Transcription of Class D Amplifier Design Basics II - irf.com
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Class D Amplifier Design Basics II - irf.com
Class D Amplifier Design Basics II. 02/19/2009. Rev 1. Contents Chapter 1. Getting Familiar with Class D Audio Amplifier Chapter 2. Latest Class D Audio Amplifier Technology Trend Chapter 3. Identifying Problems ~ Performance Measurement of Class D Amplifier Chapter 4. Reducing Distortion ~Dead-time ~ LPF Designs Chapter 5. Reducing Noise ~ Isolation Technique ~ PCB Design APPENDIX. Simulation of a Simple Class D Amplifier 2. Chapter 1: Getting Familiar with Class D Audio Amplifier Audio Amplifier Market Trend More Channels Smaller Box Lighter Weight A Wire with Gain More Functions (Digital Input, Diag). Smaller Size Device Technology Lower Cost Control Technology Audio Performance 4. Why Class D Now? Audio Market Trend More Channels Class AB Smaller Size Smaller Size IR.
Class D Amplifier Innovations Device Technologies Packaging Technology Signal Processing Technologies • MOSFET FOM (Figure of Merit) improvements • Higher voltage capability • Faster and accurate switching time • High gain low noise process • High GBW (Gain Band-Width) process • Smaller • Low stray inductance • Surface mount
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