Patent ID: 8222953

Claim:
A boost circuit comprising: a first charge transfer circuit with first transistors connected in series between a first voltage input node and a first voltage output node; a second charge transfer circuit with second transistors connected in series between a second voltage input node and a second voltage output node; first capacitors, one ends of which are connected to first connection nodes between the first transistors and are connected to gates of the second transistors, respectively, the other ends thereof being applied with clocks with plural phases; second capacitors, one ends of which are connected to second connection nodes between the second transistors and are connected to gates of the first transistors, respectively, the other ends thereof being applied with second clocks with plural phases; a third transistor included in the first transistors; a fourth transistor included in the second transistors; a third capacitor included in the first capacitors; a fourth capacitor included in the second capacitors; a fifth capacitor included in the first capacitors; and a sixth capacitor included in the second capacitors, wherein a source of the third transistor is connected to one end of the third capacitor, a gate of the third transistor is connected to one end of the fourth capacitor, a source of the fourth transistor is connected to the one end of the fourth capacitor, a gate of the fourth transistor is connected to the one end of the third capacitor, a drain of the third transistor is connected to one end of the fifth capacitor, a drain of the fourth transistor is connected to one end of the sixth capacitor, the other end of the third capacitor is applied with a third clock, the other end of the fourth capacitor is applied with a fourth clock, the other end of the fifth capacitor is applied with a fifth clock, the other end of the sixth capacitor is applied with a sixth clock, a phase of the third clock is different from a phase of the fourth clock, the phase of the third clock is different from a phase of the fifth clock, a phase of the sixth clock is different from the phase of the fourth clock, and the phase of the sixth clock is different from the phase of the fifth clock.