A dead-time generating circuit comprising: a constant current circuit configured to generate a constant current whose magnitude is determined by a resistor; a current generating circuit configured to generate a capacitor-charge current equal to the constant current for charging a capacitor; a control circuit configured to receive an input dead time control signal and a comparator signal from a comparator (COMP), the control circuit being configured to generate a dead time generating signal based on the dead time control signal and the comparator signal, and to generate a charge/discharge control signal; and a charge/discharge circuit configured to control the capacitor to charge using the capacitor-charge current from the current generating circuit, or to discharge, in accordance with the charge/discharge control signal, wherein the charge/discharge circuit includes the comparator (COMP) which is configured to compare a voltage of the capacitor with a threshold voltage, (Vth) and to generate the comparator signal when the voltage of the capacitor exceeds the threshold voltage (Vth); characterised in that: the control circuit is configured to generate the charge/discharge control signal based on the dead time generating signal to control charge and discharge of the capacitor and to generate the dead time generating signal delayed from a rise timing or a fall timing of the dead time control signal by a delay time; and in that the control circuit is adapted to generate the charge/discharge control signal for a duration starting from a time when the delay time has elapsed from the most recent rise or fall timing of the dead time control signal until the control circuit receives the comparator signal. a constant current circuit configured to generate a constant current whose magnitude is determined by a resistor; a current generating circuit configured to generate a capacitor-charge current equal to the constant current for charging a capacitor; a control circuit configured to receive an input dead time control signal and a comparator signal from a comparator (COMP), the control circuit being configured to generate a dead time generating signal based on the dead time control signal and the comparator signal, and to generate a charge/discharge control signal; and a charge/discharge circuit configured to control the capacitor to charge using the capacitor-charge current from the current generating circuit, or to discharge, in accordance with the charge/discharge control signal, wherein the charge/discharge circuit includes the comparator (COMP) which is configured to compare a voltage of the capacitor with a threshold voltage, (Vth) and to generate the comparator signal when the voltage of the capacitor exceeds the threshold voltage (Vth); the control circuit is configured to generate the charge/discharge control signal based on the dead time generating signal to control charge and discharge of the capacitor and to generate the dead time generating signal delayed from a rise timing or a fall timing of the dead time control signal by a delay time; and in that the control circuit is adapted to generate the charge/discharge control signal for a duration starting from a time when the delay time has elapsed from the most recent rise or fall timing of the dead time control signal until the control circuit receives the comparator signal.