TPA3250

ACTIVE

70-W stereo, 140-W mono, 12- to 38-V supply, analog input Class-D audio amplifier, pad-down

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Product details

Parameters

Audio input type Analog Input Architecture Class-D Speaker channels (Max) 4 Power stage supply (Max) (V) 36 Power stage supply (Min) (V) 12 Load (Min) (ohms) 1.5 Output power (W) 130 SNR (dB) 110 THD + N @ 1 kHz (%) 0.005 Iq (Typ) (mA) 12.5 Control interface Hardware Closed/open loop Closed Analog supply (Min) (V) 10.8 Analog supply (Max) (V) 13.2 Power to parallel bridge tied load (Max) (W) 189 PSRR (dB) 60 Operating temperature range (C) 0 to 70 open-in-new Find other Speaker amps

Package | Pins | Size

HTSSOP (DDW) 44 85 mm² 14 x 6.1 open-in-new Find other Speaker amps

Features

  • Differential Analog Inputs
  • Total Output Power at 10%THD+N
    • 70-W Stereo Continuous into 8 Ω in BTL
      Configuration at 32 V
    • 130-W Stereo Peak into 4 Ω in BTL
      Configuration at 32 V
  • Total Output Power at 1%THD+N
    • 60-W Stereo Continuous into 8 Ω in BTL
      Configuration at 32 V
    • 105-W Stereo Peak into 4 Ω in BTL
      Configuration at 32 V
  • Advanced Integrated Feedback Design with High-
    speed Gate Driver Error Correction
    (PurePath™ Ultra-HD)
    • Signal Bandwidth up to 100 kHz for High
      Frequency Content From HD Sources
    • Ultra Low 0.005% THD+N at 1 W into 4 Ω
      and <0.01% THD+N to Clipping
    • 60 dB PSRR (BTL, No Input Signal)
    • <60 µV (A-Weighted) Output Noise
    • >110 dB (A Weighted) SNR
  • Multiple Configurations Possible:
    • Stereo, Mono, 2.1 and 4xSE
  • Click and Pop Free Startup and Stop
  • 92% Efficient Class-D Operation (8 Ω)
  • Wide 12-V to 36-V Supply Voltage Operation
  • Self-Protection Design (Including Undervoltage,
    Overtemperature, Clipping, and Short Circuit
    Protection) With Error Reporting
  • EMI Compliant When Used With Recommended
    System Design
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Description

The TPA3250 device is a high performance class-D power amplifier that enables true premium sound quality with class-D efficiency. It features an advanced integrated feedback design and proprietary high-speed gate driver error correction (PurePath™ Ultra-HD). This technology allows ultra low distortion across the audio band and superior audio quality. With a 32V power supply the device can drive up to 2 × 130 W peak into 4-Ω load and 2 × 70 W continuous into 8-Ω load and features a 2 VRMS analog input interface that works seamlessly with high performance DACs such as TI’s PCM5242. In addition to excellent audio performance, TPA3250 achieves both high power efficiency and very low power stage idle losses below 1 W. This is achieved through the use of 60 mΩ MOSFETs and an optimized gate driver scheme that achieves significantly lower idle losses than typical discrete implementations.

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Similar but not functionally equivalent to the compared device:
TPA3156D2 ACTIVE 70-W stereo, 140-W mono, 4.5- to 26-V, analog input Class-D audio amplifier w/ low idle current For an analog-input, Class-D amplifier with comparable output power and up to 70-W stereo, see the TPA3156D2.

Technical documentation

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No results found. Please clear your search and try again. View all 11
Type Title Date
* Datasheet TPA3250 70-W Stereo, 130-W peak PurePath™ Ultra-HD Pad Down Class-D Amplifier datasheet (Rev. A) Apr. 20, 2016
Application notes TPA324x and TPA325x Post-Filter Feedback (Rev. A) Mar. 07, 2018
More literature High-Power Audio Amplifiers TPA322x/4x/5x Dec. 01, 2017
Application notes Multi-Device Configuration for TPA32xx Amplifiers Sep. 27, 2017
More literature TI Automotive External Amplifiers (Rev. A) Feb. 03, 2017
More literature TI Powered Speakers (Rev. A) Jan. 31, 2017
Application notes Class-D Amplifier External Load Diagnostics Jan. 23, 2017
Application notes LC Filter Design (Rev. A) Nov. 09, 2016
Application notes TPA32xx Analog Input Grounding for Single Ended Inputs Aug. 26, 2016
More literature High-Power Audio Amplifiers Jul. 14, 2016
User guides TPA3250D2 Evaluation Module User's Guide Dec. 02, 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
Guitar SideGig Plug-In Module
SIDEGIG-GUITAREVM
document-generic User guide
$49.00
Description

