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The TPA3111D1 device is a 10-W, efficient, Class-D audio power amplifier for driving a bridge tied speaker. Advanced EMI suppression technology enables the use of inexpensive ferrite bead filters at the outputs while meeting EMC requirements. SpeakerGuard speaker protection system includes an adjustable power limiter and a DC detection circuit. The adjustable power limiter lets the user to set a virtual voltage rail lower than the chip supply to limit the current through the speaker. The DC Detect circuit measures the frequency and amplitude of the PWM signal and shuts off the output stage if the input capacitors are damaged or shorts exist on the inputs.
The TPA3111D1 can drive a mono speaker as low as 4 Ω. The high efficiency of the TPA3111D1, >90%, eliminates the requirement for an external heat sink when playing music.
The outputs are fully protected against shorts to GND, VCC, and output-to-output. The short-circuit protection and thermal protection includes an auto-recovery feature.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPA3111D1 10-W Filter-Free Mono Class-D Audio Power Amplifier With Speaker Guard™ datasheet (Rev. F) | PDF | HTML | 11 Aug 2016 |
| Application note | Using Thermal Calculation Tools for Analog Components (Rev. A) | 30 Aug 2019 | ||
| Application note | Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) | 26 Aug 2019 | ||
| Application note | AN-1849 An Audio Amplifier Power Supply Design (Rev. C) | 27 Jun 2019 | ||
| Application note | AN-1737 Managing EMI in Class D Audio Applications (Rev. A) | 01 May 2013 | ||
| EVM User's guide | TPA3111D1EVM Audio Amplifier Evaluation Board User's Guide (Rev. A) | 07 Jul 2010 |
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The TPA3111D1 evaluation module consists of a single 10-W, Class-D, mono audio power amplifier complete with a small number of external components mounted on a circuit board that can be used to directly drive a speaker with an external analog audio source as the input. The EVM’s default output (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HTSSOP (PWP) | 28 | Ultra Librarian |
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