Class D Audio Amplifier Reference Design | NXP Semiconductors

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Class D Audio Amplifier Reference Design

CLASS-D-AUDIO-AMPLIFIER

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The 1000 W class-D audio amplifier reference design provides an example for an audio amplifier along with a push-pull power converter. It operates using the KV1x Tower® series platform or k64 Freedom board.

Block Diagram

ClassD Audio Amplifier

Class D Audio Amplifier Block Diagram
Get diagram PDF

Supported Devices

Processors and Microcontrollers

KV Series Arm Cortex-M4/M0+/M7

  • KV1x: Kinetis® KV1x-75 MHz,  Entry-Level 3ph FOC / Sensorless Motor Control MCUs based on Arm® Cortex®-M0+

K6x Ethernet

  • K64_120: Kinetis® K64-120 MHz, 256 KB SRAM Microcontrollers (MCUs) Based on Arm® Cortex®-M4 Core

Features

General

  • FlexTimer controls the gate drivers for power MOSFETs adding extra protections, such as deadtime insertion, fault control, initialization, and polarity control
  • Low CPU load, leaving processor available for application enhancement

Buy Options

FRDM-K64F-Image

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  • FRDM-K64F
    Active

  • Freedom Development Board for Kinetis K24 (1 MB Flash), K63 and K64 MCUs.

  • Kit Contains:

    • FRDM-K64F hardware
    • Quick Reference card
    • Additional hardware required: USB A-to-MicroB cable (not included)
  • $52.35 USD
  • For a quantity of 1
    • Availability: In Stock
    • Inventory: 68
    • Shipping: Normally ships 1-2 business days
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Order from distributors
TWR-KV10Z32-Image

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  • TWR-KV10Z32
    Active

  • Tower System Development Board for Kinetis KV10 (75 MHz, 16-32 KB Flash) MCUs.

  • Kit Contains:

