Charge pump circuit with improved dynamic matching performance

The invention discloses a charge pump circuit with improved dynamic matching performance, which comprises a source switch charge pump circuit and a biasing circuit, and is characterized in that the biasing circuit is used for biasing intermediate nodes A and B of a switch and a current source in the source switch charge pump circuit, so that when the switch is turned off, the nodes A and B do notfloat, and the current source can be quickly turned off. By adding the circuit for biasing the intermediate node of the switch and the current source, the floating node when the switch is turned off is avoided, the current source can be quickly turned off, and the dynamic matching performance is improved. 本发明公开了一种改进动态匹配性能的电荷泵电路，包括源极开关电荷泵电路和偏置电路，所述偏置电路用于对源极开关电荷泵电路中开关和电流源的中间节点A、B进行偏置，使得在开关断开时，节点A、B不浮空，电流源可以迅速关断。本发明通过增加对开关和电流源的中间节点进行偏置的电路，避免了在开关断开时的浮空节点，电流源能够迅速关断，改善了动态匹配性能。