POWER SUPPLY CIRCUIT

The present invention provides a charge pump circuit that solves a fundamental problem faced by a feedback method of a voltage feedback charge pump circuit. A power supply circuit is provided with: acharge pump circuit; a feedback circuit for feeding back the output of the charge pump circuit to the input; a first current source for supplying a constant current to the feedback circuit; a MOS transistor element installed at an intermediate position of the feedback circuit; a resistor element installed at a position closer to the output of the charge pump circuit than the MOS transistor elementin the feedback circuit; a bias circuit for applying a constant voltage to the control terminal of the MOS transistor element; and a control unit for controlling the value of the constant current supplied by the first current source to the feedback circuit. 提供一种电荷泵电路，其解决电压反馈电荷泵电路的反馈方法所面临的基本问题。一种电源电路具有：电荷泵电路；反馈电路，用于将电荷泵电路的输出反馈到输入；第一电流源，用于向反馈电路提供恒定电流；MOS晶体管元件，其安装在反馈电路的中间位置；阻抗元件，其安装在反馈电路中比MOS晶体管元件更靠近电荷泵电路的输出的位置；偏置电路，用于向所述MOS