    • TWR-KV10Z32 Tower System module
    • USB cable
    • Quick start guide document
  • For a quantity of 1
Order from distributors
N true 0 PSPCLASS-D-AUDIO-AMPLIFIERen 4 Application Note Application Note t789 1 Data Sheet Data Sheet t520 1 User Guide User Guide t792 2 en_US en_US 1 1 0 English Class D Audio Amplifier Quick Start Guide 1447908728532709926295 PSP 1.0 MB Registration without Disclaimer None documents Y Extended 1447908728532709926295 /secured/assets/documents/en/user-guide/CLASS-D-AUDIO-AMPLIFIER-QSG.pdf 1001106 /secured/assets/documents/en/user-guide/CLASS-D-AUDIO-AMPLIFIER-QSG.pdf CLASS-D-AUDIO-AMPLIFIER-QSG Y N 2016-10-31 Class D Audio Amplifier Quick Start Guide /webapp/Download?colCode=CLASS-D-AUDIO-AMPLIFIER-QSG /secured/assets/documents/en/user-guide/CLASS-D-AUDIO-AMPLIFIER-QSG.pdf User Guide N 132339537837198660 2023-06-18 pdf Y en Nov 18, 2015 User Guide t792 User Guide User Guide Y N Class D Audio Amplifier Quick Start Guide false en Data Sheet Data Sheet 1 2 FRDM-K64F,FRDM-KL25Z,FRDM-KL26Z,FRDM-KL46Z 0.7 English Sensor Fusion is the process where data from everal different sensors are fused to complete computations that a single sensor could not handle. An example of sensor fusion is computing the orientation of a device in 3-dimensional space using an accelerometer and magnetometer. That data might then be used to alter the perspective presented by a 3D GUI or game. 1412633725080713463426 PSP 6.5 MB None None documents None 1412633725080713463426 /docs/en/data-sheet/XSFLK_DS.pdf 6537660 /docs/en/data-sheet/XSFLK_DS.pdf XSFLK_DS documents N N 2016-10-31 NXP Sensor Fusion Library for Kinetis MCUs for release 5.0 /docs/en/data-sheet/XSFLK_DS.pdf /docs/en/data-sheet/XSFLK_DS.pdf Data Sheet N 980000996212993340 2022-12-07 pdf N en Oct 21, 2015 980000996212993340 Data Sheet Y N NXP Sensor Fusion Library for Kinetis MCUs for release 5.0 Application Note Application Note 1 3 0 English A Class-D amplifier is also known as a switching amplifier, where transistors operate as electronic switches instead of in linear operation. These types of amplifiers are more efficient when compared to analog amplifiers, because they dissipate less heat and are normally cheaper due to the low count of components. 1447902019549700140639 PSP 1.6 MB Registration without Disclaimer None documents Extended 1447902019549700140639 /secured/assets/documents/en/application-note/AN5217.pdf 1569615 /secured/assets/documents/en/application-note/AN5217.pdf AN5217 documents Y N 2016-10-31 Class-D Audio Amplifier using Kinetis FlexTimer /webapp/Download?colCode=AN5217 /secured/assets/documents/en/application-note/AN5217.pdf Application Note N 645036621402383989 2023-06-18 pdf Y en Nov 18, 2015 645036621402383989 Application Note Y N Class-D Audio Amplifier using Kinetis FlexTimer User Guide User Guide 1 4 FRDM-K64F,FRDM-KL25Z,FRDM-KL26Z 1.2 English Sensor fusion is a process by which data from several different sensors are “fused” to compute something more than could be determined by any one sensor alone. An example is computing the orientation of a device in three dimensional space. That data is then used to alter the perspective presented by a 3D GUI or game. 1421448791988712361141 PSP 2.6 MB Registration without Disclaimer None documents Extended 1421448791988712361141 /secured/assets/documents/en/user-guide/XSFL_Prod_UG.pdf 2632156 /secured/assets/documents/en/user-guide/XSFL_Prod_UG.pdf XSFL_PROD_UGPDF documents Y N 2016-10-31 Freescale Sensor Fusion for Kinetis Product Development Kit User Guide - User Guide /webapp/Download?colCode=XSFL_PROD_UGPDF /secured/assets/documents/en/user-guide/XSFL_Prod_UG.pdf User Guide N 132339537837198660 2023-06-18 pdf Y en Jan 16, 2015 132339537837198660 User Guide Y N Freescale Sensor Fusion for Kinetis Product Development Kit User Guide - User Guide true 0 CLASS-D-AUDIO-AMPLIFIER downloads en true 0 Y PSP Application Note 1 /secured/assets/documents/en/application-note/AN5217.pdf 2016-10-31 1447902019549700140639 PSP 3 Nov 18, 2015 Application Note A Class-D amplifier is also known as a switching amplifier, where transistors operate as electronic switches instead of in linear operation. These types of amplifiers are more efficient when compared to analog amplifiers, because they dissipate less heat and are normally cheaper due to the low count of components. Registration without Disclaimer /secured/assets/documents/en/application-note/AN5217.pdf English documents 1569615 None 645036621402383989 2023-06-18 Y /webapp/Download?colCode=AN5217 Class-D Audio Amplifier using Kinetis FlexTimer /secured/assets/documents/en/application-note/AN5217.pdf documents 645036621402383989 Application Note N en Extended Y pdf 0 Y N Class-D Audio Amplifier using Kinetis FlexTimer 1.6 MB AN5217 N 1447902019549700140639 Data Sheet 1 /docs/en/data-sheet/XSFLK_DS.pdf 2016-10-31 1412633725080713463426 PSP 2 Oct 21, 2015 Data Sheet Sensor Fusion is the process where data from everal different sensors are fused to complete computations that a single sensor could not handle. An example of sensor fusion is computing the orientation of a device in 3-dimensional space using an accelerometer and magnetometer. That data might then be used to alter the perspective presented by a 3D GUI or game. None /docs/en/data-sheet/XSFLK_DS.pdf English documents 6537660 None 980000996212993340 2022-12-07 N /docs/en/data-sheet/XSFLK_DS.pdf NXP Sensor Fusion Library for Kinetis MCUs for release 5.0 /docs/en/data-sheet/XSFLK_DS.pdf documents 980000996212993340 Data Sheet N en None Y pdf 0.7 N N NXP Sensor Fusion Library for Kinetis MCUs for release 5.0 FRDM-K64F,FRDM-KL25Z,FRDM-KL26Z,FRDM-KL46Z 6.5 MB XSFLK_DS N 1412633725080713463426 User Guide 2 /secured/assets/documents/en/user-guide/XSFL_Prod_UG.pdf 2016-10-31 1421448791988712361141 PSP 4 Jan 16, 2015 User Guide Sensor fusion is a process by which data from several different sensors are “fused” to compute something more than could be determined by any one sensor alone. An example is computing the orientation of a device in three dimensional space. That data is then used to alter the perspective presented by a 3D GUI or game. Registration without Disclaimer /secured/assets/documents/en/user-guide/XSFL_Prod_UG.pdf English documents 2632156 None 132339537837198660 2023-06-18 Y /webapp/Download?colCode=XSFL_PROD_UGPDF Freescale Sensor Fusion for Kinetis Product Development Kit User Guide - User Guide /secured/assets/documents/en/user-guide/XSFL_Prod_UG.pdf documents 132339537837198660 User Guide N en Extended Y pdf 1.2 Y N Freescale Sensor Fusion for Kinetis Product Development Kit User Guide - User Guide FRDM-K64F,FRDM-KL25Z,FRDM-KL26Z 2.6 MB XSFL_PROD_UGPDF N 1421448791988712361141 /secured/assets/documents/en/user-guide/CLASS-D-AUDIO-AMPLIFIER-QSG.pdf 2016-10-31 1447908728532709926295 PSP 1 Nov 18, 2015 User Guide User Guide Class D Audio Amplifier Quick Start Guide Y Registration without Disclaimer /secured/assets/documents/en/user-guide/CLASS-D-AUDIO-AMPLIFIER-QSG.pdf English 1001106 None User Guide 2023-06-18 Y /webapp/Download?colCode=CLASS-D-AUDIO-AMPLIFIER-QSG Class D Audio Amplifier Quick Start Guide /secured/assets/documents/en/user-guide/CLASS-D-AUDIO-AMPLIFIER-QSG.pdf documents 132339537837198660 User Guide N en Extended Y t792 pdf 0 Y N Class D Audio Amplifier Quick Start Guide 1.0 MB CLASS-D-AUDIO-AMPLIFIER-QSG N 1447908728532709926295 true Y Designs

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