DocumentCode
3414229
Title
Protection of audio amplifiers based on temperature measurements in power transistors
Author
Krabbenborg, B.
Author_Institution
Philips Semicond. Nijmegen, Netherlands
fYear
2004
fDate
15-19 Feb. 2004
Firstpage
374
Abstract
An audio amplifier IC has been realized with protection circuitry based directly upon power-transistor temperature measurements. In contrast to current- or voltage-based measurements, this method gives optimal protection independent of supply voltage (9-28V), load (2-16Ω BTL), ambient temperature and heat sinking.
Keywords
audio-frequency amplifiers; power bipolar transistors; semiconductor device measurement; short-circuit currents; temperature measurement; audio amplifier IC; audio amplifier protection; fault conditions; four-channel audio amplifier; lateral PNP transistor; optimal protection; power transistors; protection circuitry; short circuit; temperature measurements; thermal model; Circuits; Impedance; Power amplifiers; Power dissipation; Power measurement; Power transistors; Protection; Pulse amplifiers; Temperature measurement; Temperature sensors;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid-State Circuits Conference, 2004. Digest of Technical Papers. ISSCC. 2004 IEEE International
ISSN
0193-6530
Print_ISBN
0-7803-8267-6
Type
conf
DOI
10.1109/ISSCC.2004.1332750
Filename
1332750
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