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HomeProductsIntegrated Circuits (ICs)Linear - Amplifiers - AudioTPA3255DDVR
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TPA3255DDVR - Texas Instruments

Manufacturer Part Number
TPA3255DDVR
Manufacturer
Texas Instruments
Allelco Part Number
32D-TPA3255DDVR
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
7,732 pcs available, New & Original
Parts Description
IC AMP CLSS D STER 315W 44HTSSOP
Package
44-HTSSOP
Data sheet
TPA3255DDVR.pdf

PCN Design/Specification

Design 22/Feb/2022.pdf

PCN Assembly/Origin

Wafer Fab 11/Mar/2019.pdf

HTML Datasheet

TPA3255 Datasheet.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 7732
  • Unit Price: $2.848
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $2.848 $2.85
10+ $2.48 $24.80
30+ $2.263 $67.89
100+ $2.041 $204.10
500+ $1.94 $970.00
1000+ $1.894 $1,894.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

TPA3255DDVR Tech Specifications
Texas Instruments - TPA3255DDVR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - TPA3255DDVR

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Supply 18V ~ 53.5V
Type Class D
Supplier Device Package 44-HTSSOP
Series PurePath™
Package / Case 44-PowerTSSOP (0.244", 6.20mm Width)
Package Tape & Reel (TR)
Product Attribute Attribute Value
Output Type 2-Channel (Stereo)
Operating Temperature 0°C ~ 70°C (TA)
Mounting Type Surface Mount
Max Output Power x Channels @ Load 315W x 2 @ 4Ohm, 600W x 1 @ 2Ohm
Features Depop, Short-Circuit Protection
Base Product Number TPA3255

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN EAR99

Parts Introduction

TPA3255DDVR Image
TPA3255DDVR (1)

Manufacturer Part Number

TPA3255DDVR

Manufacturer

Texas Instruments

Introduction

High-performance Class-D audio power amplifier

Product Features and Performance

2-channel stereo operation

Supports high output power up to 315W x 2 at 4Ω or 600W x 1 at 2Ω

Wide supply voltage range from 18V to 53.5V

Integrated pop and click suppression (Depop)

Short-circuit protection

Product Advantages

Efficient Class-D topology for high power output

Wide supply voltage range for flexible design

Integrated protection features for reliable operation

TPA3255DDVR Image
TPA3255DDVR (2)

Key Technical Parameters

Output power: 315W x 2 @ 4Ω, 600W x 1 @ 2Ω

Supply voltage range: 18V to 53.5V

Operating temperature: 0°C to 70°C

Quality and Safety Features

RoHS3 compliant

Short-circuit protection

Compatibility

Surface mount package (44-HTSSOP)

Compatible with PurePath series

Application Areas

High-power audio amplification in home theater, professional audio, and automotive systems

Product Lifecycle

Current product, no discontinuation plans

Replacements and upgrades available within the PurePath series

Key Reasons to Choose This Product

High output power and efficiency with Class-D topology

Wide supply voltage range for flexible design

Integrated protection features for reliable operation

Compatibility with the PurePath series

Frequently Asked Questions(FAQ)

