Apparatus for generating driving signal

摘要

There is provided an apparatus for generating a driving signal, the apparatus including: a first driving signal generation circuit generating a first driving signal; a second driving signal generation circuit generating a second driving signal, the second driving signal generation circuit including at least two transistors and a pulse generation unit; and a control unit controlling the first and second driving signal generation circuits so that they generate the first and second driving signals selectively.

主权项

1. An apparatus for generating a driving signal, the apparatus comprising:
a first driving signal generation circuit generating a first driving signal; a second driving signal generation circuit generating a second driving signal, the second driving signal generation circuit including at least two transistors and a pulse generation unit; and a control unit controlling the first and second driving signal generation circuits so that they generate the first and second driving signals selectively, wherein: the first and second driving signal generation circuits have a common output terminal, a maximum voltage level of the first driving signal is higher than a withstand voltages of the at least two transistors; one transistor among the at least two transistors is connected between the other transistor and the output terminal, a constant voltage equal to the withstand voltage is applied to the gate of the one transistor; and the control unit, when controlling the first driving signal generation circuit to generate the first driving signal, turns the other transistor off.