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Texas Instruments UCC38500EVM manual General Information, Chapter, Page, Topic

Models: UCC38500EVM

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Chapter 1

General

Information

This chapter details the Texas Instruments (TI) DM38500 PFC/PWM Combination Controller 100W Power Factor Correction Preregulator Evaluation Module (EVM) SLUU068. It includes a list of EVM features, a brief description of the module illustrated with a pictorial, schematic diagrams, and EVM specifications.

Topic		Page

1.1	Features	. . 1−2
1.2	Description	. . 1−2
1.3	Operating Guidelines	. . 1−3
1.4	DM38500 EVM Performance	. . 1−5

General Information

1-1

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Texas Instruments UCC38500EVM manual General Information, Chapter, Page, Topic

Contents

User’s Guide Using the UCC38500EVMSLUU068C February Using the UCC38500Power Management Products User’s GuideIMPORTANT NOTICE EVM IMPORTANT NOTICE EVM WARNINGS AND RESTRICTIONS 1.3.4 Additional Information 1.4 DM38500 EVM Performance Contents1−1. DM38500 Evaluation Module Application Schematic 1.3.3 Step 3. Evaluating the Demonstration’s Boards PerformanceTopic General InformationChapter PageJ Peak Current Mode Control in Second Stage J Programmable Oscillator 1.1 FeaturesJ Controls Boost Preregulator to Near-unity Power Factor J Accurate Power Limiting J Improved Feedforward Line Regulation1.3.3 Step 3. Evaluating the Demonstration’s Boards Performance 1.3.2 Step 2. Applying Input Power1.3 Operating Guidelines 1.3.1 Step 1. Load ConnectionsEVM Warnings and High-Temperature componentHigh-Voltage component. See See EVM Warnings1.4 DM38500 EVM Performance Figure 1−3. DM38500 Power FactorFigure 1−2. DM38500 EVM Efficiency Total Figure 1−4. DM38500 Total Harmonic DistortionDistortion V IN = 175Topic ReferenceChapter PageTable 2−1. DM38500 Part Descriptions 2.1 DM38500 EVM Part DescriptionsValue/Type Number 2 Unless otherwise specified, all resistors have a tolerance of ±1%3 Capacitor C38 is located at reference designator R38 on the PCB Description2.2 DM38500 Board Layouts Figure 2−1. DM38500 EVM PC Board Top Assembly