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A low temperature coefficient, high voltage detection circuit used in Power over Ethernet

机译:低温系数,高压检测电路用于以太网的电源

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A low temperature coefficient, high voltage detection circuit used in Power over Ethernet is proposed. This circuit realizes the detection comparison without utilizing an extra voltage reference circuit and comparator while the temperature coefficient of the threshold voltage is as low as that of a regular bandgap reference. The proposed detection circuit is implemented in CSMC 0.5μm 60V BCD process, Cadence Spectre simulation results show that the temperature coefficient of the threshold voltage is 66.5 ppm/°C over the temperature range of -40°C to 125°C, and the maximum variation of the threshold voltage is 2.7% under all corners.
机译:提出了低温系数,用于以太网的电源的高压检测电路。该电路实现了检测比较,而不利用额外的电压参考电路和比较器,而阈值电压的温度系数与常规带隙参考一样低。所提出的检测电路在CSMC0.5μm60V BCD过程中实现,Cadence幽灵仿真结果表明,阈值电压的温度系数在-40°C至125°C的温度范围内为66.5ppm /°C,最大在所有角落下阈值电压的变化为2.7%。

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