差分放大电路在电源管理器件精确测量中的应用
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摘要
由于电源管理器件的稳定性、安全性、隔离性等特征,该类器件作为必要部件,广泛应用于众多的电子产品中。电源管理器件在设计程中,其电压调整率、负载调整率作为核心参数,直接影响器件的应用范围和性能。本文主要介绍了差分放大电路在电源管理器件精确测试中的应用。本文将利用市场常见的运算放大器搭建差分放大电路,将电源管理器件的输出电压进行屏蔽,只对电压调整率、负载调整率微小电压变化进行放大,从而实现精确测量。常规测试方案中需采用高精度、大测量范围的仪表,此方案可较少的使用辅助电路并以更低的成本实现相同功能。通过试验论证,本方案测量结果精度高、数据稳定。
Due to the stability, security and isolation of power management devices, these devices are widely used in many electronic products as essential components. In the design process of the power management device, its voltage regulation rate and load regulation rate as core parameters directly affect the application range and performance of the device. This paper mainly introduces the application of differential amplifier circuit in the accurate test of power management device. This article will use the common operational amplifiers in the market to build a differential amplifier circuit, to shield the output voltage of the power management device, and only amplify the voltage regulation rate and the load regulation rate. Achieve accurate measurements. In the conventional test scheme, a high-precision, large-measurement meter is required, which can reduce the use of auxiliary circuits and achieve the same function at a lower cost. Through experimental demonstration, the measurement results of this scheme are high precision and the data is stable.
Due to the stability, security and isolation of power management devices, these devices are widely used in many electronic products as essential components. In the design process of the power management device, its voltage regulation rate and load regulation rate as core parameters directly affect the application range and performance of the device. This paper mainly introduces the application of differential amplifier circuit in the accurate test of power management device. This article will use the common operational amplifiers in the market to build a differential amplifier circuit, to shield the output voltage of the power management device, and only amplify the voltage regulation rate and the load regulation rate. Achieve accurate measurements. In the conventional test scheme, a high-precision, large-measurement meter is required, which can reduce the use of auxiliary circuits and achieve the same function at a lower cost. Through experimental demonstration, the measurement results of this scheme are high precision and the data is stable.
引文
[1]时万春,张东,魏道政,孙义和.现代集成电路测试技术[M].北京:化学工业出版社,2006.05
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[3]姜岩峰,张晓波,杨兵.集成电路测试技术基础[M].北京:化学工业出版社,2008.09.
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[2]王宏.模拟电路故障诊断故障字典法研究[D].西安电子科技大学,2007.
[3]姜岩峰,张晓波,杨兵.集成电路测试技术基础[M].北京:化学工业出版社,2008.09.
[4]王水平.电源管理集成电路及应用[M].西安:西安电子科技大学出版社,2007.07.
[5]周淑阁.模拟电子技术[M].南京:东南大学出版社,2008.