Diagnosing Automotive Faults with Class D Audio Amplifiers

Abstract: This application note explains how to run the diagnostics for the MAX13300/MAX13301/MAX13302 automotive Class-D amplifiers.

Maxim > App Notes > Amplifier and Comparator Circuits Audio Circuits Automotive
Keywords: MAX13300, MAX13301, Class D, Class D audio, high power audio, automotive audio, automotive Class D, automotive Class D Mar 31, 2011
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APPLICATION NOTE 4943
Diagnosing Automotive Faults with Class D Audio Amplifiers
By: Jon Wallace


Abstract: This application note explains how to run the diagnostics for the MAX13300/MAX13301/MAX13302 automotive Class-D
amplifiers.


Introduction
The MAX13300 automotive Class D audio amplifiers incorporate many built-in diagnostics to help locate faults in the system. The
amplifiers detect the following fault conditions on the speaker outputs when there is no audio present. Since audio may not be
present during these tests, those tests are typically run once