Texas Instruments UCC38500EVM manual 4. DM38500 Total Harmonic Distortion, V IN = 175, V IN = 85

Contents Using the UCC38500EVM User’s GuideSLUU068C Using the UCC38500 Power Management ProductsUser’s Guide FebruaryIMPORTANT NOTICE EVM IMPORTANT NOTICE EVM WARNINGS AND RESTRICTIONS Contents 1−1. DM38500 Evaluation Module Application Schematic1.3.3 Step 3. Evaluating the Demonstration’s Boards Performance 1.3.4 Additional Information 1.4 DM38500 EVM PerformanceGeneral Information ChapterPage Topic1.1 Features J Controls Boost Preregulator to Near-unity Power FactorJ Accurate Power Limiting J Improved Feedforward Line Regulation 1.2 Description1.3.2 Step 2. Applying Input Power 1.3 Operating Guidelines1.3.1 Step 1. Load Connections 1.3.3 Step 3. Evaluating the Demonstration’s Boards PerformanceHigh-Temperature component High-Voltage component. SeeSee EVM Warnings EVM Warnings andFigure 1−3. DM38500 Power Factor 1.4 DM38500 EVM PerformanceFigure 1−2. DM38500 EVM Efficiency Figure 1−4. DM38500 Total Harmonic Distortion DistortionTotal V IN = 265Reference DM38500 EVM Part DescriptionsDM38500 Board Layouts 2.1 DM38500 EVM Part Descriptions Table 2−1. DM38500 Part Descriptions2 Unless otherwise specified, all resistors have a tolerance of ±1% 3 Capacitor C38 is located at reference designator R38 on the PCBDescription Value/Type NumberFigure 2−1. DM38500 EVM PC Board Top Assembly 2.2 DM38500 Board Layouts