Texas Instruments TPA1517NEEVM

Overview

TPA1517NEEVM from Texas Instruments is an evaluation module for the TPA1517NE thermally enhanced 20-pin PDIP stereo audio power amplifier IC. It delivers 6 W per channel into 4-Ω loads at 10% THD+N, features fixed 20 dB gain, mute/standby control via M/SB pin, and operates from 9.5 V to 18 V supply. Designed for compact audio systems including portable speakers and multimedia monitors.

For engineers reviewing the TPA1517NEEVM datasheet, TPA1517NEEVM pinout, TPA1517NEEVM application, or TPA1517NEEVM equivalent, this module enables rapid validation of thermal performance, output power delivery, mute/standby sequencing, and PCB layout compatibility with the TPA1517NE amplifier IC in real-world speaker drive scenarios.

Technical Context

The TPA1517NEEVM implements the reference design from TI's SLOS162D datasheet for the TPA1517NE amplifier, including dual-channel AC-coupled inputs, midrail SVRR bias network, PowerPAD-compatible ground plane layout (though NE package lacks PowerPAD), and discrete mute/standby switch interface. It supports both normal amplification and low-quiescent-current standby mode (ICC(SB) ≤100 µA).

Thermal management relies on the NE package's exposed copper heatsink terminals (GND/HS pins 1, 10–20), enabling direct PCB copper pour attachment. The board includes 470 µF bulk input capacitors, 2.2 µF output coupling caps, and 1 µF SVRR bypass, matching TI-recommended values for ≤6 W/channel operation into 4–8 Ω loads.

Key Specifications

Availability

TPA1517NEEVM is available at Aetrix Electronics and suitable for audio system prototyping, speaker driver qualification, and production-ready thermal validation requiring stable component supply and TI-validated reference design fidelity.

Supply support for TPA1517NEEVM 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 digital signal processing technologies since 1930.

The TPA1517NEEVM belongs to TI's Audio Amplifiers evaluation platform family, engineered to accelerate development of cost-sensitive, thermally constrained stereo audio systems using the TPA1517NE amplifier IC.

FAQ

What is the primary purpose of the TPA1517NEEVM?

The TPA1517NEEVM is a Texas Instruments evaluation module designed exclusively to demonstrate and validate the performance of the TPA1517NE 20-pin PDIP stereo audio power amplifier IC. It provides a fully assembled, tested PCB implementing TI's recommended circuit layout, component selection (including 470 µF CB, 2.2 µF CO, and 1 µF SVRR), and thermal grounding scheme for the NE package. Engineers use the TPA1517NEEVM to verify output power, THD+N, mute/standby behavior, and thermal dissipation before integrating the TPA1517NE into end products.

Does the TPA1517NEEVM support both channels independently?

Yes, the TPA1517NEEVM supports full independent operation of both amplifier channels as implemented in the TPA1517NE IC. It features separate input connectors for IN1 and IN2, dedicated output terminals for OUT1 and OUT2, and shared but decoupled power and ground paths. Each channel delivers up to 6 W into 4 Ω at 10% THD+N, with channel separation ≥58 dB measured per TI SLOS162D specifications. The board allows simultaneous or individual channel testing without crosstalk-induced measurement error.

How does the TPA1517NEEVM implement thermal management for the TPA1517NE IC?

The TPA1517NEEVM implements thermal management by directly connecting all 11 GND/HS terminals (pins 1 and 10–20) of the TPA1517NE IC to a large internal PCB copper pour, per TI's NE package thermal guidelines. This design maximizes heat transfer from the IC's die to the board, enabling sustained 6 W/channel operation within the -40°C to 85°C ambient range. Unlike the DWP PowerPAD variant, the NE package relies on these exposed heatsink pins rather than an underside thermal pad, and the TPA1517NEEVM's layout reflects that requirement precisely.

Can the TPA1517NEEVM be used to evaluate mute and standby functionality?

Yes, the TPA1517NEEVM includes a dedicated hardware toggle switch and a 3-pin header for the M/SB control signal (pin 8), enabling direct validation of both mute and standby modes per TI's specification. When the switch applies <2 V to M/SB, the TPA1517NE enters standby (ICC(SB) ≤100 µA); at 3.5–8.2 V, it mutes output while retaining bias (VO(M) ≤2 mV); above 9.3 V, it operates normally. The board's design prevents undefined voltage transitions to minimize audible pop during mode switching.

Is the TPA1517NEEVM compatible with other TPA1517 variants like the DWP package?

No, the TPA1517NEEVM is specifically designed for the TPA1517NE 20-pin PDIP package and is not mechanically or thermally compatible with the TPA1517DWP SO PowerPAD variant. The NE package uses through-hole mounting and 11 discrete GND/HS pins for heatsinking, whereas the DWP uses surface-mount soldering and an exposed thermal pad on the underside. The TPA1517NEEVM's footprint, pad layout, and copper pour geometry are optimized solely for the NE package - substituting the DWP would require complete PCB redesign and invalidates thermal and electrical validation.