Threshold Voltage Start-up Boost Converter for Sub-mA Applications
Threshold Voltage Start-up Boost Converter for Sub-mA Applications
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适用于亚毫安级应用的阈值电压启动升压转换器
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
C. Tsui
中科院分区：
文献类型：
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作者：
Ngok;W. Ki;C. Tsui
提出了一种用于升压变换器的阈值电压启动（TVS）方案。TVS转换器可以在制造过程的平均阈值电压下启动，并将0.2 V至0.9 V的波动（能量收集）输入转换为1.2 V的调节输出。它在具有峰值电流控制的不连续导通模式下工作（因此采用脉冲频率调制工作），以减少轻负载时的开关损耗。该转换器的设计与AMS 0.35妈妈CMOS工艺和测量675 mumtimes615妈妈。在输入电压为0.9 V，输出电流为1 mA时，最大效率为83%。
A threshold voltage start-up (TVS) scheme for a boost converter is presented. The TVS converter could start up at the average threshold voltage of the fabrication process, and converts a fluctuating (energy harvesting) input of 0.2 V to 0.9 V to a regulated output of 1.2 V. It operates in discontinuous conduction mode with peak current control (and thus operates with pulse frequency modulation) to reduce switching loss at light loads. The converter was designed with an AMS 0.35 mum CMOS process and measured 675 mumtimes615 mum. The maximum efficiency is 83% at an output current of 1 mA with an input voltage of 0.9 V.