Inverter circuit and method for supplying an inverted voltage
AssigneeRichtek Technology Corporation
InventorsTsan-Huei Wu, Chun-Hsiung Chang, Chih-Hua Hou, Chiu-Yi Chi
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Abstract
The present invention discloses an inverter circuit and a method for supplying an inverted voltage. The method for supplying an inverted voltage comprises: providing a power switch and an inductor electrically connected with each other; driving the gate of the power switch by a driver gate, such that an input voltage is converted to a negative voltage supplied to a load; and providing a low operation voltage to the driver gate according to the negative voltage.
Claims20
An inverter circuit receiving an input voltage and converting the input voltage to a negative voltage supplied to a load, 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 in which the low operation voltage is directly or indirectly obtained from the negative voltage.
An integrated circuit for use in an inverter circuit, the inverter circuit receiving an input voltage and converting the input voltage to a negative voltage supplied to a load, the integrated circuit comprising:
- a power switch having a terminal coupled to the input voltage;
- 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 in which the low operation voltage is directly or indirectly obtained from the negative voltage.
An integrated circuit for use in an inverter circuit, the inverter circuit comprising a power switch and an inductor electrically connected with each other, the power switch operating to convert an input voltage to a negative voltage supplied to a load, the integrated circuit comprising:
- 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 in which the low operation voltage is directly or indirectly obtained from the negative voltage.
A method for supplying an inverted voltage comprises:
- providing a power switch and an inductor electrically connected with each other;
- driving the gate of the power switch by a driver gate, such that an input voltage is converted to a negative voltage supplied to a load;
- and
- providing a low operation voltage to the driver gate according to the negative voltage.
Dependencies are inferred from the claim text.