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TPA3112D1PWPR データシート(PDF) 1 Page - Texas Instruments |
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TPA3112D1PWPR データシート(HTML) 1 Page - Texas Instruments |
1 / 27 page INP INN SD SD Fault Fault PLIMIT PLIMIT PVCC 8to26V 1uF OUTN FERRITE BEAD FILTER OUTP 25W 8Ω OUTN FERRITE BEAD FILTER FERRITE BEAD FILTER OUTP 8Ω OUT+ - OUT Audio Source TPA3112D1 GAIN0 GAIN0 GAIN1 GAIN1 TPA3112D1 www.ti.com SLOS654C – SEPTEMBER 2009 – REVISED JULY 2012 25-W FILTER-FREE MONO CLASS-D AUDIO POWER AMPLIFIER with SPEAKER GUARD™ Check for Samples: TPA3112D1 1 FEATURES DESCRIPTION 2 • 25-W into an 8- Ω Load at < 0.1% THD+N From The TPA3112D1 is a 25-W efficient, Class-D audio a 24-V Supply power amplifier for driving a bridge tied speaker. • 20-W into an 4- Ω Load at 10% THD+N From a Advanced EMI Suppression Technology enables the 12-V Supply use of inexpensive ferrite bead filters at the outputs • 94% Efficient Class-D Operation into 8- Ω Load while meeting EMC requirements. SpeakerGuard™ speaker protection system includes an adjustable Eliminates Need for Heat Sinks power limiter and a DC detection circuit. The • Wide Supply Voltage Range Allows Operation adjustable power limiter allows the user to set a from 8 to 26 V "virtual" voltage rail lower than the chip supply to limit • Filter-Free Operation the amount of current through the speaker. The DC detect circuit measures the frequency and amplitude • SpeakerGuard™ Speaker Protection Includes of the PWM signal and shuts off the output stage if Adjustable Power Limiter plus DC Protection the input capacitors are damaged or shorts exist on • Flow Through Pin Out Facilitates Easy Board the inputs. Layout The TPA3112D1 can drive a mono speaker as low as • Robust Pin-to-Pin Short Circuit Protection and 4 Ω. The high efficiency of the TPA3112D1, > 90%, Thermal Protection with Auto-Recovery Option eliminates the need for an external heat sink when • Excellent THD+N/ Pop Free Performance playing music. • Four Selectable, Fixed Gain Settings The outputs are fully protected against shorts to • Differential Inputs GND, VCC, and output-to-output. The short-circuit protection and thermal protection includes an auto- APPLICATIONS recovery feature. • Televisions • Consumer Audio Equipment Figure 1. Simplified Application Diagram 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 SpeakerGuard, PowerPad are trademarks of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2009–2012, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
同様の部品番号 - TPA3112D1PWPR |
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同様の説明 - TPA3112D1PWPR |
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