IRS20965SPBF

Overview

The IRS20965SPBF is a high voltage, high speed MOSFET driver with floating PWM inputs designed for Class D audio amplifier applications. It features independent Hi-side and Lo-side floating PWM inputs, programmable bidirectional over-current detection with self-reset function, and shoot-through prevention logic. The device operates up to 800 kHz and delivers ±100 V ratings to support output power up to 500 W. It includes a 5V reference output for setting the OCSET threshold and is compatible with 3.3 V or 5 V logic inputs.

Feature Summary

• Independent HIN and LIN inputs provide separate control for HO and LO outputs.
• Bi-directional current sensing utilizes MOSFET RDS(ON) to detect over-current conditions without external shunt resistors.
• Internal shoot-through prevention logic ensures safe operation by eliminating simultaneous ON states in the output MOSFETs.

Applications

• Class D audio amplifier
• Half bridge converter with digital controller

Procurement Notes

Verify the specific ordering suffix 'SPBF' corresponds to the Tube/Bulk packaging format containing 45 units per standard pack. Confirm that the component meets Industrial qualification standards and RoHS compliance requirements before finalizing procurement specifications.

Selection Notes

Select this component when designing single-channel Class D amplifiers requiring high-voltage floating gate drive capabilities. Ensure the application supports the recommended low-side supply voltage range of 10 V to 15 V and the operating temperature range from -40°C to 125°C.

Part Context

This part belongs to the IRS20965 family of high-performance D-class audio amplifier drivers. It is manufactured by Infineon Technologies (formerly International Rectifier). The SPBF designation indicates a lead-free, non-lead-free released variant packaged in a 16-Lead SOIC housing.

Replacement Considerations

IRS20965STRPBF serves as a direct functional substitute, offering identical electrical characteristics but supplied in Tape and Reel packaging rather than tubes.

FAQ

How does the IRS20965SPBF handle over-current protection?

It uses bi-directional current sensing via the MOSFET's RDS(ON) to detect over-current conditions. An over-current flag output provides status without shutting down, allowing full external control over protection sequences.

What is the maximum switching frequency supported by this driver?

The IRS20965SPBF is designed to operate at frequencies up to 800 kHz.