Texas Instruments TPA3136D2EVM

Overview

TPA3136D2EVM from Texas Instruments is an evaluation module designed to demonstrate the TPA3136D2 10-W per channel stereo Class-D audio power amplifier IC in bridge-tied load (BTL) and parallel BTL (PBTL) configurations. It supports 4.5 V–14.4 V single-supply operation, delivers 10 W into 8 Ω in BTL mode, and includes configurable input modes (single-ended or differential), gain settings, and PLIMIT control for speaker protection.

For engineers reviewing the TPA3136D2EVM datasheet, TPA3136D2EVM pinout, TPA3136D2EVM application, or TPA3136D2EVM equivalent, this module enables rapid validation of audio output performance, thermal behavior, EMI filtering effectiveness, and Speakerguard™ protection features under real-world load conditions with minimal external circuitry.

Technical Context

The TPA3136D2EVM implements the full reference design for the TPA3136D2PWP IC in a PWP0028E 28-pin thermally enhanced HTSSOP package. It integrates all critical passive components-including 100 µF bulk capacitors (C2/C8), 1 µF ceramic decoupling (C1/C11/C15/C16/C24/C25), 0.22 µF output filter capacitors (C17–C20), and 330 pF/1000 pF C0G/NP0 compensation networks-to meet TI's recommended layout and stability criteria.

Board-level configuration is managed via five 2×1 shunt-jumpers (J6, J7, J10, J12, J13) enabling selection between BTL/PBTL output topologies, single-ended/differential input modes, auto-recovery fault handling, and programmable PLIMIT voltage adjustment using R6 (100 kΩ trimmer). Input signals are applied via RCA jacks (J4/J9), while outputs are accessed through binding posts (J1/J2/J3/J5/J8/J11).

Key Specifications

Availability

TPA3136D2EVM is available at Aetrix Electronics and suitable for audio system prototyping, Class-D amplifier validation, and speaker protection algorithm testing requiring stable component supply, traceable sourcing, and long-term evaluation board continuity.

Supply support for TPA3136D2EVM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, specializing in analog, embedded processing, and high-performance analog solutions for industrial, automotive, and consumer applications.

The TPA3136D2EVM belongs to TI's audio evaluation module product line, engineered specifically to accelerate development of efficient, filter-free Class-D amplifiers with integrated speaker protection for portable and mains-powered audio systems.

FAQ

What is the primary purpose of the TPA3136D2EVM?

The TPA3136D2EVM is a Texas Instruments evaluation module built around the TPA3136D2 stereo Class-D audio power amplifier IC. Its purpose is to provide a fully assembled, tested reference platform for validating amplifier performance-including output power, THD+N, efficiency, thermal behavior, and Speakerguard™ protection-in both BTL and PBTL configurations. Engineers use the TPA3136D2EVM to verify signal integrity, optimize PCB layout, and confirm compatibility with target speakers before final system integration.

Does the TPA3136D2EVM require multiple power supplies?

No, the TPA3136D2EVM operates from a single 4.5 V–14.4 V DC supply connected to the PVCC and GND banana jacks. This supply powers the TPA3136D2PWP IC's PVCC, AVCC, and logic rails-including shutdown (SD) and fault (FAULT) pull-up functions-eliminating the need for separate analog or digital supplies. The design leverages PVCC-compliant pin architecture to simplify bench testing and reduce external component count.

How do I configure the TPA3136D2EVM for mono PBTL operation?

To configure the TPA3136D2EVM for mono PBTL output, set J13 to OUT (enabling PBTL mode), connect the audio source to J9 (RIN), leave J4 (LIN) unconnected, and ensure J6 and J10 are set to IN for single-ended input. J12 must be set to IN for auto-recovery fault handling. This configuration combines both channels into a single 20 W output across one 4-Ω load, with differential output filtering maintained per TI's recommended layout.

Can the TPA3136D2EVM be used with 4-Ω speakers?

Yes, the TPA3136D2EVM supports 4-Ω loads in PBTL mode (20 W into 4 Ω) and is rated for 4-Ω operation in BTL mode at voltages >12 V per TI's specification table. The board includes appropriate output LC filters (L2–L6, C5–C28) and thermal design margin to sustain continuous operation into 4-Ω loads when powered within the 4.5 V–14.4 V range and with adequate heatsinking or airflow. Always observe absolute maximum ratings during testing.

Where can I find the schematic, BOM, and PCB layout for the TPA3136D2EVM?

The complete design documentation for the TPA3136D2EVM-including schematic (Figure 4), bill of materials (Table 5), top/bottom assembly drawings (Figures 2–3), and layout guidelines-is published in the official TI User's Guide SLOU444A (May 2016, revised May 2016). All files are freely available for download from the Texas Instruments product folder for TPA3136D2, ensuring full transparency for replication, modification, or compliance verification of the TPA3136D2EVM reference design.