Texas Instruments UCC38500EVM manual Contents, Evaluating the Demonstration’s Boards Performance

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Contents

Contents

Contents

1 General Information

1-1

1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.3 Operating Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1.3.1 Step 1. Load Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1.3.2 Step 2. Applying Input Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.3.3Step 3. Evaluating the Demonstration’s Boards Performance. . . . . . . . . . . . . . 1-3

1.3.4 Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.4 DM38500 EVM Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

2 Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.1 DM38500 EVM Part Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2.2 DM38500 Board Layouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

 

 

Figures

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1−1. DM38500 Evaluation Module Application Schematic

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1−2.

DM38500 EVM Response, VCC = +15 V

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1−3.

DM38500 Response, VCC = +15 V

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1−4. DM38500 Response, VCC = +15 V

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2−1.

DM38500 EVM PC Board: Top Assembly

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Contents Using the UCC38500EVM User’s GuideSLUU068C User’s Guide Using the UCC38500Power Management Products FebruaryIMPORTANT NOTICE EVM IMPORTANT NOTICE EVM WARNINGS AND RESTRICTIONS 1.3.3 Step 3. Evaluating the Demonstration’s Boards Performance Contents1−1. DM38500 Evaluation Module Application Schematic 1.3.4 Additional Information 1.4 DM38500 EVM PerformancePage General InformationChapter TopicJ Accurate Power Limiting J Improved Feedforward Line Regulation 1.1 FeaturesJ Controls Boost Preregulator to Near-unity Power Factor 1.2 Description1.3.1 Step 1. Load Connections 1.3.2 Step 2. Applying Input Power1.3 Operating Guidelines 1.3.3 Step 3. Evaluating the Demonstration’s Boards PerformanceSee EVM Warnings High-Temperature componentHigh-Voltage component. See EVM Warnings andFigure 1−3. DM38500 Power Factor 1.4 DM38500 EVM PerformanceFigure 1−2. DM38500 EVM Efficiency Total Figure 1−4. DM38500 Total Harmonic DistortionDistortion V IN = 265Reference DM38500 EVM Part DescriptionsDM38500 Board Layouts 2.1 DM38500 EVM Part Descriptions Table 2−1. DM38500 Part DescriptionsDescription 2 Unless otherwise specified, all resistors have a tolerance of ±1%3 Capacitor C38 is located at reference designator R38 on the PCB Value/Type NumberFigure 2−1. DM38500 EVM PC Board Top Assembly 2.2 DM38500 Board Layouts
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