The high tension side power supply voltage supply line which the rise

摘要

In the level shift circuit 2, with the high tension side power source line and the entry edge n voltage BOOT is supplied of the inverter circuit where which consists of PMOS transistor Q1 and NMOS transistor Q2, the NMOS transistor Q5 where the gate and the source short is provided, low with the voltage where voltage SW is supplied side power source line and the entry edge n of the inverter circuit which consists of PMOS transistor Q1 and NMOS transistor Q2, the NMOS transistor Q6 where the gate and the source short is provided, the lead of the voltage waveform of the entry edge n is held down with the body diode of NMOS transistor Q5 and Q6. Because of this, it can suppress the malfunction of the level shift circuit.