| 基于单片机及FPGA的高效率、低失真D类功放设计 |
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| 引用本文： | 吴兴波,关文翠,贾彬彬.基于单片机及FPGA的高效率、低失真D类功放设计[J].吉林化工学院学报,2012,29(5):69-72. |
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| 作者姓名： | 吴兴波 关文翠 贾彬彬 |
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| 作者单位： | 1. 吉林化工学院信息与控制工程学院,吉林吉林,132022
2. 北华大学物理学院,吉林吉林,132011 |
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| 摘 要： | 提出了基于单片机及FPGA控制的高效率、低失真的D类功放设计.首先,单片机对声音信号进行A/D采样,将声音信号转换为数字信号,然后进入FPGA中,FPGA将数字音频信号信号调制成两路互补的40KHz以上的脉宽可调的PWM信号,利用脉宽可调PWM信号将音频输入信号转换成高频开关信号,从而使功率开关管处于D类工作状态,因此,实现了高效率、低失真的目的.
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| 关 键 词： | D类功放 单片机 PWM信号 FPGA |
D amplifier design on high efficiency and low distortion of MCU and FPGA |
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| WU Xing-bo,GUAN Wen-cui,JIA Bin-bin.D amplifier design on high efficiency and low distortion of MCU and FPGA[J].Journal of Jilin Institute of Chemical Technology,2012,29(5):69-72. |
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| Authors: | WU Xing-bo GUAN Wen-cui JIA Bin-bin |
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| Affiliation: | 1(1.College of Information & Control Engineering,Jilin Institute of Chemical Technology,Jilin City 132022,China;2.Institute of Physics,Bei Hua University,Jilin City 132011,China.) |
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| Abstract: | The design of MCU and FPGA control with high efficiency and low distortion of the D amplifier was presented.Firstly,MCU collects A/D sampling for sound signals and transforms it into digital signal.Then the digital signal will be sent to FPGA and digital audio signal was modulated into PWM signal with two complementary and above two 40 KHz adjustable pulse width by FPGA.Audio input signal was transformed into high-frequency switching signal by adjustable pulse width PWM Which makes power switch tube in D kind of work condition,therefore,realizing the purpose of high efficiency and low distortion. |
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| Keywords: | D Class Audio Power Amplifier MCU PWM Signal FPGA |
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