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IRS20954STRPBF Datasheet(PDF) 1 Page - International Rectifier |
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IRS20954STRPBF Datasheet(HTML) 1 Page - International Rectifier |
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1 / 25 page  www.irf.com 1 IRS20954S Protected Digital Audio Driver Features • Floating PWM input enables easy half bridge implementation • Integrated programmable bi-directional over-current protection with self-reset function • Programmable compensated preset deadtime for improved THD performances • High noise immunity • ±100 V high voltage ratings deliver up to 500 W output power • 3.3 V / 5 V logic compatible input • Operates up to 800 kHz • RoHS compliant Description The IRS20954 is a high voltage, high speed MOSFET driver with floating PWM input, specially designed for Class D audio amplifier applications. The bi-directional current sensing requires no external shunt resistors. It can capture over-current conditions at either positive or negative load current direction. A built-in control block provides secure protection sequence against over-current conditions, including a programmable reset timer. The internal deadtime generation block provides accurate gate switch timing and enables optimum deadtime settings for better audio performances, such as THD and audio noise floor. Product Summary VOFFSET (max) ± 100 V Io+ 1.0 A Gate driver Io - 1.2 A Selectable Deadtime 15 ns, 25 ns, 35 ns, 45 ns Propagation delay 90 ns OC protection delay 1 µs (max) Package Typical Connection (Please refer to Lead Assignments for correct pin configuration. This diagram shows electrical connections only) Data Sheet No. PD60276 IRS 20954S 12V VDD IN CSD VSS COM OCSET LO VCC HO VS DT CSH VB -B Vcc Speaker +B PWM VREF NC NC 16-Lead SOIC (narrow body ) |
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