Back to results
US 10,541,623 B1Granted
Circuit with an input voltage divider and two half-bridges
AssigneeInfineon Technologies AG
InventorVratislav Michal
Life of this patent
Estimating the term…
Abstract
A circuit topology and switching scheme for a circuit that includes an input voltage divider configured to provide a divided voltage that may be approximately half of a supply voltage. The circuit also includes a switching circuit with a first half-bridge that includes a first switching node and a second half-bridge that includes a second switching node. One or more switches are configured to connect the divided voltage to the first switching node and the second switching node.
Claims20
A method comprising:
- connecting, via at least one switch, a first capacitor across a high branch of an input voltage divider and connecting, via the at least one switch, a second capacitor across a low branch of the input voltage divider during a first time period;
- and
- connecting, via the at least one switch, the first capacitor across the low branch of the input voltage divider and connecting, via the at least one switch, the second capacitor across the high branch of the input voltage divider during a second time period different from the first time period,
- wherein the first switch and the second switch are connected in series, and
- wherein a first node between the first switch and the second switch connects to a second node that divides the high branch of the input voltage divider from the low branch.
2 more elements
A circuit comprising:
- an input voltage divider configured to provide a divided voltage, wherein the divided voltage is approximately half of a difference between a supply voltage and a reference voltage;
- a switching circuit comprising a first half-bridge that includes a first switching node and a second half-bridge that includes a second switching node;
- and
- a first switch connected in series with a second switch,
- wherein the divided voltage is electrically connected to a node between the first switch and the second switch;
- wherein the first switch is configured to connect the divided voltage to the first switching node, and
- wherein the second switch is configured to connect the divided voltage to the second switching node.
4 more elements
A system comprising:
- an input voltage divider configured to provide a divided voltage, wherein the divided voltage is approximately half of a difference between a supply voltage and a reference voltage;
- a switching circuit comprising a first half-bridge that includes a first switching node and a first capacitor and a second half-bridge that includes a second switching node and a second capacitor;
- a first switch, wherein the first switch is configured to connect the divided voltage to the first switching node;
- a second switch, wherein the second switch is configured to connect the divided voltage to the second switching node, and wherein the second switch is connected in series with the first switch;
- and
- a controller configured to:
- control a first transistor of the first half bridge to operate at a line frequency and control a second transistor of the first half bridge to operate at a switching frequency;
- and
- connect, via the first switch, the first capacitor across a high branch of the input voltage divider and connect, via the second switch, the second capacitor across a low branch of the input voltage divider during a first time period.
6 more elements
Dependencies are inferred from the claim text.