Efficiency concept for driving a PMOS and NMOS full-bridge power stage
AssigneeInfineon Technologies Austria AG
InventorDerek Bernardon
Life of this patent
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Abstract
A circuit, which might be a full-bridge driver circuit, comprises a first PMOS high-side transistor device and a first NMOS low-side transistor device. The circuit further comprises turn-on circuitry configured to turn on the first PMOS high-side transistor device while simultaneously turning on the first NMOS low-side transistor device, by routing charge stored in a gate of the first PMOS high-side transistor device to a gate of the first NMOS low-side transistor device, to charge the gate of the first NMOS low-side transistor device.
Claims8
A circuit, comprising:
- a first PMOS high-side transistor device;
- a first NMOS low-side transistor device;
- and
- turn-on circuitry configured to turn on the first PMOS high-side transistor device while simultaneously turning on the first NMOS low-side transistor device, by routing charge stored in a gate of the first PMOS high-side transistor device to a gate of the first NMOS low-side transistor device, to charge the gate of the first NMOS low-side transistor device.
A method for operating a circuit comprising a PMOS high-side transistor device and a NMOS low-side transistor device, wherein the PMOS-high side transistor device is connected between a high-side voltage and a first node of a load and the NMOS low-side transistor device is connected between a second node of the load and a low-side voltage, the method comprising:
- turning on the PMOS high-side transistor device while simultaneously turning on the NMOS low-side transistor device, by routing charge stored in a gate of the first PMOS high-side transistor device to a gate of the NMOS low-side transistor device, to charge the gate of the NMOS low-side transistor device.
Dependencies are inferred from the claim text.