Device and method for switch control

A switch control method of a switch control device which includes a first bootstrap circuit, a second bootstrap circuit, a first power transfer circuit, a second power transfer circuit, a first switch circuit, and a second switch circuit, the method comprising:

• setting, by the first bootstrap circuit, an initial voltage of a first node and setting, by the second bootstrap circuit, an initial voltage of a second node;
• blocking, by the second power transfer circuit, an output of a voltage of the second node;
• outputting, by the first power transfer circuit, a voltage of the first node;
• increasing, by the first bootstrap circuit, a voltage value of the first node;
• and
• outputting, in response to the voltage of the first node and by the first switch circuit, a first signal applied to an input of the first switch circuit.

A switch control device comprising:

• a non-overlap circuit configured to output a first control signal and a second control signal, voltage levels of which transition at different time points, based on an enable signal;
• a bootstrap circuit configured to increase a voltage of a first node, based on the first control signal;
• a power transfer circuit configured to receive the voltage of the first node and to output a first voltage, based on the second control signal;
• and
• a switch circuit configured to, in response to the first voltage, output a first signal received at an input of the switch circuit.