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TPA6404-Q1

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Automotive, 45-W, 2-MHz, 4-ch 4.5- to 18-V supply analog input Class-D audio amplifier w/ load dump

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Data sheet

TPA6404-Q1

ACTIVE
Data sheet Order now

Product details

Audio input type Analog Input Architecture Class-D Speaker channels (max) 4 Rating Automotive Power stage supply (max) (V) 18 Power stage supply (min) (V) 4.5 Load (min) (Ω) 2 Output power (W) 45 THD + N at 1 kHz (%) 0.01 Iq (typ) (mA) 155 Control interface I2C Closed/open loop Closed Analog supply (min) (V) 4.5 Analog supply voltage (max) (V) 18 PSRR (dB) 75 Operating temperature range (°C) -40 to 125
Audio input type Analog Input Architecture Class-D Speaker channels (max) 4 Rating Automotive Power stage supply (max) (V) 18 Power stage supply (min) (V) 4.5 Load (min) (Ω) 2 Output power (W) 45 THD + N at 1 kHz (%) 0.01 Iq (typ) (mA) 155 Control interface I2C Closed/open loop Closed Analog supply (min) (V) 4.5 Analog supply voltage (max) (V) 18 PSRR (dB) 75 Operating temperature range (°C) -40 to 125
HSSOP (DKQ) 56 190.647 mm² 18.42 x 10.35
  • Advanced Load Diagnostics
    • AC Diagnostic for Tweeter Detection with Impedance and Phase Response
    • Integrated sine wave Generator
  • Easy to meet CISPR25-L5 EMC specification
  • AEC-Q100 Qualified With the Following Results for Automotive Applications:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level: 3A
    • Device CDM ESD Classification Level: C4B
  • Audio Inputs
    • 4 Channel Differential Analog Input
    • Four I2C-Controlled Gain Options
    • High Input Impedance for Low Value AC-coupling Capacitor
  • Audio Outputs
    • Four-Channel Bridge-Tied Load (BTL), with Option of Parallel BTL (PBTL)
    • Up to 2.1 MHz Output Switching Frequency
    • 27 W, 10% THD into 4 Ω at 14.4 V
    • 45 W, 10% THD into 2 Ω at 14.4 V
    • 85 W, 10% THD into 1 Ω at 14.4 V PBTL
  • Audio Performance into 4 Ω at 14.4 V, 1 kHz
    • THD+N < 0.01%
    • 42 µVRMS Output Noise
    • - 90 dB Crosstalk
  • Load Diagnostics
    • Output Open and Shorted Load
    • Output-to-Battery or Ground Shorts
    • Line Output Detection Up to 6 kΩ
    • Runs without Input Clocks
  • Protection
    • Output Current Limiting
    • Output Short Protection
    • 40 V Load Dump
    • Fortuitous Open Ground and Power Tolerant
    • DC Offset
    • Over Temperature
    • Undervoltage and Overvoltage
  • General Operation
    • 4.5 V to 18 V supply voltage
    • I2C Control With 4 Address Options
    • Clip Detection and Thermal Foldback
  • Advanced Load Diagnostics
    • AC Diagnostic for Tweeter Detection with Impedance and Phase Response
    • Integrated sine wave Generator
  • Easy to meet CISPR25-L5 EMC specification
  • AEC-Q100 Qualified With the Following Results for Automotive Applications:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level: 3A
    • Device CDM ESD Classification Level: C4B
  • Audio Inputs
    • 4 Channel Differential Analog Input
    • Four I2C-Controlled Gain Options
    • High Input Impedance for Low Value AC-coupling Capacitor
  • Audio Outputs
    • Four-Channel Bridge-Tied Load (BTL), with Option of Parallel BTL (PBTL)
    • Up to 2.1 MHz Output Switching Frequency
    • 27 W, 10% THD into 4 Ω at 14.4 V
    • 45 W, 10% THD into 2 Ω at 14.4 V
    • 85 W, 10% THD into 1 Ω at 14.4 V PBTL
  • Audio Performance into 4 Ω at 14.4 V, 1 kHz
    • THD+N < 0.01%
    • 42 µVRMS Output Noise
    • - 90 dB Crosstalk
  • Load Diagnostics
    • Output Open and Shorted Load
    • Output-to-Battery or Ground Shorts
    • Line Output Detection Up to 6 kΩ
    • Runs without Input Clocks
  • Protection
    • Output Current Limiting
    • Output Short Protection
    • 40 V Load Dump
    • Fortuitous Open Ground and Power Tolerant
    • DC Offset
    • Over Temperature
    • Undervoltage and Overvoltage
  • General Operation
    • 4.5 V to 18 V supply voltage
    • I2C Control With 4 Address Options
    • Clip Detection and Thermal Foldback

The TPA6404-Q1 device is a four-channel analog-input Class-D audio amplifier that implements a 2.1 MHz PWM switching frequency that enables a cost optimized solution in a very small 4.5 cm2 PCB size, full operation down to 4.5 V for start/stop events, and exceptional sound quality with up to 100 kHz audio bandwidth.

The TPA6404-Q1 Class-D audio amplifier has an optimal design for use in entry level automotive head units that provide analog audio input signals as part of their system design.

The Class-D topology dramatically improves efficiency over traditional linear amplifier solutions.

The output switching frequency operates above the AM band, which eliminates the AM band interference and reduces the output filter size and cost.

The device is offered in a 56 pin HSSOP package with the exposed thermal pad up.

The TPA6404-Q1 device is a four-channel analog-input Class-D audio amplifier that implements a 2.1 MHz PWM switching frequency that enables a cost optimized solution in a very small 4.5 cm2 PCB size, full operation down to 4.5 V for start/stop events, and exceptional sound quality with up to 100 kHz audio bandwidth.

The TPA6404-Q1 Class-D audio amplifier has an optimal design for use in entry level automotive head units that provide analog audio input signals as part of their system design.

The Class-D topology dramatically improves efficiency over traditional linear amplifier solutions.

The output switching frequency operates above the AM band, which eliminates the AM band interference and reduces the output filter size and cost.

The device is offered in a 56 pin HSSOP package with the exposed thermal pad up.
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Type Title Date
* Data sheet TPA6404-Q1 45-W,​​​ 2-MHz Analog Input -Channel Automotive Class-D Audio Amplifier With Load Dump Protection and I2C Diagnostics datasheet (Rev. A) PDF | HTML 14 Feb 2018
Application brief Diagnostics and Protections in Automotive Audio Systems (Rev. A) 24 Sep 2019
Application note Inductor Selection Guide for 2.1 MHz Class-D Amplifiers (Rev. A) 05 Sep 2019
EVM User's guide TPA6404Q1 EVM User's Guide (Rev. A) 15 Feb 2018
Technical article Why you should use a Class-D audio amplifier in your automotive infotainment syste PDF | HTML 08 Jan 2018

Design & development

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Evaluation board

TPA6404Q1EVM — TPA6404-Q1 50-W, 2-MHz Analog Input 4-Channel Automotive Class-D Audio Amplifier Evaluation Module

The TPA6404Q1EVM evaluation module (EVM) demonstrates the TPA6404-Q1 integrated circuit from Texas Instruments. The TPA6404-Q1 device is a four-channel analog-input Class-D audio amplifier that implements a 2.1 MHz PWM switching frequency that enables a cost optimized solution in a very small PCB (...)

User guide: PDF
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Simulation model

TPA6404-Q1 IBIS Model

SLOM440.ZIP (23 KB) - IBIS Model
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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 (...)
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HSSOP (DKQ) 56 View options
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