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开关电源控制器欠压锁定电路的研究

更新时间:2020-07-21 05:41:41 大小:290K 上传用户:守着阳光1985查看TA发布的资源 标签:开关电源控制器 下载积分:5分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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针对电源管理芯片中的重要模块UVLO,在带隙基准电压源结构的基础上,引入了对带隙基准的高阶温度补偿功能,有效减小迟滞电压的漂移.同时,该UVLO电路不需要外部提供基准电压和偏置电流,提高了模块电路的可靠性,而且电路具有结构简单、功耗低、电压精确、温度敏感性低等优点.在BCD工艺下,采用Cadence的Spectre软件对电路进行仿真验证.仿真结果证明了所设计UVLO的可行性和正确性.

For the under voltage lockout protection being an important module in the power management chips, this paper pre- sents the optimization design scheme of an under voltage lockout circuit in a standard BCD process, to effectively reduce the hys- teresis voltage drift. On the basis of the band-gap structure, the high-order temperature compensation function is introduced to the band-gap reference. Thus, the reliability of the UVLO circuit is improved without an external reference voltage and bias current. At the same time, the designed UVLO has the advantages of simple structure, low power consumption, high voltage accuracy and low temperature sensitivity. In a standard BCD process, the designed circuit is simulated by using Spectre of Cadence. The ...

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开关电源控制器欠压锁定电路的研究.pdf 290K

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