SWITCHING POWER AMPLIFIER AND METHOD OF CONTROLLING THE SAME |
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| 申请号 | EP09798129 | 申请日 | 2009-07-16 | 公开(公告)号 | EP2304871A4 | 公开(公告)日 | 2011-12-07 |
| 申请人 | SAMSUNG ELECTRONICS CO LTD; | 发明人 | PARK HAE-KWANG; | ||||
| 摘要 | A switching power amplifier having a pulse width modulation (PWM) signal generation unit that converts an input audio signal into a PWM signal with a predetermined carrier frequency, a correction unit that corrects the difference between an audio signal included in the PWM signal and a negative feedback output audio signal to generate a corrected PWM signal, a low pass filter that removes a high-frequency component from the corrected PWM signal, a frequency modulation unit that modulates the corrected PWM signal so that the corrected PWM signal has a switching frequency different from the carrier frequency of the input PWM signal to generate a modulated PWM signal, and a power amplification unit that amplifies a power of the modulated PWM signal. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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