阅读说明：本技术 电荷泵电路及电子设备 (Charge pump circuit and electronic equipment ) 是由 王肖 于 2020-06-16 设计创作，主要内容包括：本发明实施例涉及集成电路领域,公开了一种电荷泵电路及电子设备。本发明中,通过设置第一比较器,将供电单元与第一电荷泵的输出端分别连接第一比较器的第一输入端、第二输入端,从而可以通过第一比较器比较供电单元与第一电荷泵输出端的电压的大小,且将两者中较大的电压作为第一电荷泵的输入电压,且当第一电荷泵的输出端的电压大于第一电荷泵的输入端电压时,形成一个反馈环路,使得第一电荷泵的输入端电压增大,而根据MOS管的特性可知,电压越大,电阻越小,损耗也就越少；因此,通过本申请的电路可以在供电单元的电压不变的情况下,降低电荷泵的损耗,提高了电荷泵整体的工作效率。(The embodiment of the invention relates to the field of integrated circuits, and discloses a charge pump circuit and electronic equipment. According to the invention, the power supply unit and the output end of the first charge pump are respectively connected with the first input end and the second input end of the first comparator by arranging the first comparator, so that the voltage of the output ends of the power supply unit and the first charge pump can be compared by the first comparator, the larger voltage of the output ends of the power supply unit and the first charge pump is taken as the input voltage of the first charge pump, and when the voltage of the output end of the first charge pump is larger than the voltage of the input end of the first charge pump, a feedback loop is formed, so that the voltage of the input end of the first charge pump is increased, and according to the characteristics of an MOS (metal oxide semiconductor) transistor, the larger voltage is, the smaller resistance is, and the lower loss is; therefore, the circuit can reduce the loss of the charge pump and improve the overall working efficiency of the charge pump under the condition that the voltage of the power supply unit is not changed.)

电荷泵电路及电子设备

技术领域

本发明实施例涉及集成电路领域，特别涉及一种电荷泵电路及电子设备。

背景技术

电荷泵是一种直流-直流转换器，主要是利用电容器作为储能元件，用来产生比输入电压大的输出电压，电荷泵电路的电效率很高，且电路结构也较为简单，在生产中有着广泛的应用。现有技术中通常采用的电荷泵电路结构是设置电容和MOS开关管，并通过MOS开关管的导通与断开不断使得电容在充电和放点这两个状态之间切换，从而实现电荷泵输出端的高电压输出。

发明人发现现有技术中至少存在如下问题：MOS开关管导通状态下是存在电阻的，且输入电压越小，阻值越大，电荷泵的损耗也就越高，从而影响电荷泵的工作效率。