Texas Instruments SLOU121 manual Depop Circuitry, BTL Operation, Single-Ended Operation

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The TPA6011A4 Audio Power Amplifier Evaluation Module

3.2.5Depop Circuitry

The TPA6011A4 amplifier IC contains internal circuitry to minimize the various transients that might appear at the output during the transition from power off or shutdown to normal operation, or when transitioning between the SE and BTL modes.

3.2.6BTL Operation

To operate in the bridge-tied load output mode, the module SE/BTL control input terminal must be held low. The module output signal from OUT+ must go through the speaker load and be returned directly to OUT–, and NOT to system ground. This requires that the OUT– line be isolated not only from system ground, but also from the OUT– lines of any other amplifiers in the system. The platform provides such isolated output lines from the amplifier EVM sockets directly to separate left and right speaker connectors.

3.2.7Single-Ended Operation

For single-ended operation, the module SE/BTL control input pin must be held high. The speaker (or headphone) load is connected to the module OUT+ output pin through a coupling capacitor, and to platform/system ground. A 470 -∝F electrolytic coupling capacitor is provided on the platform in the signal path to the headphone output jack for this purpose, and a control signal from the platform headphone jack can be routed to the module control input pin to switch the TPA6011A4 IC to the single-ended mode.

In the single-ended mode, the amplifiers inside the TPA6011A4 IC that drive the OUT– lines do not operate and do not dissipate any power. The OUT– pins go into a high-impedance state and can be left connected or allowed to float.

Details 3-9

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Contents User’s Guide Important Notice EVM Important Notice EVM Warnings and Restrictions Information About Cautions and Warnings Read This FirstRelated Documentation From Texas Instruments Contents Tables FiguresIntroduction Feature Highlights Description TPA6011A4 EVM SpecificationsIntroduction EVM JP6 JP7 Quick StartPower PrecautionsPlatform Preparations Quick Start List for PlatformModule Preparation Typical TPA6011A4 EVM Jumper Settings Quick Start Module Map Quick Start List for Stand-AloneControl Inputs Quick Start Quick Start Details TI Plug-N-Play Audio Amplifier Evaluation Platform TPA6011A4 EVM TPA6011A4 Audio Power Amplifier Evaluation Module1 TPA6011A4 Audio Amplifier IC TPA6011A4 EVM Schematic DiagramInputs and Gain Volume ControlBlock Diagram of SE Volume Control DC Volume Control BTL Mode, VDD = 5 Differential Input Single-Ended Operation Depop CircuitryBTL Operation 2 TPA6011A4 Module Jumper Settings and Switches Installing and Removing EVM BoardsEVM Insertion EVM Removal2.2 J1 Output Mode Jumper 2.1 S1 Shutdown Switch2.3 J2 Input Mode Jumper Signal Routing2.4 J3 Input and Output Mode Jumper 2.5 J4 Fade Mode JumperHeadphone Output Jack Signal ConditioningMute Shutdown/Mode Mute/Mode Polarity Select JP8 Headphone Jack Control SignalsMute/Mode Select JP6 Power Requirements Outputs Inputs and OutputsInputs 1 TPA6011A4 EVM Connected for BTL Output Using the TPA6011A4 EVM Stand-Alone11. TPA6011A4 EVM Connected for Stereo Single-Ended Output 2 TPA6011A4 EVM Connected for Single-Ended OutputReference Reference TPA6011A4 EVM Layers and Board SchematicTPA06011A4 EVM Schematic Diagram TPA6011A4 EVM Parts List TPA6011A4 EVM Parts List

SLOU121 specifications

Texas Instruments SLOU121 is a comprehensive technical document that serves as a guide for the evaluation and implementation of various TI products. This document highlights the operational capabilities, design considerations, and practical applications of TI’s semiconductor solutions, with a focus on enabling engineers and designers to optimize their designs effectively.

One of the main features of SLOU121 is its emphasis on performance. It provides detailed specifications and operational data that help users understand the key parameters of TI products, such as voltage levels, current ratings, and thermal characteristics. This information is crucial for engineers as they design circuits that require precision and reliability.

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In addition to technical specifications, the document provides guidance on practical implementation strategies. This includes best practices for layout design, thermal management, and component selection. By incorporating these recommendations, engineers can mitigate potential issues during the design phase and ensure that their final products meet or exceed performance expectations.

Overall, Texas Instruments SLOU121 is an essential resource that combines technical knowledge with practical advice, helping engineers to leverage TI technologies for innovative product development. By providing a thorough understanding of features, technologies, and recommendations, SLOU121 equips designers with the necessary tools to create high-performance electronic solutions.
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