IRS2092STRPBF Integrated Circuits (ICs)

Introduction

The IRS2092STRPBF is a monolithic integrated circuit with two high-voltage, high-current N-channel MOSFETs. It is specifically designed for high performance audio frequency amplifier applications, especially for high output power class D amplifiers. This device operates from a single power supply, reducing system cost and complexity.

Application Field and Working Principle

The IRS2092STRPBF is designed to be used as a stereo power amplifier for professional and consumer audio devices. Using this device, a class D power amplifier can be created that offers superior power efficiency, superior audio performance and superior thermal performance. This device is capable of delivering a continuous RMS output power of up to 2×250 W into a 4Ω load with a ±55 V dual power supply, while operating at a switching frequency of up to 650 kHz.

The IRS2092STRPBF is based on an H-bridge topology that uses two high-voltage, high-current N-channel MOSFETs to drive the output stage. In this configuration, a pair of complementary outputs is used to switch the + and – output voltage rails. The control signals for the outputs are generated by a PWM modulator, which is operated by a high-precision clock oscillator. The PWM modulator generates the output control signals in accordance with the input signal applied. The output power is varied in accordance with the output control signals generated by the modulator.

Thermal Performance and Design

The thermal performance of the IRS2092STRPBF is enhanced by its design. Its internal circuitry uses features such as a low ESR output capacitors, high efficiency, adaptive dead-time control and a thermally-stable design that allows excellent thermal performance. Moreover, a low RDS(on) MOSFET is used to reduce power losses, while a thermistor protection is used to provide additional protection against excessive power dissipation conditions.

The device is also protected against short-circuit and over-current conditions, thanks to its integrated short-circuit protection control, over-current protection control and under-voltage protection control. The built-in thermal protection limits the maximum junction temperature to prevent any potential damage.

Conclusion

The IRS2092STRPBF is a highly-integrated device designed for use in audio frequency amplifiers, with an emphasis on delivering excellent power efficiency, superior audio performance and superior thermal performance. It is based on an H-bridge topology, and its precise internal circuitry allows for excellent thermal and power efficiencies. This device also includes a number of protection features, such as short-circuit protection, over-current protection and thermal protection.