SLVA958B June   2021  – May 2022 LM2776 , LM27761 , LM27762 , LM3670 , LM3671 , LM3674 , LM7705 , TLV62065 , TLV62080 , TLV62084 , TLV62084A , TLV62085 , TLV62090 , TLV62095 , TLV62130 , TLV62130A , TLV62150 , TLV62565 , TLV62568 , TLV62569 , TLV62585 , TPS60400 , TPS60403 , TPS62065 , TPS62080 , TPS62085 , TPS62088 , TPS62090 , TPS62095 , TPS62097 , TPS62110 , TPS62120 , TPS62122 , TPS62125 , TPS62130 , TPS62130A , TPS62130A-Q1 , TPS62133 , TPS62135 , TPS62136 , TPS62140 , TPS62142 , TPS62143 , TPS62150 , TPS62160 , TPS62160-Q1 , TPS62162 , TPS62170 , TPS62170-Q1 , TPS62172 , TPS62173 , TPS62175 , TPS62177 , TPS62180 , TPS62200 , TPS62203 , TPS62230 , TPS62240 , TPS62260 , TPS62290 , TPS62400 , TPS62420 , TPS62480 , TPS62560 , TPS62730 , TPS62740 , TPS62742 , TPS62743 , TPS62745 , TPS62746 , TPS62748 , TPS62770 , TPS62800 , TPS62801 , TPS62802 , TPS62806 , TPS62807 , TPS62808 , TPS62821 , TPS62840 , TPS63700 , TPS63710 , TPS82084 , TPS82085 , TPS82130 , TPS82140 , TPS82150 , TPS82740A , TPS82740B , TPSM82480 , TPSM82810 , TPSM82813 , TPSM82821 , TPSM82822

 

  1. Abstract
    1.     Trademarks
  2. Introduction
  3. Summary Table
  4. Fundamentals of Switchmode DC/DC Converters
  5. Control – Mode Architecture
  6. Design, Layout, and Manufacturing Support
  7. Thermal Considerations
  8. Low Noise and Controlling EMI
  9. Device-Specific Technical Discussions
  10. Calculation, Simulation, and Measurement Techniques
  11. 10DC/DC Converter Applications
  12. 11Revision History

Device-Specific Technical Discussions

This paragraph focuses on technical considerations regarding specific devices from our portfolio. The matters discussed in those notes may not be applicable to alternative part numbers unless noted otherwise.

Optimizing the TPS62130, TPS62140, TPS62150 and TPS62160 Output Filter:SLVA463

Optimizing the TPS62175 Output Filter:SLVA543

Optimizing the TPS62090 Output Filter:SLVA519

The DCS-Control™ topology used in the devices discussed in those notes allows for a wider range of inductor and output capacitor values than traditional voltage mode controlled buck converters. More lenience can therefore be tolerated in choosing inductor and output capacitor values to accomplish specific design goals, such as transient response, loop stability, maximum output current, or output voltage ripple, based on an application’s needs.

Feedforward Capacitor to Improve Stability and Bandwidth of TPS621 and TPS821-Family:SLVA466

A common method to improve the stability and bandwidth of a power supply is to use a feedforward capacitor. This improvement can be measured in both the transient response and bode plot of the new circuit. This application report details two design strategies for optimizing the feedforward capacitor value to improve transient response and circuit stability.

Optimizing TPS6206x External Component Selection:SLVA441

This report describes how to select the proper feedforward capacitor value to match a wide range of LC output filter values and optimize the application for smaller solution size, faster load-step response, lower output voltage ripple, increased output current, and/or increased control loop stability.

TPS62130A Differences to TPS62130:SLVA644

This short report describes the difference in how the power good pin is controlled between the TPS62130A and TPS62130 devices.

TPS6208x and TLV6208x Devices Comparison:SLVA803

This application report presents an overview of the differences among the TPS6208x devices, which are part of a family of high frequency synchronous step-down converters available in a 2-mm × 2-mm QFN package.

Output Voltage Selection for the TPS62400 Family of Buck Converters:SLVA254

The TPS624xx family of dual output DC/DC Converters has adjustable output voltages, which can be programmed with an external resistor divider network to set the output voltage during power up. Then, after power up, the output voltage can be changed through software to several predefined values. This application report explains how to determine the output voltage of the TPS62400 after power up and the software adjustable range of voltages.

Designing an Isolated Buck (Flybuck) Converter using the LMR36520:SNVA790

This application report will describe the typical operation of a flybuck from a theoretical perspective, and then walk through the process of flybuck design from a set of given operating conditions using design equations derived in referenced reports. Physical measurements will be compared to expected results, and design limitations will also be discussed.

Configuring LM62460 for Dual-Phase Operation:SNVAA21

This application report details the design, implementation and preliminary lab results of two LM62460 buck regulators configured for a dual phase solution.

