| 摘要 |
PROBLEM TO BE SOLVED: To improve pressure resistance, while ensuring stable operation without the need for complicated manufacturing processes. SOLUTION: A control signal A outputted by an MCU11 is transmitted to a drive circuit 3a for driving a power switching element 1a of an upper arm via a two-stage level shift circuit. The first-stage level shift circuit is constituted of a series circuit, consisting of a switching element 13 and a resistor element 14, and the second-stage level shift circuit is constituted of a series circuit consisting of a switching element 16 and a resistor element 17. |
