Determination of over current protection thresholds for class D audio amplifiers
Författare
Summary, in English
Monolithic class-D audio amplifiers typically feature built-in over current protection circuitry that shuts down the amplifier in case of a short circuit on the output speaker terminals. To minimize cost, the threshold at which the device shuts down must be set just above the maximum current that can flow in the loudspeaker during normal operation. The current required is determined by the complex loudspeaker impedance and properties of the music signals played. This work presents a statistical analysis of peak output currents when playing music on typical loudspeakers for home entertainment.
Publiceringsår
2005
Språk
Engelska
Sidor
125-128
Publikation/Tidskrift/Serie
23rd NORCHIP Conference, 2005.
Länkar
Dokumenttyp
Konferensbidrag
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Status
Published
ISBN/ISSN/Övrigt
- ISBN: 1-4244-0064-3