Class-D LC Filter Designer
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Description & Features

Technical documentation

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Calculate and design audio Class-D LC filters in minutes using the Class-D LC Filter Designer.  Select from 4 different filter types based on Class-D output, switching topology and performance.  Input corner frequency and quality (Q) factor to fine tune the audio frequency response.  Finally, verify the selected LC components with multiple speaker loads using the frequency response graph and Q-factor calculations.  The Class-D LC Filter Designer is the perfect quick and easy tool to get started on your next Class-D audio design!

  • Calculate LC filter inductor and capacitor values quickly
  • Select from 4 different Class-D filter types
  • Tune frequency response with corner frequency and quality factor (Q) inputs
  • Verify and graph filter response with multiple speaker loads

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Class-D LC Filter Designer


Technical documentation
Application notes (1)
Title Type Size (KB) Date
PDF 1559 09 Nov 2016
Design files (2)
Title Type Size (KB) Date
ZIP 167 22 Nov 2016
ZIP 280 23 Sep 2016

Hardware development (7)

TI Devices (2)

Part Number Name Product Family
TAS3251  175-W stereo, 350-W mono, 12- to 38-V supply, digital input Class-D Smart Audio Amplifier  Audio amplifiers 
TPA3255  315-W stereo, 600-W mono, 18- to 53.5-V supply, analog input Class-D audio amplifier  Audio amplifiers 

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