How does the TPA3255DDVR handle thermal management in high-power stereo applications at 4Ω per channel?
The TPA3255DDVR delivers up to 315W per channel into a 4Ω load, which generates significant heat under continuous operation. Its internal thermal shutdown circuitry activates at approximately 160°C junction temperature to prevent damage. In real-world designs, this requires careful PCB layout with adequate copper area for heat dissipation and often external heatsinking, especially when driving low-impedance loads or operating near the upper end of its 70°C ambient temperature range. Without proper thermal design, sustained output levels can be limited by overheating before reaching full rated power.
What are the key differences between using the TPA3255DDVR in stereo versus bridged mono mode for a 2Ω load?
In stereo mode, the TPA3255DDVR delivers 315W per channel into 4Ω, but into a 2Ω load, each channel drops to around 600W total (not independently rated), with the device effectively operating as two separate amplifiers. In bridged mono mode, both channels are combined to deliver up to 600W into a single 2Ω speaker. This configuration increases output voltage swing and current delivery but reduces channel count. Bridging requires careful matching of load impedance and ensures that the speaker's voltage rating exceeds twice the supply voltage minus headroom, which may not always be feasible with standard commercial speakers.
Can the TPA3255DDVR operate reliably in automotive environments despite its industrial temperature specification?
While the TPA3255DDVR is specified for 0°C to 70°C ambient operation, automotive applications often exceed this range due to engine bay proximity or direct sunlight exposure. Although it includes robust features like short-circuit protection and depop circuitry, prolonged operation above 70°C risks triggering thermal shutdown or accelerating degradation. For automotive use, additional thermal derating, conformal coating, and isolation from hot zones are recommended. It is not inherently qualified to AEC-Q100 unless explicitly tested and marked as such by Texas Instruments.
How should input coupling capacitors be selected when interfacing analog audio sources with the TPA3255DDVR?
The TPA3255DDVR uses internally generated charge pumps and requires AC-coupled inputs for most audio sources to block DC offset. Input coupling capacitors must have sufficient capacitance—typically 1µF to 10µF—and low ESR to avoid attenuation of low-frequency signals. X7R or C0G dielectric types are preferred for stability across temperature and voltage variations. Capacitor selection must also consider the amplifier’s input bias current and ensure minimal signal loss below 20Hz, especially in subwoofer or line-level applications where bass fidelity matters.
What precautions are necessary when enabling the depop feature on the TPA3255DDVR during startup and shutdown sequences?
The depop feature suppresses audible "thump" noise during power-up and power-down by slowly ramping input signals rather than enabling the output abruptly. However, improper implementation—such as bypassing the soft-start circuit or using non-ideal control logic—can lead to transient distortion or instability. Designers should ensure that the EN pin is controlled with a clean, slow ramp (e.g., via an RC network) and that the feedback loop remains stable throughout the transition. Skipping this step may compromise audio quality in sensitive listening environments.
Is it safe to operate the TPA3255DDVR near its maximum supply voltage of 53.5V without compromising reliability?
Operating close to 53.5V requires caution due to increased stress on internal MOSFETs and switching nodes. While the device includes overvoltage protection, sustained operation near the upper limit accelerates electromigration and gate oxide wear. Real-world testing shows acceptable longevity at 50V with proper heatsinking, but margins should be maintained for surge events or voltage transients common in battery-powered systems. Additionally, output power decreases slightly at higher voltages due to reduced efficiency, so system-level power budgets must account for this trade-off.
How does the TPA3255DDVR compare to the TPA3110D2 in terms of power density and thermal performance?
The TPA3255DDVR offers higher output power (up to 600W mono into 2Ω) compared to the TPA3110D2’s typical 250W into 4Ω, but it dissipates significantly more power internally due to higher conduction losses. At equal load conditions, the TPA3255DDVR runs hotter unless provided with superior thermal management. The TPA3110D2 benefits from a smaller package and simpler layout, making it suitable for space-constrained, lower-power designs. Choosing between them involves balancing power requirements against available board area and cooling capability.
What impact does PCB trace inductance have on the performance of the TPA3255DDVR in high-current switching applications?
High-current switching transitions in Class D amplifiers generate fast dv/dt and di/dt spikes, which can couple noise into nearby traces via parasitic inductance. On the TPA3255DDVR, poor grounding or long power traces increase EMI and risk false triggering of protection circuits. Minimizing loop areas for high-current paths—especially between output stage, bulk capacitor, and load—is critical. Using multiple vias and placing decoupling capacitors within 2mm of the IC pads further reduces inductive ringing and improves overall stability.
Can the TPA3255DDVR be used in multi-channel audio systems requiring synchronized timing across stages?
The TPA3255DDVR lacks native inter-stage synchronization pins, making it challenging to achieve precise phase alignment with other amplifiers in multi-zone setups. While external clock distribution can mitigate skew, the lack of dedicated sync input means designers must rely on software-level buffering or sample rate converters to maintain coherence. This limitation becomes problematic in surround sound or distributed audio systems where timing mismatches introduce audible artifacts or imaging errors.
How does the Moisture Sensitivity Level (MSL) of 3 for the TPA3255DDVR affect reflow soldering processes?
With an MSL of 3, the TPA3255DDVR must be baked if stored beyond 168 hours after opening the moisture barrier. During reflow, peak temperatures should not exceed 260°C for more than 10 seconds to prevent delamination of the HTSSOP package. Manufacturers typically recommend limiting floor life to 168 hours and baking at 125°C for 24 hours if humidity exposure exceeds threshold. Failure to adhere to these guidelines risks popcorning during reflow, leading to catastrophic failure or intermittent faults.
What role do output filtering inductors play in optimizing efficiency and audio fidelity with the TPA3255DDVR?
The TPA3255DDVR integrates output filters to reduce EMI and eliminate RF interference from switching edges. Inductor values are typically chosen based on desired cutoff frequency and load impedance—commonly 1µH to 4.7µH for 4Ω loads. Larger inductors improve THD+N but increase size and cost; smaller ones save space but may degrade transient response. Proper selection balances efficiency (>90% at full load), harmonic suppression, and speaker protection during overloads or short circuits.
Are there any limitations when using the TPA3255DDVR with capacitive loads such as piezo tweeters?
Yes, the TPA3255DDVR is designed primarily for resistive loads (4Ω minimum). Driving capacitive loads—like unprotected piezo elements—risks instability due to phase lag and potential oscillation. Texas Instruments does not guarantee stability with purely capacitive impedances, and empirical testing shows degraded performance or even self-oscillation above certain capacitance thresholds. If capacitive loading is unavoidable, additional series resistance or damping networks are strongly advised, though this sacrifices some high-frequency response.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments TPA3255DDVR

