Driving device

A driving device, comprising:

• a voltage regulator coupled between a first high-voltage terminal and an output terminal of the driving device and configured to receive a first high voltage of the first high-voltage terminal, wherein the voltage regulator is configured to step down the first high voltage to generate a supply voltage;
• a voltage generator coupled to a second high-voltage terminal and the output terminal of the driving device and configured to provide a reference voltage for the output terminal of the driving device, wherein the reference voltage is substantially lower than the supply voltage;
• and
• a first N-channel metal-oxide-semiconductor field effect transistor (NMOSFET) coupled between the output terminal of the driving device and a low-voltage terminal;
• wherein the voltage generator includes:
• a second N-channel metal-oxide-semiconductor field effect transistor (NMOSFET) coupled to the second high-voltage terminal and the voltage regulator;
• a third N-channel metal-oxide-semiconductor field effect transistor (NMOSFET) coupled to the second high-voltage terminal and the output terminal of the driving device;
• a first electronic switch coupled between the second NMOSFET and the third NMOSFET;
• a fourth N-channel metal-oxide-semiconductor field effect transistor (NMOSFET) coupled to the output terminal of the driving device, the third NMOSFET, and the low-voltage terminal;
• a second electronic switch coupled between the fourth NMOSFET and a high bias terminal;
• and
• a signal controller coupled to control terminals of the first electronic switch and the second electronic switch.