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Infineon Technologies IRS20957S
Protected Digital Audio Driver with Floating PWM input in a 16-Lead SOIC Narrow Package
Overview
| Topology | Half-Bridge Converter symmetrical isolated |
| Switching frequency | 800 kHz |
| IC revision | 3 |
Description
The IRS20957S is a high voltage, high speed MOSFET driver with a floating PWM input designed for Class D audio amplifier applications.Bi-directional current sensing detects over current conditions during positive and negative load currents without any external shunt resistors. A built-in protection control block provides a secure protection sequence against over-current conditions and a programmable reset timer.The internal dead-time generation block enables accurate gate switching and optimum dead-time setting for better audio performance, such as lower THD and lower audio noise floor.
Features
- Floating PWM input enables easy half bridge implementation
- Programmable bidirectional over-current protection with self-reset function
- Programmable preset dead-time for improved THD performances
- High noise immunity
- 100V ratings deliver up to 500W in output power
- 3.3 V/ 5 V logic compatible input
- Operates up to 800kHz
Typical applications
- Class D Audio / General purpose audio power amplifiers
- Home theatre systems / Mini component stereo systems / Powered speaker systems
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ.(nm) | Emitting Color | λPeak typ.(nm) | IV typ.(mcd) | VF typ.(V) | Chip Technology | 2θ50% typ.(°) | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | Q(%) | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | Fl(mm) | Packaging | Pins | Mount | Working Voltage(V (AC)) | Z @ 100 MHz(Ω) | Zmax(Ω) | Test Condition Zmax | IR(mA) | Z @ 1 GHz(Ω) | H(mm) | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WL-SMCW SMT Mono-color Chip LED Waterclear, 470 nm, Blue | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]470 nm | Emitting ColorBlue | Peak Wavelength [typ.]465 nm | Luminous Intensity [typ.]145 mcd | Forward Voltage [typ.]3.2 V | Chip TechnologyInGaN | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | Size0805 | Operating Temperature -40 °C up to +85 °C | – | – | – | – | Length2 mm | Width1.25 mm | – | PackagingTape and Reel | – | MountSMT | – | – | – | – | – | – | Height0.7 mm | – | ||||
 | WE-MPSB EMI Multilayer Power Suppression Bead, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-MPSB EMI Multilayer Power Suppression Bead | – | – | – | – | – | – | – | – | – | – | Size0603 | Operating Temperature -55 °C up to +125 °C | – | – | – | – | Length1.6 mm | Width0.8 mm | Pad Dimension0.3 mm | – | – | MountSMT | – | Impedance @ 100 MHz60 Ω | Maximum Impedance99 Ω | Maximum Impedance458 MHz | Rated Current5100 mA | Impedance @ 1 GHz74 Ω | Height0.8 mm | TypeHigh Current | ||||
| WCAP-CSGP MLCCs 50 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | – | – | – | – | – | – | – | Capacitance47 pF | Capacitance±5% | Rated Voltage50 V (DC) | Size0805 | Operating Temperature -55 °C up to +125 °C | Q-Factor1000 % | – | Insulation Resistance10 GΩ | Ceramic TypeNP0 Class I | Length2 mm | Width1.25 mm | Pad Dimension0.5 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | Height0.6 mm | – | |||||
| WCAP-CSGP MLCCs 25 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | – | – | – | – | – | – | – | Capacitance1 µF | Capacitance±10% | Rated Voltage25 V (DC) | Size1206 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor3.5 % | Insulation Resistance0.5 GΩ | Ceramic TypeX7R Class II | Length3.2 mm | Width1.6 mm | Pad Dimension0.6 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | Height1.15 mm | – | |||||
| WCAP-CSGP MLCCs 25 V(DC), –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 25 V(DC) | – | – | – | – | – | – | – | Capacitance2.2 µF | Capacitance±10% | Rated Voltage25 V (DC) | Size1206 | Operating Temperature -55 °C up to +125 °C | – | Dissipation Factor3.5 % | Insulation Resistance0.2 GΩ | Ceramic TypeX7R Class II | Length3.2 mm | Width1.6 mm | Pad Dimension0.6 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | – | Height1.6 mm | – | |||||
 | WR-PHD Pin Header - Dual, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Dual | – | – | – | – | – | – | – | – | – | – | – | Operating Temperature -40 °C up to +105 °C | – | – | Insulation Resistance1000 MΩ | – | Length7.62 mm | – | – | PackagingBag | Pins6 | MountTHT | Working Voltage250 V (AC) | – | – | – | Rated Current3000 mA | – | – | TypeStraight | |||
 | WR-PHD Pin Header - Dual, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Dual | – | – | – | – | – | – | – | – | – | – | – | Operating Temperature -40 °C up to +105 °C | – | – | Insulation Resistance1000 MΩ | – | Length10.16 mm | – | – | PackagingBag | Pins8 | MountTHT | Working Voltage250 V (AC) | – | – | – | Rated Current3000 mA | – | – | TypeStraight |