Voltage converter power stage
AssigneeInfineon Technologies AG
InventorsVratislav Michal, Kyrylo Cherniak
Life of this patent
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Abstract
A power stage of a voltage converter, including: a series capacitor having a first terminal coupled to a first switch node; a pair of second high-side switches coupled in series between a second switch node and a second terminal of the series capacitor; and a bias switch coupled between the first switch node and a middle node between the second high-side switches, wherein during operation, a voltage across each of the second high-side switches and the bias switch is less than a supply voltage.
Claims20
A power stage of a voltage converter, comprising:
- a series capacitor having a first terminal coupled to a first switch node;
- a pair of second high-side switches coupled in series between a second switch node and a second terminal of the series capacitor;
- and
- a bias switch that is the only switch coupled between the first switch node and a middle node between the second high-side switches,
- wherein during operation, a voltage across each of the second high-side switches and the bias switch is less than a supply voltage.
A buck converter for converting an input voltage to an output voltage, comprising:
- a power stage comprising:
- a series capacitor having a first terminal coupled to a first switch node;
- a pair of second high-side switches coupled in series between a second switch node and a second terminal of the series capacitor;
- a bias switch that is the only switch coupled between the first switch node and a middle node between the second high-side switches,
- wherein during operation, a voltage across each of the second high-side switches and the bias switch is less than a supply voltage;
- a first inductor coupled between the first switch node and an output node;
- and
- a second inductor coupled between the second switch node and the output node.
A boost converter for converting an input voltage to an output voltage, comprising:
- a power stage comprising:
- a series capacitor having a first terminal coupled to a first switch node;
- a pair of second high-side switches coupled in series between a second switch node and a second terminal of the series capacitor;
- a bias switch that is the only switch coupled between the first switch node and a middle node between the second high-side switches,
- wherein during operation, a voltage across each of the second high-side switches and the bias switch is less than half a supply voltage;
- a first inductor coupled between the first switch node and an input node;
- and
- a second inductor coupled between the second switch node and the input node.
Dependencies are inferred from the claim text.