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一种应用开关电容分压的电源电压检测电路
资料介绍
提出了一种基于标准CMOS工艺的电压检测VD(Voltage Detector)电路,具有高集成度、低功耗、检测点多档位可调节的特点。开关电容SC(Switched Capacitor)电路仅需一个低频时钟即可提供准确的电源分压,在低功耗应用中可以有效替代传统电阻分压。在3.3V电源电压的MCU应用中,电压检测电路仅消耗几百nA的电流,对时钟变化不敏感(低频时钟频率变化范围4kHz~40kHz),并且响应时间在一个时钟周期内。
We propose a voltage detect circuit on TSMC 180nm standard CMOS process.The voltage detector(VD)is highly integrated,ultra-low power and configurable threshold voltage.Switch capacitor(SC)circuit is used to provide a highly accurate divider of the voltage under test.The SC divider only consumers several hundreds of nA current in the MCU application of 3.3 V supply voltage.It also has the advantage of insensiveness to switch frequency which varies from 4 kHz to 40 kHz,and can fast response of voltage variation in less than one clock cycle.
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| 文件名 | 大小 |
| 一种应用开关电容分压的电源电压检测电路.pdf | 4M |
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