Schematic Diagram of IRS2092 Stereo Class D Amplifier: The Genlede IRS2092 Stereo enables the construction of high-power Class D amplifier circuits, albeit at an increased cost proportional to the power output. In this project, the amplifier delivers an RMS of 2X50W with 4-ohm speakers. The power of the IRS2092 Class D amplifier is harnessed through MOSFETs, operating at a voltage of 2X35V. The symmetrical IRS2092 Stereo integrates with a 12V source over the 35V using 7812 regulators. These regulators step down the voltage, maintaining stability. To achieve this, a 7812 regulator manages the 12V output by incorporating an additional transistor in the zener regulator, ensuring the input voltage stays within the desired range. The power supply utilizes a transformer delivering 2x25V AC at 225W.
The central component of the protection circuit is a FET transistor linked to the power supply branch of the IRS2092 integrated circuit. When a positive voltage is applied to the transistor’s control electrode, the power supply ground voltage and the comparator halt the modulation process.
IRS2092 CLASS D AMPLIFIER CIRCUIT DIAGRAM LM1036 PREAMPLIFIER CIRCUIT DIAGRAM
The LM1036 is employed for preamplification and adjusting tonal sound elements such as balance, treble, and bass in the input stage of the Class D amplifier. This configuration is versatile and can be applied in various amplifier circuits housed on a separate PCB. The same flexibility applies to the rectification and power filtering stage.
COMPLETED CLASS D AMPLIFIER PROJECT
The IRS2092 is an advanced Class D audio amplifier driver equipped with a PWM modulator and protective features, designed for high voltage and high performance. When paired with two external MOSFETs and a handful of external components, it enables the creation of a fully functional Class D audio amplifier with built-in protection mechanisms.
Utilizing International Rectifier’s exclusive noise isolation technology, this design incorporates a high-current gate drive stage and a high-speed, low-noise error amplifier on a compact silicon die, streamlining the amplifier’s performance and efficiency.
Features
- Integrated analog input Class D audio amplifier driver in a small 16-pin package
- Floating inputs enable easy half-bridge implementation
- Programmable bidirectional over-current protection with self-reset function
- Programmable preset deadtime for improved THD performances
- Start and stop click noise reduction
- High noise immunity
- 100 V ratings deliver up to 500 W in output power
- Operates up to 800 kHz
- RoHS compliant
