Rangkaian TDA1554 Audio Amplifier 2 x 22W BTL

Audio Amplifier Based TDA1554 IC

This audio amplifier circuit works up to 2 x 22Watt with main power IC TDA1554. The circuit has only very few components and works best with a 4 Ohm speaker.

IC TDA1554 must be connected to a heat sink. A computer cabinet fan can also be used in addition. Any way better the cooling better the performance.The circuit roughly draws 6A current at 12 V at full volume.So the power supply must be any thing more than 6A.Up to 18 V can be used

Skema rangkaian TDA1554 audio amplifier
2 x 22W BTL

List Componet

• R1 39K 1/4 Watt Resistor
• C1,C2 10uf/25V Electrolytic Capacitor
• C3 100uf/25V Electrolytic Capacitor
• C4 47uf /25V Electrolytic Capacitor
• C5 0.1uf /25V Ceramic Capacitor
• C6 2200uf/25V Electrolytic Capacitor
• U1 TDA1554 Two Channel Audio Amp Chip
• MIS Heatsink For U1

TDA1554 IC

TA8215 Car Audio Amplifier 15W BTL Stereo

Rangkaian TA8215 Car Audio Amplifier

This is circuit of 15W BTL stereo channel audio power amplifier based IC TA 8215 developed by Toshiba. In this power amplifier circuit, two TA 8215 ICs are used. This is for obtaining four channels that is two channels from each IC. TA 8215 is an IC with power amplifier stages and preamplifier integrated inside it.

The power supply required for this amplifier is single 12 V DC supply. The maximum output power delivered from each channel of this amplifier is 15 W to a 4 ohm speaker and hence the name 4×15 W power amplifier.

Skema rangkaian Car Audio Amplifier
15W BTL Stereo

TA8215 IC

R1 with R2 forms a voltage divider that attenuates the input signal by 24dB. Considering the chip's 50dB gain, that still leaves 26dB overall gain, slightly more than enough to fully saturate the amplifier when the sound card works at maximal output. C1 blocks DC at the preamplifier input. C2 is the ground return of the feedback circuit. These two capacitors need to be in the ratio shown, in order to suppress switching clicks when powering the circuit on and off. The output pins 15 and 16 are connected directly to the speaker, while C7, R6, C8 and R7 provide the proper load phase shifting to avoid high frequency instability.

The power supply is decoupled with a rather small 100uF capacitor. That's enough for higher frequency decoupling, and at lower frequencies anyway the large capacitors in the PC power supply are fine. Pins 10 and 17 supply the power amplifiers, while pin 9 provides power to the pre stages. This power is filtered by C3. The power control pin 4 allows to shut down the amplifier, an option not used here, so it's tied to 12V. Pin 1 is a muting input, also not used, and left open.

170Watt Amplifier BTL LM4651 & LM4652.

Rangkaian 170Watt Amplifier BTL

Combination of the IC LM4651 driver and the LM4652 power MOSFET provides a high efficiency power amplifier solution. The near rail-to-rail switching amplifier substantially increases the efficiency compared to Class AB amplifiers. This high efficiency solution significantly reduces the heat sink size compared to a Class AB IC of the same power level. This two-chip solution is optimum for powered subwoofers and self powered speakers.

Skema Rangkaian 170Watt Amplifier BTL LM4651 & LM4652

IC LM4651 is a integrated conventional pulse width modulator driver IC. The IC contains short circuit, under voltage, over modulation, and thermal shut down protection circuitry. The LM4651 also contains a standby function which shuts down the pulse width modulation minimizing supply current.

IC LM4652 is a fully integrated H-bridge power MOSFET IC in a TO-220 power package. The LM4652 has a temperature sensor built in to alert the LM4651 when the die temperature of the LM4652 exceeds the threshold. Together, these two IC's form a simple, compact high power audio amplifier solution complete with protection normally seen only in Class AB amplifiers. Few external components and minimal traces between the IC's keep the PCB area small and aids in EMI control.

Absolute Maximum Ratings LM4651 & LM4652

• Supply Voltage ± 22V
• Output Current (LM4652) 10A
• Power Dissipation (LM4651) 1.5W
• Power Dissipation (LM4652) 32W
• ESD Susceptibility (LM4651) 2000V,
• ESD Susceptibility LM4652 (pins 2,6,10,11) 500V
• ESD Susceptibility (LM4651) (Note 5) 200V
• ESD Susceptibility LM4652 (pins 2,6,10,11) 100V
• Junction Temperature 150°C
• Soldering Information N, TA and TF Package (10 seconds) 260°C
• Storage Temperature −40°C to + 150°C