Manuals / Texas Instruments / Computer Equipment / Power Supply

Texas Instruments SLVP089 manual

Models: SLVP089

1 28

Download 28 pages 57.8 Kb

Page 18

Image 18

1-10

Page 18

Image 18

Contents

User’s Guide ConSLVverterP089SynchronousEvaluationModuleBuckMixed-Signal Linear Products 1998Printed in U.S.A 07/98SLVU001A SLVP089 Synchronous Buck Converter Evaluation Module User’s Guide Literature Number SLVU001A JulyIMPORTANT NOTICE About This Manual How to Use This ManualRead This First Related Documentation From Texas InstrumentsIf You Need Assistance FCC WarningTrademarks 2.1 Introduction 2.2 Operating Specifications 2.3 Design Procedures Contents1.1 Introduction 1.2 Schematic 1.3 Input/Output Connections 2.3.1 Duty Cycle Estimate 2.3.2 Output Filter 2.3.3 Power SwitchFigures TablesPage HardwareChapter Topic1.1 Introduction Figure 1-1. Typical Synchronous Buck ConverterHardware 1.2 SchematicFigure 1-2. Schematic Diagram Schematic1.3 Input/Output Connections Figure 1-3. Input/Output ConnectionsInput/Output Connections Board Layout 1.4 Board LayoutFigure 1-4. Board Layout Hardware1-51.5 Bill of Materials Table 1-1. Bill of MaterialsBill of Materials Table 1-3. Load Regulation and Ripple, 3.3-V 9-V Input 1.6 Test ResultsTable 1-2. Line/Load Regulation, 3.3-V Total Variation Figure 1-5. Efficiency Vs LoadTest Results Figure 1-6. Power Switch Turn-On and Delay from Q2 OffFigure 1-7. Power Switch Turn-Off and Delay to Q2 On V CC = 12Hardware1-9 Figure 1-8. Inductor and Output RippleTest Results 2-ACPage Page Design ProcedureChapter Topic2.1 Introduction Operating Specifications 2.2 Operating SpecificationsTable 2-1. Operating Specifications Design Procedure2.3.1 Duty Cycle Estimate 2.3 Design Procedures2.3.3 Power Switch 2.3.2 Output Filter2.3.4 Synchronous Switch and Rectifier 2.3.5 Snubber Network+ 3 W 1 mA 2.3.6 Controller Functions2.3.7 Loop Compensation 0.001Figure 2-1. Power Stage Bode Plot + DD V OFigure 2-2. Compensation Network Figure 2-3. Bode Plot Figure 2-4. Output Response