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UCC2805x, UCC3805x Transition Mode PFC Controller
SLUS515G
September 2002 – December 2015
UCC28050
,
UCC28051
,
UCC38050
,
UCC38051
PRODUCTION DATA.
CONTENTS
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UCC2805x, UCC3805x Transition Mode PFC Controller
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
UVLO and Reference Block
7.3.2
Error Amplifier
7.3.3
Zero Current Detection and Re-Start Timer Blocks
7.3.4
Enable Block
7.3.5
Zero Power Block
7.3.6
Multiplier Block
7.3.7
Overvoltage Protection (OVP) Block
7.4
Device Functional Modes
7.4.1
Transition Mode Control
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Inductor Selection
8.2.2.2
MOSFET Selection
8.2.2.3
Diode Selection
8.2.2.4
Capacitor Selection
8.2.2.5
Multiplier Set-Up
8.2.2.6
Sense Resistor Selection
8.2.2.7
Output Voltage Sense Design
8.2.2.8
Voltage Loop Design
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.1.1
Bias Current
10.1.2
Zero Current Detection
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
Development Support
11.2
Related Links
11.3
Community Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Glossary
12
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
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