Power Class-D D2K Full-bridge Amplifier

Power Class-D Full-bridge Amplifier - D2K PCB Gerber File

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:


Part List Power Class-D Full-bridge Amplifier - D2K:

Core T157

22 uH = 2

Resistor

10 ohm (1/4 watt)=10

100 Ohm (1/4watt)=5

470 ohm (1/4 watt)= 3

1k Ohm (1/4 watt)=4

1k2 =1

3K3 (1/4watt)=2

4k7 (1/4watt)=16

6K8 (1/4 watt)=3

8k2=1

10k (1/4watt)=14

47k (1/4watt)=2

15k (1/4watt)=4

22k (1/4watt)=1

33k (1/4watt)=1

100k (1/4watt)=7

220k (1/4watt)=1

4r7 (1 watt)=2

10 ohm (2watt)=4

10K (2Watt)=1

10 ohm/5watt=1

1k /5watt=2

5k6 (5Watt)=2

0.1R (5Watt)=4

Capasitor milar/mkm/mkp

105/400v =2

105/250V=2

104/250v=4

562=1

102=4

104=13

471=4

221/2kv=4

151=2

Dioda/zener

Mur 460=7

4148=16

1N5819=4

12v=3

5v=1

Elco

470uf/16v=1

220uf/35v=3

220uf/16v=1

100uf/50v=2

47uf/25v=5

22uf/50v=2

10uf/16v=2

10uf/16v Nonpolar=4

Transistor/TR

IRFP250/P260/ IRFP4227=4

NPN(BD139)=5

PNP(BD140)=4

2N5551=7

2N5401=3

IC

IR2110=2

CD4070 /4030=1

TL071/081=1

4558/NE5532=2

TL431=1

RELAY12V.30A=1

LED

BLUE?RED/GREEN=7

The problem and input for this full-bridge amplifier.

2x Core MS157060, 19 turns for 90Vdc. 4x157060 14 turns to supply 90Vdc to 130VdcMosfet 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 / IR2113The 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

Download

PCB Layout Class-D D2K Fullbridge Gerber File

Komentar

Posting Komentar

Postingan populer dari blog ini

Problem RGB TV Cina Yang Sering Menjebak Teknisi

Gambar
Problem RGB TV Cina Yang Sering Menjebak Teknisi "> Diantara problem kerusakan TV Cina yang sering menjebak teknisi adalah bagian RGB. Ini dari hasil pengamatan Admin ketika membantu teman dalam menangani kerusakan seputar RGB TV Cina. Banyak sekali kesalahan prediksi yang berujung pada gagalnya menyelesaikan pekerjaan servis. Diantara problem RGB yang paling sering Admin temukan dan tidak semua teknisi paham dalam memperbaikinya adalah: Gambar buram kadang seperti pelangi berkabutGambar dominan di warna tertentuGambar muncul warna tertentu disertai dengan garis-garisGambar seperti kliseGambar blank putih bergarisWarna seleberanDan masih banyak lagi. Nah dari semua problem atau kerusakan seputar RGB TV cina diatas, akan saya bahas satu-persatu tentang penyebab pasti dan cara memperbaikinya. 1. Gambar buram kadang seperti pelangi berkabut Gambar buram dan terkadang seperti pelangi dipenuhi kabut sering dianggap teknisi adalah kerusakan tabung sudah lemah atau FBT rusak. T...
Baca selengkapnya

3000 Watts Power Amplifier Class D Mosfet IRFP260 / IRFP4227

Gambar
3000 Watts Power Amplifier Class D Mosfet IRFP260 / IRFP4227 3000W (3kW) Class D Power Amplifier Project using IC IR2110, CD4049 (HEF4049/HCF4049), NE555, LM311, and Op-Amp Comparator TL071 as the main stage amplifier, the driver stage using BD140/BD139 or you can use any driver stage power amplifier transistors. The Final Stage Amplifier using 4 x Mosfet Transistor IRFP260 or you can use IRFP250 / IRFP460 / IRFP4227. And do not forget to lose the importance of the LPF Filter. The advantages of this high power amplifier are: Strong Bass Boost, not SaggySecondary comfortable bias voltage (can be AC (transformer) / DC (adapter))Highly Efficient Rail - Stack LayoutOversized Heatsink & Output Coil (not easy saturation)Pulse Resolution Adjust Enable Below the Circuit Diagram of 3000W Class D Amplifier includes PCB Layout design: Component List Resistors 1/4W: 4R7 x 2, 10R x 5, 100R x1, 47R x 4, 1K x 8, 4K7 x 4, 100K x 3. Resistors 1W: 22R x 2 Resistors 2W:10R x 1 , 1K5 x 1...
Baca selengkapnya

High Power Class-D Amplifier D4K5

Gambar
High Power Class-D Amplifier D4K5 This High Power Amplifier circuit is a class D power amplifier, which has a high enough power to generate 1000W of power at 8 Ohm impedance - and also more power up to 2000W at 4 Ohm impedance. This Power Amplifier can generate great power if given enough power supply. For example, you can use 30A transformer with 100V symmetric voltage.  Here is the circuit scheme of High Power Class-D Amplifier D4K5: View larger schematic image here:  Power Amplifier Class-D D4K5 Component List Resistor R1, R3, R4, R9, R13, R18, R19, R20= 1K R2, R16, R39= 100K R5, R6= 10R R7, R8=6K8/2W R10, R21, R26, R27=4K7 R11, R17=6K8 R12=100R R14, R15=4R7 R22, R23, R24, R25, R31, R33=47R R28, R29, R30=0,1R/2W R36, R38=22R/2W R40=1K5/5W R41=10R/2W RV1=10K Trimpot Capacitor C1=10uF/16V C2=10N C3, C4=1N C5=470uF/16V C6=220uF/16V C7, C9, C11, C12, C13, C15, C16, C18, C19=100N MKP C8=470uF/16V C10, C14, C17=100uF/16V C20=10uF/50V C21, C22, ...
Baca selengkapnya