifying Stability Checks | SLVA381 |
Techniques for Accurate PSRR Measurements | SLYT547 |
Buck-Boost Converter Applications | |
Different Methods to Drive LEDs Using TPS63xxx Buck-Boost Converters | SLVA419 |
Low-Power TEC Driver | SLVA677 |
Buck-Boost Converters Solving Power Challenges in Optical Modules | SLVAEB2 |
Improve Efficiency in TWS and Hearing Aid Earbuds With a Buck-Boost Converter | SLVAED7 |
High-Efficiency Backup Power Supply | SLVA676 |
Smart Electricity Meter Supercapacitor Backup Power Supply With Current Limit | SLVAEI4 |
Using Non-Inverting Buck-Boost Converter for Voltage Stabilization | SLVAEA2 |
This section lists several application notes that discuss fundamental operation of switching converters and present basic calculations for buck-boost converter.
Switching Regulator Fundamentals:SNVA559
This application report presents basics of commonly used converter topologies, including the inverting buck-boost. Some practical tips are shown, such as guidelines for PCB layout and measurements.
Under the Hood of a Noninverting Buck-Boost Converter:SLUP346
Various topologies used in non-inverting buck-boost designs are presents in this application report, with a focus on four-switch, non-inverting buck-boost converter. A practical design example illustrates a four-switch buck-boost application design including the PCB layout and the performance achievable with this topology.
Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies: SLVA059
This application report describes and analyzes the operation of the inverting buck-boost power stage. Two modes of operation, continuous conduction mode and discontinuous conduction mode, are examined, together with steady-state and small-signal analysis.
Basic Calculations of a 4-Switch Buck-Boost Power Stage: SLVA535
This application note provides equations to calculate the power stage of a non-inverting buck-boost converter with integrated switches, operating in continuous conduction mode. One practical design example is presented as well.
Basic Calculation of an Inverting Buck-Boost Power Stage: SLVA721
This application note provides basic formulas needed to design the power stage of a non-synchronous inverting buck-boost converter with integrated switches. It provides formulas and considerations for selecting external components and an estimation for the maximum output current.