Patent ID: 8680824
Filing Date: 2014-03-25
Classification: H02M

Abstract:
1. An inverter circuit receiving an input voltage and converting the input voltage to a negative voltage supplied to a load, wherein the negative voltage is lower than 0V, the inverter circuit comprising: a power switch having a terminal coupled to the input voltage; an inductor having a first terminal coupled to another terminal of the power switch and having a second terminal coupled to ground, the first terminal of the inductor supplies the negative voltage to the load; a driver gate driving a gate of the power switch; and a power switch driver control circuit generating a driver signal to drive the power switch via the driver gate; wherein the driver gate receives a high and a low operation voltage which are not input signals to the driver gate, in which the low operation voltage is lower than 0V and is directly or indirectly obtained from the negative voltage which is converted by the inverter circuit from the input voltage.