| 基于高性能升压转换器的跨导误差放大器 |
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| 引用本文： | 余凯,邹雪城,童乔凌,李思臻.基于高性能升压转换器的跨导误差放大器[J].固体电子学研究与进展,2008,28(2):293-298. |
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| 作者姓名： | 余凯 邹雪城 童乔凌 李思臻 |
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| 作者单位： | 华中科技大学电子科学与技术系,武汉,430073 |
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| 摘 要： | 在分析峰值电流模式升压转换器原理的基础上,设计了一种结构新颖,高精度高性能跨导误差放大器。提出了将具有动态电流自补偿功能的基准电压电路复用为误差放大器输入级的新方法,克服了传统外接基准电压时误差放大器易受干扰和基准电路设计复杂的缺点,提高了误差信号精度和放大器跨导。设计了输出电阻可调电路,简化了补偿网络设计。电路用0.6μmBiCMOS工艺实现,测试表明:3V输入电压,1.2MHz工作频率下,误差放大器开环电压增益57dB,跨导322μS,输入偏置电流小于50nA;升压转换器输出电压15V,输出纹波小于5mV。
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| 关 键 词： | 误差放大器 基准电压 升压转换器 运算跨导放大器 高精度 高性能 |
Design of Transconductance Error Amplifier Based on High Performance Boost Converter |
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| YU Kai,ZOU Xuecheng,TONG Qiaoling,LI Sizhen.Design of Transconductance Error Amplifier Based on High Performance Boost Converter[J].Research & Progress of Solid State Electronics,2008,28(2):293-298. |
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| Authors: | YU Kai ZOU Xuecheng TONG Qiaoling LI Sizhen |
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| Affiliation: | YU Kai ZOU Xuecheng TONG Qiaoling LI Sizhen(Dept.of Electronic Science & Technology,Huazhong University of Science , Technology,Wuhan,430074,CHN) |
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| Abstract: | On the basis of analyzing the principle of peak-current-mode-controlled boost converter,a novel transconductance error amplifier with high accuracy and high performance is presented.A novel method of using a voltage reference circuit with dynamic current-self-compensation function as the input stage of the error amplifier is proposed to avoid the interference to the conventional external voltage reference and to simplify the design complexity of the voltage reference circuit.The accuracy of error signal and... |
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| Keywords: | error amplifier voltage reference boost converter operational transconductance amplifier high accuracy high performance |
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