500W class d switching circuit International Rectifier IRS2092 in the pdf file prepared for the integration of the output coil cooler and so on. In addition to all the details, calculation, circuit diagram and pcb drawings given in the gerber files, there is already a multi-class d circuit via this reference design.
The IRFI4019H-117P used in the IRS2092 output can be used in separate mosfets with similar features instead of the fet module IRFI4024H-117P with 25w 100w IRFI4212H-117P with 60w 240w IRFI4019H-117P 125w 500w
IRS2092 25W-500W Class D Audio Power Amplifier Reference Design
Using the IRS2092 Protected Digital Audio Driver IRS2092 reference design is a two-channel Class D audio power amplifier that features output power scalability. The IRAUDAMP7D offers selectable half-bridge (stereo) and full-bridge (bridged) modes. The IRS2092 is a single layer PCB, such as IRFI4024H-117P, IRFI4212H-117P, IRFI4212H-117P and IRFI4020H-117P, on a single layer PCB. The design shows a single-sided board.