IRS20957STRPBF

Overview

The IRS20957STRPBF 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 range of 10V to 15V and supports up to 800kHz switching frequencies. The device features ±100V ratings capable of delivering up to 500W output power. It includes programmable bidirectional over-current protection with a self-reset function and selectable dead-time settings of 15ns, 25ns, 35ns, or 80ns. The component is housed in a 16-pin SOIC package.

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 optimum audio performance

Applications

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

Procurement Notes

Verify the ordering suffix 'RPBF' corresponds to the Tape and Reel packaging format containing 2500 units per reel. Confirm that the base part number IRS20957S matches the specific functional requirements for your design. Ensure compliance with RoHS standards as indicated by the PBF designation. Cross-reference the datasheet revision history to confirm the version aligns with your manufacturing specifications.

Selection Notes

Select this component when designing Class D audio amplifiers requiring a single-channel half-bridge driver. It is suitable for applications needing high noise immunity and logic compatibility with 3.3V or 5V inputs. Consider its capability to handle high offset voltages and its integrated protection mechanisms against over-current conditions without external shunt resistors.

Part Context

This component belongs to the IRS2095 series of protected digital audio drivers manufactured by Infineon Technologies (formerly International Rectifier). It is specifically engineered for high-performance audio applications where precise gate driving and robust protection are critical. The series offers scalable solutions for various Class D amplifier topologies.

Replacement Considerations

IRS20954SPBF

FAQ

How is the dead-time configured?

The dead-time is programmable via the DT pin, allowing selection between 15ns, 25ns, 35ns, and 80ns based on the voltage level applied.

Does the device require external shunt resistors for over-current detection?

No, the IRS20957S utilizes bi-directional current sensing to detect over-current conditions during positive and negative load currents without any external shunt resistors.