The TI Guitar SideGig plug-in module turns TI Audio Class-D amplifier EVM’s into a guitar, bass or musical instrument amplifier. The board features selectable “clean” and “drive” channels for traditional and overdriven guitar sounds. The clean channel offers volume (...)

Features
  • Connects to TI Class-D Amplifier EVMs with the Audio Interface Board (AIB) connector
  • Drive channel adds drive, tone and level controls
  • Clean Channel with treble, middle, bass and volume controls
  • Supports one BTL channel or PBTL Class-D amplifier output
  • Input: ¼” mono input jack for musical instruments
  • (...)
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description
The TI Prototype Audio Plug-in Module turns TI Audio Class-D amplifier EVM’s into your sandbox. Need to prototype a pre-amplifier circuit or test an opamp with TI Class-D EVMs, then start with the DIY Audio Plug-in Module.

Start your prototype on the included breadboard or solder directly to the PCB (...)
Features
  • Compatible with TI Audio Plug-in Module Ecosystem
  • Prototype using either the included breadboard or perf-board dot pattern
  • Class-D Input and Outputs provided on a 100 mil header
  • Connect to TI Class-D Audio EVMs (Check compatibility)
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description
The TI Analog, Active Crossover Audio Plug-in Module turns TI Audio Class-D amplifier EVM’s into a high quality, two-way speaker amplifier.  The plug-in module makes it easy to remove the large and expensive passive crossover found in passive loudspeakers and create a biamped, two-way (...)
Features
  • Compatible with TI Audio Plug-in Module Ecosystem
  • Complete design for two-way, active crossover speakers
  • Active crossover includes a high-pass filter, low-pass filter, baffle step and delay
  • Input: Mono RCA jack
  • Output: Analog, 2-channel, 2-Vrms differential
  • Connect to TI Class-D Audio EVMs (Check (...)
EVALUATION BOARDS Download
document-generic User guide
$149.00
Description

The TPA3250D2EVM Ultra-HD evaluation module demonstrates the TPA3250D2DDW integrated circuit from Texas Instruments. The TPA3250D2DDW is a high-performance class-D amplifier that enables true premium sound quality with high efficiency class-D technology. It features an advanced integrated feedback (...)

Features
  • Stereo Ultra-HD evaluation module
  • Self-contained protection system (short circuit, clip and thermal)
  • Standard 2VRMS differential input or single ended line input
  • BTL, PBTL and SE output configurations support
  • Double-sided, plated-through, 2oz. Cu 4 layer PCB layout

Design tools & simulation

CIRCUIT DESIGNS Download
Class-D LC Filter Designer
LCFILTER-CALC-TOOL — Calculate and design audio Class-D LC filters in minutes using the Class-D LC Filter Designer.  Select from 4 different filter types based on Class-D output, switching topology and performance.  Input corner frequency and quality (Q) factor to fine tune the audio frequency response.  (...)
Features
  • Calculate LC filter inductor and capacitor values quickly
  • Select from 4 different Class-D filter types
  • Tune frequency response with corner frequency and quality factor (Q) inputs
  • Verify and graph filter response with multiple speaker loads
DESIGN TOOLS Download
SLAC743A.ZIP (347 KB)

Reference designs

REFERENCE DESIGNS Download
Universal Input to 3.3V, 12V, 36V, 200W Continuous PSU for Class-D Amplifier Reference Design
PMP10215 — This power module generates all voltages to supply a class-D audio amplifier. The main output voltage is 36V and delivers 200W continuously and 840W peak. The first stage is a power-factor corrected Boost. A Flyback converter supplies 12V on primary side as well as 12V@300mA and 3.3V@200mA on (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
HTSSOP (DDW) 44 View options

Ordering & quality

Support & training

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