Friday, December 14, 2018

Power Class-D Full-bridge Amplifier - D2K

Power Amplifier class-d fullbridge D2K 2000 Watt
Before I share PCB Layout about full-bridge class-d power amplifiers with 2000W power I will tell you a little more about class-d power amplifiers.

Class D amplifiers are known as PWM (Pulse Width Modulation) amplifiers or Switching amplifiers which are now increasingly popular in use. Replaces the class AB amplifier that has been used a lot before

Then what is the D class amplifier like? And what are the advantages?

Class AB amplifiers have a relatively large "power dissipation" (loss of power) that requires a large amount of heat sink. The greater the power (Watt) of class AB amplifiers, the greater the cooling needed. Here there is more or less a power loss of about 25 ~ 40% which turns into heat, which must be removed through the cooler.

Class D amplifiers produce almost no heat so they don't need a cooler. The efficiency achieved is close to almost 100%, only requires a little space and a few supporting components, and of course, the price becomes cheaper. Only the INDUCTOR and CAPACITOR components of filters in class D eat a lot of space.

The working principle of Class D Amplifiers
Sound signal (audio) is a signal in the form of Sinus. Class D amplifiers first convert these sound signals into "ON-OFF" pulses (such as switching) with "period length" which can change as shown below (indicated by Vo). Therefore class D is also called PWM (Pulse Width Modulation)
To change the input signal in the form of a sine to a PWM signal, a triangle oscillator is used and a comparator as shown below.
Then the PWM signal is amplified using the Gate drive amplifier and an amplifier Output using the FET (MOSFET).
The output signal in the form of PWM pulses is then converted back into a sine signal using "Low Pass Filter" (which consists of Lf + Cf) before being to the Speaker.

The following is the PCB layout of a Power Amplifier Class full D2K bridge with a double layer layout:



The problem and input for this full-bridge amplifier.
  • 2x Core MS157060, 19 turns for 90Vdc. 4x157060 14 turns to supply 90Vdc to 130Vdc
  • Mosfet IRFP4227 for supply 90Vdc. IRFP4229 / IRFP4332 / IRFP4242 / IRFP4768 / IXTQ76N25 for supply 120Vdc. Another Mosfet is not recommended.
  • If you have installed the components according to the PCB it still does not sound, all the installation has been checked correctly then 99% is certain there is a defective component. The often defective component is logic 4030/4070. Both Op Amp, third IR2110 / IR2113
  • The supply voltage is required to fit the recommendation.
  • The recommended load impedance is 4 ohms or 8 ohms. Because the feedback loop and LPF have been maximized.
  • Installing a supply with low voltage causes a clip and causes the amplifier to break down.
Video Build and Tested Power Class-D Full-bridge Amplifier - D2K


30 comments

  1. the pcb is double side board?

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  2. Hello, the link is dead.

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  3. good friend I am trying to download the gerber files of the Class-D D2K Fullbridge Gerber File amplifier but I get an error that the page can not be found in google drive you could send them to my mail facp_31@hotmail.com I would appreciate a greeting from Colombia


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  4. Can't download gerber file.there is a error massage.....:( :(

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  5. hi sir where i get the smps.

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  6. It's scam . now elcircuit posting scams. Don't try this waste of time and money I previously try gambit 3000w its doesn't start replace Ic transistors also mosfet but not working. Waste of time and money. Try yiroshi Yamaha other s . any one need proof +919730780975 that's my WhatsApp number. I have 2 bord in garbage.

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  7. is this amplifier working ? or not working ?? Who can tell me ?

    who tried this amplifier ??

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  8. This comment has been removed by the author.

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  9. Can't download gerber file.there is a error massage..

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  10. I ordered 5 pcb from jlcpcb. Not working, West of time and money.

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  11. Mas bro, link download nya error.

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  12. Its not scam and its working, and gerber now is not available

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  13. hola amigo, estoy tratando de descargar los archivos gerber del amplificador de archivos D2K Fullbridge Gerber de Clase D, pero recibo un error de que no se puede encontrar la página en Google Drive. Puede enviarlos a mi correo leomania3@hotmail.com un saludo desde Ecuador

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  14. Amigo me podrías colaborar con el pdf me da error mi correo es robinsonjavierl@hotmail.com gracias

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  15. Es para el amplificador 2k clase D fullbridge

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  16. This comment has been removed by the author.

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  17. Why your gerber file are always wrong. This is bad if you don't want to share don't bring it out please. Just wasting funds

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  18. AMIGO DONDE ESTA EL PCB QUE NO ESTA

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  19. Фалшиво не работи моля не объркваите хората които влагат време и пари

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  20. hola amigo, estoy tratando de descargar los archivos gerber del amplificador de archivos D2K Fullbridge Gerber de clase D, pero recibí un error de que no se puede encontrar la página en Google Drive. Puede enviarlos a mi correo joseyankee22@gmail.com un saludo desde Colombia

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  21. I think it’s cheap, it’s fun to watch, but you can try it before I bought it at mokoPCB.

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  22. If any one want Fullbridge D2K GERBER FILE then contact me on whats up number +91 9308668916.Thanks

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  23. As the Professional PCB Assembly and PCB Manufacturer in China, we pride ourselves on our Excellent Customer Service and Reliability! MOKO Technology Ltd also offers Exclusive Services to Help Our Customers with their PCB Projects. Check out our Free PCB Layout Software, our Free PCB File Check and Free PCB Sample. our Printed Circuit Board wants to make your life easier.

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  24. The one more step which MOKO Smart moved into electronics(mainly smart devices) design & manufacturing business based on its PCB Design & Manufacturing business.

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