IRS20957SPBF

Overview

The IRS20957SPBF is a high voltage, high speed MOSFET driver with a floating PWM input designed for Class D audio amplifier applications. It operates within a VCC supply range of 10V to 15V and supports offset voltages up to ±100V. The device features typical output currents of 1.0A source and 1.2A sink. Selectable dead-time options include 15ns, 25ns, 35ns, and 80ns. Typical propagation delays are 95ns for turn-on and 80ns for turn-off, with a maximum shutdown propagation delay of 250ns.

Feature Summary

• Floating PWM input enables easy half-bridge implementation
• Programmable bidirectional over-current protection with self-reset function
• Internal dead-time generation block for improved THD performance
• High noise immunity with logic compatible inputs

Applications

• Home theatre systems
• Mini component stereo systems
• Powered speaker systems
• General purpose audio power amplifiers

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and reel quantity. The SPBF designation indicates a tube/bulk standard pack configuration in the SOIC16N package. Confirm that the procurement channel provides original manufacturer packaging to ensure component authenticity and proper handling of moisture-sensitive devices.

Selection Notes

Select this component for designs requiring a dedicated gate driver for Class D audio topologies. Ensure the application utilizes a half-bridge configuration compatible with the floating input architecture. Verify that the system's operating temperature falls within the industrial qualification range and that the required dead-time settings align with the available programmable thresholds.

Part Context

This part belongs to the IRS20957 family of protected digital audio drivers manufactured by Infineon Technologies (formerly International Rectifier). It serves as a core control element in high-power audio amplifier reference designs, such as the IRAUDAMP6 evaluation board. The device integrates level shifting and protection logic specifically optimized for driving external power MOSFETs in audio applications.

Replacement Considerations

Public confirmed substitute part numbers: None identified.