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Texas Instruments SLVP089 Read This First, About This Manual, How to Use This Manual, Preface

Models: SLVP089

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Preface

Preface

Read This First

About This Manual

This user’s guide is a reference manual for the SLVP089 Synchronous Buck Converter Evaluation Module used to evaluate the performance of the TL5001 PWM Controller. This document provides information to assist managers and hardware engineers in application development.

How to Use This Manual

This manual provides the information and instructions necessary to design, construct, operate, and understand the SLVP089. Chapter 1 describes and lists the hardware requirements; Chapter 2 describes design considerations and procedures; and Appendix A contains the data sheet for the TL5001 PWM Controller

Related Documentation From Texas Instruments

The following books describe the TL5001 and related support tools. To obtain a copy of any of these TI documents, call the Texas Instruments Literature Re- sponse Center at (800) 477–8924. When ordering, please identify the book by its title and literature number.

TL5001 Pulse-Width-Modulation Control Circuits Data Sheet (Literature number SLVS084C). It contains electrical specifications, available tem- perature options, general overview of the device, and application in- formation.

Designing with the TL5001C PWM Controller Application Report

(Literature number SLVA034).

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Texas Instruments SLVP089 manual Read This First, About This Manual, How to Use This Manual, Preface

Contents

Mixed-Signal Linear Products ConSLVverterP089SynchronousEvaluationModuleBuckUser’s Guide 1998SLVU001A Printed in U.S.A07/98 Literature Number SLVU001A July SLVP089 Synchronous Buck Converter Evaluation Module User’s GuideIMPORTANT NOTICE Read This First How to Use This ManualAbout This Manual Related Documentation From Texas InstrumentsTrademarks If You Need AssistanceFCC Warning 1.1 Introduction 1.2 Schematic 1.3 Input/Output Connections Contents2.1 Introduction 2.2 Operating Specifications 2.3 Design Procedures 2.3.1 Duty Cycle Estimate 2.3.2 Output Filter 2.3.3 Power SwitchTables FiguresChapter HardwarePage TopicFigure 1-1. Typical Synchronous Buck Converter 1.1 IntroductionFigure 1-2. Schematic Diagram 1.2 SchematicHardware SchematicInput/Output Connections 1.3 Input/Output ConnectionsFigure 1-3. Input/Output Connections Figure 1-4. Board Layout 1.4 Board LayoutBoard Layout Hardware1-5Bill of Materials 1.5 Bill of MaterialsTable 1-1. Bill of Materials Table 1-2. Line/Load Regulation, 3.3-V Total Variation 1.6 Test ResultsTable 1-3. Load Regulation and Ripple, 3.3-V 9-V Input Figure 1-5. Efficiency Vs LoadFigure 1-7. Power Switch Turn-Off and Delay to Q2 On Figure 1-6. Power Switch Turn-On and Delay from Q2 OffTest Results V CC = 12Test Results Figure 1-8. Inductor and Output RippleHardware1-9 2-ACPage Chapter Design ProcedurePage Topic2.1 Introduction Table 2-1. Operating Specifications 2.2 Operating SpecificationsOperating Specifications Design Procedure2.3.3 Power Switch 2.3 Design Procedures2.3.1 Duty Cycle Estimate 2.3.2 Output Filter+ 3 W 2.3.4 Synchronous Switch and Rectifier2.3.5 Snubber Network 2.3.7 Loop Compensation 2.3.6 Controller Functions1 mA 0.001+ DD V O Figure 2-1. Power Stage Bode PlotFigure 2-2. Compensation Network Figure 2-4. Output Response Figure 2-3. Bode Plot