Patent ID: 7782098

Claim:
A drive circuit of a voltage driving type semiconductor element, which drives the voltage driving type semiconductor element, comprising: a first switch connected to a positive side of a DC power supply; a second switch connected to the other terminal of said first switch and to a negative side of said DC power supply; a third switch connected to the positive side of the DC power supply; a fourth switch connected to the other terminal of said third switch; a fifth switch connected to the other terminal of said fourth switch and to the negative side of the DC power supply; and a capacitor connected to the other terminal of said first switch and to the other terminal of said fourth switch; wherein: a gate of said voltage driving type semiconductor element is connected to the other terminal of said third switch; and a source of said voltage driving type semiconductor element is connected to the negative side of said DC power supply, wherein: said first, third, and fifth switches are turned ON at the same timing; and said second and said fourth switches are turned ON at complementary timing with respect to said first, third, and fifth switches.