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TPA3118D2DAP

TITPA3118D2DAP

Texas Instruments
Amplifier IC 2-Channel (Stereo) Class D 32-HTSSOP
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Overview

The TPA3118D2DAP is a high-efficiency Class-D stereo audio amplifier from Texas Instruments capable of delivering 30W per channel into 8-ohm loads. It operates across a wide supply voltage range from 4.5V to 26V and features advanced modulation schemes to minimize electromagnetic interference. This device is designed with a feedback power-stage architecture that provides high PSRR, reducing the need for complex power supply filtering.

Why Choose This Part

The TPA3118D2DAP offers 1.2-MHz switching frequency with AM avoidance to prevent interference with radio tuners. It includes comprehensive self-protection features such as DC-detect, overtemperature, and short-circuit protection with error reporting. Its filter-free modulation and high PSRR architecture significantly reduce external component count and simplify PCB layout.

Applications

Consumer Audio Systems
Ideal for bookshelf speakers, soundbars, and powered subwoofers requiring high-efficiency stereo amplification.
Public Address Equipment
Used in distributed audio systems where thermal efficiency and short-circuit protection are critical for reliability.
Televisions and Monitors
Integrated into flat-panel displays where space is limited and low heat dissipation is necessary.
Battery-Powered Speakers
The high efficiency and 50uA shutdown current make it suitable for portable, battery-operated audio devices.

Key Specifications

Type Class D
Features Differential Inputs, Mute, Short-Circuit and Thermal Protection, Shutdown
Output Type 2-Channel (Stereo)
Mounting Type Surface Mount
Package / Case 32-PowerTSSOP (0.240", 6.10mm Width)
Voltage - Supply 4.5V ~ 26V
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 32-HTSSOP
Max Output Power x Channels @ Load 30W x 2 @ 8Ohm

Getting Started

To evaluate this IC, utilize the TPA3118D2EVM evaluation module which provides a complete reference layout and heat dissipation design. Ensure the PowerPAD on the 32-HTSSOP package is properly soldered to a large copper ground plane for thermal management. Use the SD (shutdown) and FAULT pins for system-level control and monitoring via a microcontroller.

TPA3118D2 Family

Part NumberDifferenceStock
TPA3118D2EVM EVM 5

Also Consider

TPA3116D2 TITexas Instruments - Higher power alternative capable of 50W per channel for applications requiring more headroom.
TPA3110D2 TITexas Instruments - Lower power 15W per channel version for smaller speaker systems and budget-sensitive designs.