SLVAEX2
September 2020 – MONTH
TPS55288
,
TPS55288-Q1
,
TPS552882
,
TPS552882-Q1
Trademarks
1
Introduction
2
Design Process
2.1
Radiation Theory
2.2
Root Cause of the Broad Band EMI in a Buck-Boost Converter
2.3
How to Achieve Low EMI with TPS55288 Buck-Boost Converter
2.3.1
Adding Ground Planes under the Critical Loops
2.3.2
Using Symmetrical Layout Configuration
2.3.3
Using Frequency Dithering Function
2.3.4
Adding RC Snubbers at the Switching Node
2.3.5
Adding Filters at the Input and Output Side
3
Schematic and Test Result
3.1
Test Result
4
Summary
5
References
2.3
How to Achieve Low EMI with TPS55288 Buck-Boost Converter