Here’s this week’s schematic capture, by our own Mike Engelhardt. This schematic explores a differential Class-D output stage driving an 8Ω load through LC output filters, with Fourier analysis used to evaluate waveform purity and distortion performance.
Highlights:
• 2 MHz switching frequency
• LC reconstruction filtering
• Differential output topology
• Harmonic and THD analysis
• Efficient high-power audio amplification modeling
The simulation demonstrates how modern switching amplifiers can deliver clean sinusoidal output with extremely low distortion while maintaining high efficiency.
A great example of combining power electronics and signal integrity analysis in a single simulation environment.
Please send any submissions to tim.mccune@qorvo.com. (Schematic Capture Post #086)
classd.cpp (4.4 KB)
Class-D.qsch (7.4 KB)
ClassD3.qsch (5.6 KB)