TAS5421-Q1

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Automotive, 22-W, 1-ch, 4.5- to 18-V analog input class-D audio amplifier w/ I2C diag, load dump

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Product details

Parameters

Audio input type Analog Input Architecture Class-D Speaker channels (Max) Mono Power stage supply (Max) (V) 18 Power stage supply (Min) (V) 4.5 Load (Min) (ohms) 2 Output power (W) 22 THD + N @ 1 kHz (%) 0.05 Iq (Typ) (mA) 16 Control interface I2C Closed/open loop Closed Analog supply (Min) (V) 4.5 Analog supply (Max) (V) 18 PSRR (dB) 75 Operating temperature range (C) -40 to 125 open-in-new Find other Speaker amps

Package | Pins | Size

HTSSOP (PWP) 16 32 mm² 5 x 6.4 open-in-new Find other Speaker amps

Features

  • Mono BTL Digital Power Amplifier
  • 22-W Output Power at 10% THD+N into 4 Ω
  • 4.5-V to 18-V Operating Range
  • 85% Efficiency into 4 Ω
  • Differential Analog Input
  • Speaker Guard™ Speaker Protection with Adjustable Power Limiter
  • 75-dB Power-Supply Rejection Ratio (PSRR)
  • Load Diagnostic Functions:
    • Open and Shorted Output Load
    • Output-to-Power and Output-to-Ground Shorts
  • Protection and Monitoring Functions:
    • Short-Circuit Protection
    • 40-V Load Dump Protection per ISO-7637-2
    • Output DC Level Detection while Music is Playing
    • Overtemperature Protection
    • Overvoltage and Undervoltage Protection
  • Thermally Enhanced 16-Pin HTSSOP (PWP) Package with PowerPAD Package (Pad Down)
  • Designed for Automotive EMC Requirements
  • Qualified According to AEC-Q100 Grade 2
  • ISO9000: 2002 TS16949 Certified
  • –40°C to 125°C Ambient Temperature Range

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Description

The TAS5421-Q1 is a mono digital audio amplifier, ideal for use in automotive emergency call (eCall), telematics, instrument cluster, and infotainment applications. The device provides up to 22 W into 4 Ω at less than 10% THD+N from a 14.4-Vdc automotive battery. The wide operating voltage range and excellent efficiency make the device ideal for start-stop support or running from a backup battery when required. The integrated load-dump protection reduces external voltage clamp cost and size, and the onboard load diagnostics report the status of the speaker through I2C.

For all available packages, see the orderable addendum at the end of the datasheet.
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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 14
Type Title Date
* Datasheet TAS5421-Q1 22-W Mono Automotive Digital-Audio Amplifier With Load Dump and I2C Diagnostics datasheet (Rev. D) Sep. 02, 2015
Application note Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) Aug. 26, 2019
Application note AN-1849 An Audio Amplifier Power Supply Design (Rev. C) Jun. 27, 2019
Application note TAS5421-Q1 I2C Applications Note (Rev. A) Jul. 25, 2018
Application note Short-to-Battery Protection Strategies for Class-D Amplifiers Nov. 11, 2016
Technical articles How does the eCall system work? Apr. 22, 2016
Technical articles Instrument clusters: moving beyond chimes and dings (part 2) Apr. 17, 2015
Application note TAS5421-Q1 Class-D Output Snubber Design Mar. 19, 2015
Technical articles Instrument clusters: moving beyond chimes and dings Feb. 11, 2015
Technical articles Enhancing the Driving Experience at CES 2015 Dec. 16, 2014
User guide TAS5421EVM User's Guide Jul. 09, 2014
Application note AN-1737 Managing EMI in Class D Audio Applications (Rev. A) May 01, 2013
Application note Filter-Free Class-D Audio Amplifiers Nov. 09, 2009
Application note Power Rating in Audio Amplifier (Rev. A) Mar. 04, 2005

Design & development

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

Hardware development

EVALUATION BOARD Download
249
Description

The TAS5421EVM showcases the latest TI analog input class D closed-loop mono amplifier. The EVM can be used as stand-alone platform with default I2C register settings. The EVM also works with USB2IIC-2 board and TAS5421-Q1 GUI for programming I2C register settings.

Features
  • Mono audio for automotive emergency call (eCall) application
  • Running without I2C initialization
  • GUI control via USB port
  • Passed EMC CISPR 25, class 5

Software development

GUI FOR EVALUATION MODULE (EVM) Download
SLOC307.ZIP (413 KB)

Design tools & simulation

SIMULATION MODEL Download
SLOM382.ZIP (19 KB) - IBIS Model
SIMULATION MODEL Download
SLOM385A.ZIP (93 KB) - PSpice Model
SIMULATION MODEL Download
SLOM395.ZIP (13 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SLOM396.ZIP (32 KB) - TINA-TI Spice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SCHEMATIC Download
SLOC309.ZIP (2882 KB)

Reference designs

REFERENCE DESIGNS Download
Automotive eCall Power Supply Reference Design with High Intermediate Voltage
PMP9768 — This reference design includes a complete power management solution for a standalone emergency call (eCall) system in an automotive environment. The circuit is supplied directly from the car battery rail. It also manages a backup battery to power the eCall system while the car battery rail is not (...)
document-generic Schematic
REFERENCE DESIGNS Download
Automotive eCall Power Supply Reference Design with Low Intermediate Voltage
PMP9769 This reference design includes a complete power management solution for a standalone emergency call (eCall) system in an automotive environment. The circuit is supplied directly from the car battery rail. It also manages a backup battery to power the eCall system while the car battery rail is not (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 16 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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