Negative high-voltage generation device with multi-stage selection

A negative high-voltage generation device with multi-stage selection having an input and an output, and the negative high-voltage generation device with multi-stage selection comprising:

• a plurality of negative charge pumps electrically cascaded between the input and the output and configured to receive zero voltage through the input;
• a plurality of electrical switches coupled to the input;
• and
• a control device coupled to the plurality of electrical switches and configured to turn off at least one of the plurality of electrical switches close to the output and to turn on remains of the plurality of electrical switches, and the plurality of negative charge pumps and the plurality of electrical switches are configured to use zero voltage to generate a negative voltage at the output,
• wherein the control device further comprises:
• a stage controller configured to receive and output a plurality of control voltages and configured to generate a plurality of biasing voltages according to the plurality of control voltages;
• and
• a plurality of negative level shifters coupled to the stage controller and respectively coupled to the plurality of electrically switches, a node between neighboring two of the plurality of negative charge pumps is coupled to one of the plurality of negative level shifters, the output is coupled to one of the plurality of negative level shifters, the plurality of negative level shifters are configured to respectively receive the plurality of control voltages and to respectively receive the plurality of biasing voltages, thereby using the plurality of control voltages and the plurality of biasing voltages to turn off at least one of the plurality of electrical switches close to the output and to turn on remains of the plurality of electrical switches, and the plurality of negative charge pumps and the plurality of electrical switches are configured to use zero voltage to generate a negative voltage at the output.