CLASS D AMPLIFIER DESIGN BASED ON IR4301 #7

IR4301 is powerful IC with inbuilt power MOSFETS for the class D amplfliers.Many reference designs are available from International Rectifier also using various supplies and also with single supply and also with the dual power supply with both configuration of stereo mode and mono mode. IR4301 is a bit difficult to solder in home with home made PCB but a little effort will make is sound with whole lots of WATTS.

The filter is desingned for about cutoff frequency at around 30KHz and with the ouptut speaker of 4 watts..
With 18-0-18 transformer with 3 amps of current . We can get about 46 volts of output. This circuit can give output to 18*18/4 Watts of power with some lossed in circuit and also in mosfets.

Here's the IR4301 class d amp with single rail power supply .

With some shielded cable as signal source as input and output. This circuit works fine.

Check out the link is you are confused with the terms in class d amplier. 

http://shortedwire.blogspot.com/2015/07/terms-explained-in-class-d-amplifiers.html

INTRODUCTION TO #CLASS D AMPLIFIER #4

Class D amplifiers have theoretically 100 PERCENT of efficiency. Class D amplifiers are different than other types or class of amplifiers. They are different and we can compare the analogy of class d amplfiers with smps. Class D amplifiers can also be built using the smps controllers like UC3842 or SG3524 smps controllers and PWM generators..
Class D amplifiers first modulated the signal into the PWM and most of them uses sigma delta modulation techniques.
Most of the dedicated class d amplifiers like International Rectifiers' IRS2092 have their dedicated PWM modulator. They also have inbuilt High side And Low Side drivers for Mosfets.
Generally second order LC low pass filter is used for for filtering out the high frequency carrier frequency.
IR4301 is IC >100 watts and have inbuilt mosftest and only outside low pass frequency are required.
Similarly NXP TDA8950 of 340 watts of BTL (Bridge Tied Load)  configuration .

I will be posting circuit using SG3524 and IR4301 and TDA8950.