Methods, apparatus, and system to provide a high-efficiency drive for a floating power device
AssigneeTexas Instruments Incorporated
InventorBrian Ashley Carpenter
Life of this patent
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Abstract
Methods and apparatus to provide a high-efficiency drive for a floating gate are disclosed. An example apparatus includes a driver including a supply terminal, the driver configured to output a third voltage corresponding to the supply terminal, the driver to drive a gate of a transistor in a power converter; and a second capacitor to be charged using a first discharging current of a first capacitor and discharged at the supply terminal of the driver, the driver to drive the gate of the transistor based on a second discharging current from the second capacitor.
Claims22
An apparatus comprising:
- a driver including a supply terminal, the driver configured to output a third voltage corresponding to the supply terminal, the driver to drive a gate of a transistor in a power converter;
- and
- a second capacitor to be charged using a first discharging current of a first capacitor and discharged at the supply terminal of the driver, the driver to drive the gate of the transistor based on a second discharging current from the second capacitor,
- wherein the driver is a first driver, further including:
- a second driver configured to output a first voltage and a second voltage;
- and
- the first capacitor to be charged when the second driver outputs the first voltage and discharged when the second driver outputs the second voltage.
(canceled)
An apparatus to drive a gate of a transistor of a power converter, the apparatus comprising:
- a first driver coupled to ground;
- a first capacitor including a first terminal coupled to an output of the first driver;
- a first switch coupled to a second terminal of the first capacitor and a second switch at a first node;
- a second capacitor including a third terminal coupled to the first switch at a second node;
- and
- a second driver including a supply input coupled to the first switch and the third terminal second capacitor at the second node.
A system comprising:
- a power converter including a first high-side transistor and a second high-side transistor, the first high-side transistor not being coupled to ground;
- and
- a gate driver to control the first high-side transistor, the gate driver including:
- a first capacitor coupled to a second source of the second high-side transistor via a first switch;
- a second capacitor including a first terminal coupled to a first source of the first high-side transistor and a second terminal coupled to the first capacitor via a voltage clamp and a second switch;
- and
- a driver including a supply terminal coupled to the second terminal of the second capacitor and the voltage clamp, the driver to enable the first high-side transistor using a discharge current of the second capacitor based on a control signal.
(canceled)
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Dependencies are inferred from the claim text.