Product Attribute TPA3255DDVR TPA3255CFDDVR TPA3255BDDDVR TPA3251D2DDVR
Part Number TPA3255DDVR TPA3255CFDDVR TPA3255BDDDVR TPA3251D2DDVR
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Package / Case 44-PowerTSSOP (0.244", 6.20mm Width) 44-PowerTSSOP (0.244", 6.20mm Width) 44-PowerTSSOP (0.244", 6.20mm Width) 44-PowerTSSOP (0.244", 6.20mm Width)
Type Class D Class D Class D Class D
Features Depop, Short-Circuit Protection - - Depop, Short-Circuit and Thermal Protection
Max Output Power x Channels @ Load 315W x 2 @ 4Ohm, 600W x 1 @ 2Ohm 605W x 1 @ 3Ohm; 315W x 2 @ 4Ohm 605W x 1 @ 3Ohm; 315W x 2 @ 4Ohm 220W x 2 @ 3Ohm
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Operating Temperature 0°C ~ 70°C (TA) 0°C ~ 125°C (TJ) 0°C ~ 125°C (TJ) 0°C ~ 70°C (TA)
Base Product Number TPA3255 - - TPA3251
Supplier Device Package 44-HTSSOP 44-HTSSOP 44-HTSSOP 44-HTSSOP
Output Type 2-Channel (Stereo) 1-Channel (Mono) or 2-Channel (Stereo) 1-Channel (Mono) or 2-Channel (Stereo) 2-Channel (Stereo)
Voltage - Supply 18V ~ 53.5V 10.8V ~ 13.2V, 18V ~ 53.5V, 18V ~ 56.5V 10.8V ~ 13.2V, 18V ~ 53.5V, 18V ~ 56.5V 12V ~ 36V
Package Tape & Reel (TR) Bulk Bulk Tape & Reel (TR)
Series PurePath™ PurePath™ PurePath™ PurePath™

TPA3255DDVR Datasheet PDF

Download TPA3255DDVR pdf datasheets and Texas Instruments documentation for TPA3255DDVR - Texas Instruments.

PCN Design/Specification
Design 22/Feb/2022.pdf
PCN Assembly/Origin
Wafer Fab 11/Mar/2019.pdf
HTML Datasheet
TPA3255 Datasheet.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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TPA3255DDVR Image

TPA3255DDVR

Texas Instruments
32D-TPA3255DDVR

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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