With the rapid popularity of charging cars and the widespread application of various DC small household appliances,the world has ushered in a new era of DC electricity consumption.For DC electricity measurement,it cur-rently mainly relies on AC metering chips,but it often leads to limited measurement range and large measurement errors.A design approach for DC metering chips is proposed in this paper,which effectively expands the range and improves the metering algorithm by using high-speed switching switches to measure multi-channel analog-to-digital converters with different gain coefficients.The high symmetry chip layout is also designed.After verification,the DC metering chip designed according to this method has the characteristics of ultra wide range and high accuracy,which is expected to have certain reference value for DC metering and provide new ideas for research and application in related fields.
DC meteringhigh-speed switching switchsymmetrical layoutrangeADC
NETL
NSTL
万方数据
