Sunday, August 06, 2017

900W Class-D Next Generation Power Amplifier

900W Class-D Next Generation Power Amplifier Circuit

The Class-D Amplifier concept
In the last decade, in the world of audio power amplifiers have been available commercial products for audio.A new type amplifier that is Class-D Amplifier. Unlike the Class-A, B, AB, in which the incoming signal directly, is amplified in the form of the original sound signal, in Class-D Amplifier, a sound signal counting is performed enter but still in analog method, the signal strengthened. At the end level (final stage) of the amplifier, the signal is returned to sound signals by using the inductor-capacitor (L-C) filter.

Schematic Diagram
There are many designs of Class-D Amplifier schemes that can be found on the internet. This time that will be discussed in this paper is Self Oscillating Cass-D Amplifier IRS-900D. This scheme circulates on the internet, and is pretty good, can be implemented and has an output capability of up to 900 Watt at 4 ohms, a considerable capability.
To create a good Class-D and high quality is required good component quality and layout PCB appropriate for high-frequency switching. However, for this limitation, it can not produce the quality that meets industry criteria but is still very satisfying when compared to Class-AB class assemblies sold in the market.
Here is a scheme that applies the design and concept of class D. This scheme has been modified by the author Kartino Surodipo to be more reliable and safe. The red color values below are replacements of the original schema values and there may be no paths on the PCB. So it should be soldered under PCB.
900W Power Amplifier Circuit Diagram

The above circuit uses +/- 100V DC power supply. Besides, a separate 12 Volt power supply is required to drive the IR2110 IC gate driver. The consideration made separately is because it will further simplify the scheme. With the above series, suitable for allotment from the subwoofer to mid-hi. This designation is not disappointing, considering that in the market the 900 Watt assembly kit is generally reserved for Subwoofer applications until Mid-Hi.

Modifications can be made to improve performance. For example by increasing the oscillation frequency capability. In Class-d self-oscillation, the oscillation frequency velocity is determined by the on-off speed effect of the closed loop feedback which involves the entire component in the feedback loop. Improvement can be done by replacing OP Amp comparator with higher capabilities, eg from Burr-Brown. And the main one is the mosfet power, which can be selected by the product with low gate capacitance from IXYS or IRFP4227, or IRFB4227, or other brands with more advanced generation. To note is the smallest gate capacitance and the highest switching speed, and of course the big SOA.

PCB Layout Design
PCB Layout 900W Class D Amplifier

If you want to buy PCB please visit here: PCB CLASS-D 900W
Buy PCB Design Class D Amplifier

Here's a little explanation of the class D amplifier and also for the scheme and PCB Power Amplifier 900W class D. PCB you can buy on the link contained in the post. PCB made by original Mr. Kartino Surodipo. For the next post, I will share the installation and try the quality and power of this D-class power amplifier.

See also 200W Class-D Amplifier

Electronic Circuit is a good site for hobbyist also who would like to try DIY because it shared good circuits. If you have a personalized circuit requirement you may feel free to request it through the comment box or contact me.


Super Amplifier, do you have a tested video. If you have please share sir.

hello gothamp,
the video updated soon.. so please wait.

did you make this class d amp working properly?

yes, is the most powerful next generatin power amplifier. I have tested 200w class d amp. and so i will make the class d greater power than 200w.

parts please ,please

Sorry for missing the part list, wait untikl im update it.

12v its sorting in pcb why?? i check pcb but no fault detect help me

Bro pls wite the length of the PCB pls

el pDF con las PCB por favor amigo

There is no PDF for this amp, see d1k5 power amplifier in newest post.

Bro pls Tell me thebpcb size

Your fucking pcb is wrong...fuck off with this pcb...

how 2 buy a amplifier board of D1K5 please tell me as soon as because i want this board and what is price of this products my mob. num. 8769960046 & maail id is

devreler aslında çalışıyor fakat bilerek ve isteyerek bazı yanlışlıklar yapılmış bu yüzden çalışmıyorlar pcb satmak için böyle bir oyuna gerek yok sizi ulusal internet ağına şikayet etmek zorunda kalıyorum 900 -1500- 2000 full biridge ve son olarak bugün 3000 wattı yaptım ve çalışmıyorlar bir sürü para harcadım hepsi çöp oldu yazık insanları aldatmayın devreleri düzgün ve çalışır verene kadar kimse uğraşmasın para ve zaman kaybı

the circuits are actually working but knowingly and willingly made some inaccuracies so they do not need such a game to sell pcb you have to complain to the national internet network 900 -1500- 2000 full biridge and finally 3000 watts and did not work a lot of money I spent all the garbage was a pity people deceive the circuits properly and it works until no one bothering money and a waste of time

Sir please help,My core 47mm×24mm×17mm yellow/white,1.5mm wire turn-12,but Verry heating, how much turn ?

Please sir help my yellow/white core47mm×24mm×17mm,but how turn?

send scheme best quality visible

Give me the size of pcb pls.

Pcb of 900watts class d amplifier

Alguien me puede regalar el pdf para fabricarlo para mi