Abstract: A voltage generator includes a charge pump, a voltage dividing circuit, and a comparator. The charge pump can output a high voltage. The dividing circuit includes a plurality of resistors and at least one switch. The dividing circuit can generate a first divided voltage of the high voltage when the switch is turned on and a second divided voltage of the high voltage when the switch is turned off. An output signal of the comparator can control the switch and the charge pump. The dividing circuit and the comparator form a feedback loop so that the response speed of the comparator can be increased and the ripples of the high voltage outputted from the charge pump can be decreased.

Abstract: A charge pump circuit includes an input end, a first reservoir capacitor, a second reservoir capacitor, two output ends, a charge pump unit and a charge module. The input end receives an input voltage, and the two output ends output a positive pumping voltage and a negative pumping voltage, respectively. The charge pump unit is utilized for charging the first reservoir capacitor and the second reservoir capacitor respectively by referring to a plurality of operational phases, wherein the charge pump unit does not charge at least one designated reservoir capacitor of the first reservoir capacitor and the second reservoir capacitor during at least one designated operational phase of the plurality of operational phases. When the charge pump unit operates in the at least one designated operational phase, the charge module is utilized for charging the at least one designated reservoir capacitor.

Abstract: A voltage generator includes a charge pump, a voltage dividing circuit, and a comparator. The charge pump can output a high voltage. The dividing circuit includes a plurality of resistors and at least one switch. The dividing circuit can generate a first divided voltage of the high voltage when the switch is turned on and a second divided voltage of the high voltage when the switch is turned off. An output signal of the comparator can control the switch and the charge pump. The dividing circuit and the comparator form a feedback loop so that the response speed of the comparator can be increased and the ripples of the high voltage outputted from the charge pump can be decreased.