How to Migrate Between LM614xx and LM624xx Product Families:SNVAA31

This application report highlights the different feature options and pin-outs between the LM614xx and LM624xx and how to best design a single universal PCB layout.

Powering Sensitive ADC Designs with the TPS62913 Low-Ripple and Low-Noise Buck Converter:SLVAEW7

The power supply design demonstrates a simplified and efficient implementation of the TPS62913 low ripple and low noise buck converter to power an ADC12DJ5200RF, reducing power consumption by 1.5W (15% power savings).

Achieving Better than 1% Output Voltage Accuracy with TPS546D24A:SLUAA02

The TPS546D24A was developed to help designers achieve higher output voltage accuracy by actually specifying the output voltage accuracy, rather than the initial, reference, or VFB accuracy.

Enhance Stability of TPSM41625 Buck Module Designs with Minimized Ceramic Output Capacitors:SLVAEZ2

Reducing the value and quantity of output capacitors can help reduce overall solution size and cost. This application report shows how to improve the stability (phase and gain margins) of TPSM41625 when using a minimum number of all ceramic output capacitors.

Powering the AFE7920 with the TPS62913 Low-Ripple and Low-Noise Buck Converter:SLVAF16

The TPS62912 and TPS62913 devices are a family of high-efficiency, low-noise and low-ripple synchronous buck converters. The devices are ideal for noise sensitive applications that would normally use an LDO for post regulation such as AFEs, high-speed ADCs, Clock and Jitter Cleaner, Serializer, De-serializer, and Radar applications.

Comparison of TPS6290x vs. TPS621x0:SLVAF55

The TPS6290x family (TPS62903, TPS62902, TPS62901) is the next generation to the TPS621x0 (TPS62130, TPS62140, TPS62150) family. This application note goes through in detail the improvements that were made from the previous version to the new and how those changes benefit the designer.

How Output Capacitor Reduction Affects Load Transient in TPS563231 with D-CAP3 Control:SLUA986

Load-transient performance of the power supply is vital to the stable operation of digital systems like settop boxes, wireless routers, digital TVs, and so forth. TI's proprietary D-CAP3 control mode supports a fast transient response with low-ESR output capacitors. This application report introduces a method to evaluate how output capacitor reduction affects the load transient in a D-CAP3 buck converter.

Minimize On-Time-Jitter and Ripple by Optimizing Compensation:SLUAA65

Noise in the current loop can affect jitter and ripple, and when designers require low output ripple and minimal on-time jitter, optimizing the voltage and current loop gain improves performance.

Demystifying and Mitigating Power Supply Ripple and Noise Implication on AFE8092:SLVAF52

Demystifying and Mitigating Power Supply Ripple and Noise Implication on AFE8092 AFE RF performance application note describes the significance of power supply impact on key RF Performance and explains the high-efficiency power topology to meet the same. The application note covers the following key points.

Expand Buck Converter Minimum Input Voltage with External VCC Bias:SLVAE69

First, this report will describe the features of the TPS56C215 device before an example of a low input voltage application is introduced. Then, a detailed schematic with the external VCC bias configuration is presented, followed by the confirmation of this theory via bench testing and an efficiency comparison.

Large Duty Cycle Operation With the TPS568230:SBVA083

The TPS568230 is an 8-A DC/DC synchronous buck converter with integrated FETs. The IC is based on Texas Instruments proprietary D-CAP3™ control architecture and can support large duty cycle operation up to 97%.

How to Understand LC Table and Select LC About TPS563202:SLUAAD3

This application report introduces the theory of calculating inductor and output capacitance. Secondly it also introduces how LC affects the loop stability with several typical applications. Finally, it gives a rule to select LC.

Powering the TPS546D24A Device Family From a Single 3.3-V Input Power Supply:SLUAA03

This application note will explore several techniques using an available 3.3-V rail when the internal circuitry of the DC/DC converter does not support 3.3-V operation.

How to Best Use TPS62903 for a Given Application Requirement:SLVAF76

This application note is divided into two segments. The first segment walks through how best to configure the TPS62903 for applications with limited space. The second segment of the report provides a detailed analysis on how to configure TPS62903 for best efficiency.

Large Duty Cycle Operation on the TPS563211:SLUAAE4

This application report introduces how the TPS563211 device is designed to implement large duty cycle operation.

Achieving Longer Hold-Up Time Using the TPS62130 in Enterprise SSD Applications:SLVAF70

This application report introduces an application method for longer hold-up time using the TPS62130 device which is an easy-to-use synchronous step-down 3-A DC/DC converter.

TPSM8A29 Fast Load Transient with DCAP-3:SLVAFB5

This application note demonstration showcases the benefits of using a D-CAP3, constant-on-time-based buck switching regulator over a fixed frequency-based buck switching regulator.

Reducing Output Ripple and Noise with the TPS84259 Module:SLYT740

This article presents several solutions to reduce noise generated by DC/DC converters and includes test data that illustrates the trade-offs between noise reduction and efficiency performance.