| Summary: | 碩士 === 國立雲林科技大學 === 電子工程系 === 105 === The Class-D audio amplifier is widely used in a variety of sound systems. It is compared with other types of audio amplifier, high efficiency, and small size；When a circuit has been the processed signal at high-speed in a long time will cause overheating problems. The common practice is to circuit the voltage, current, and frequency to do the temperature improvement. This paper to change the output power of multilevel Class D audio amplifier for research. In this paper, the continuous dynamic regulates circuit in the D class audio amplifier output power. When the current temperature sensor (current temperature sensor) detects a multilevel class D audio amplifier over-temperature, it will regulate the dynamic regulate circuit to control the output power, and finally, reduce the power consumption to achieve continuous over-temperature protection effect. And then use the signal before the frequency to regulate the multilevel class D audio amplifier output power, and effectively reduce its power consumption, to achieve Uninterruptible Power and audio-hole-free problem over-temperature protection effect.
Keywords: Multilevel Class D Audio Amplifier; Temperature Sensor.
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