TPA3111D1

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10-W mono, 8- to 26-V supply, analog input Class-D audio amplifier w/ filter free & SpeakerGu

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Product details

Parameters

Audio input type Analog Input Architecture Class-D Speaker channels (Max) Mono Power stage supply (Max) (V) 26 Power stage supply (Min) (V) 8 Load (Min) (ohms) 4 Output power (W) 10 SNR (dB) 102 THD + N @ 1 kHz (%) 0.05 Iq (Typ) (mA) 10 Control interface Hardware Closed/open loop Closed Analog supply (Min) (V) 8 Analog supply (Max) (V) 26 PSRR (dB) 70 Operating temperature range (C) -40 to 85 open-in-new Find other Speaker amps

Package | Pins | Size

HTSSOP (PWP) 28 43 mm² 4.4 x 9.7 open-in-new Find other Speaker amps

Features

  • 10-W into an 8-Ω Load at 10% THD+N From a 12-V Supply
  • 7-W into an 4-Ω Load at 10% THD+N From a 8-V Supply
  • 94% Efficient Class-D Operation into 8-Ω Load Eliminates Need for Heat Sinks
  • Wide Supply Voltage Range Allows Operation from 8 to 26 V
  • Filter-Free Operation
  • SpeakerGuard™ Speaker Protection Includes Adjustable Power Limiter Plus DC Protection
  • Flow-Through Pinout Facilitates Easy Board Layout
  • Robust Pin-to-Pin Short-Circuit Protection and Thermal Protection With Auto-Recovery Option
  • Excellent THD+N and Pop-Free Performance
  • Four Selectable, Fixed Gain Settings
  • Differential Inputs
  • APPLICATIONS
    • Televisions
    • Monitors and Laptops
    • Consumer Audio Equipment

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Description

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.

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Technical documentation

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Type Title Date
* Data sheet TPA3111D1 10-W Filter-Free Mono Class-D Audio Power Amplifier With Speaker Guard™ datasheet (Rev. F) Aug. 11, 2016
Application note Using Thermal Calculation Tools for Analog Components (Rev. A) Aug. 30, 2019
Application note Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) Aug. 26, 2019
Application note AN-1849 An Audio Amplifier Power Supply Design (Rev. C) Jun. 27, 2019
Application note AN-1737 Managing EMI in Class D Audio Applications (Rev. A) May 01, 2013
User guide TPA3111D1EVM Audio Amplifier Evaluation Board User's Guide (Rev. A) Jul. 07, 2010

Design & development

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Hardware development

EVALUATION BOARD Download
document-generic User guide
149
Description

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 (...)

Features
  • Greater Than 90% Efficient Class-D Operation
  • Support for Filter-Free Operation
  • SpeakerGuard™ Speaker Protection circuitry
  • Four Selectable, Fixed Gain Settings
  • Wide Operating Voltage: 8 V - 26 V
  • Thermal and Short Circuit Protection with Auto Recovery Feature

Design tools & simulation

SIMULATION MODEL Download
SLAM054A.TSC (257 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SLAM055A.ZIP (13 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SLOM329B.ZIP (21 KB) - PSpice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 28 View options

Ordering & quality

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