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TPA3112D1PWPR 데이터시트(PDF) 1 Page - Texas Instruments |
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TPA3112D1PWPR 데이터시트(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 SLOS654B – SEPTEMBER 2009 – REVISED AUGUST 2010 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 a 24-V Supply The TPA3112D1 is a 25-W efficient, Class-D audio 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™ Eliminates Need for Heat Sinks speaker protection system includes an adjustable • Wide Supply Voltage Range Allows Operation power limiter and a DC detection circuit. The from 8 to 26 V adjustable power limiter allows the user to set a "virtual" voltage rail lower than the chip supply to limit • Filter-Free Operation the amount of current through the speaker. The DC • SpeakerGuard™ Speaker Protection Includes detect circuit measures the frequency and amplitude Adjustable Power Limiter plus DC Protection of the PWM signal and shuts off the output stage if • Flow Through Pin Out Facilitates Easy Board the input capacitors are damaged or shorts exist on the inputs. Layout • Robust Pin-to-Pin Short Circuit Protection and The TPA3112D1 can drive a mono speaker as low as Thermal Protection with Auto-Recovery Option 4 Ω. The high efficiency of the TPA3112D1, > 90%, 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 APPLICATIONS auto-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 © 2009–2010, 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. |
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