Back to results
US 2025/0062680 A1Published application
Device including power transistor
AssigneeInfineon Technologies AG
InventorsJohannes ROSTEK, Karl Egil NORLING, Daniele MIATTON
Life of this patent
Estimating the term…
Abstract
Devices including a power transistor having a control terminal coupled to a control node are provided. A supply circuit is coupled to the control node comprising an output capacitor and configured to provide a supply voltage at the output capacitor to supply a further circuit.
Claims20
A device, comprising:
- a power transistor comprising a first load terminal, a second load terminal, and a control terminal;
- a device control node coupled to the control terminal;
- a supply circuit coupled to the device control node, comprising:
- a rectifier arrangement coupled between the device control node and an input side of a charge pump;
- and
- an output capacitor coupled to an output side of the charge pump,
- wherein the supply circuit is configured to provide a supply voltage at the output capacitor;
- and
- a further circuit configured to be supplied by the supply voltage.
6 more elements
A device, comprising:
- a power transistor comprising a first load terminal, a second load terminal, and a control terminal;
- a device control node coupled to the control terminal;
- and
- a supply circuit coupled to the device control node comprising at least one output capacitor and at least one diode coupled between the device control node and the at least one output capacitor,
- wherein the supply circuit is configured to provide a supply voltage at the at least one output capacitor,
- wherein the device control node is further coupled to a first terminal of an auxiliary switch,
- wherein a second terminal of the auxiliary switch is coupled to the control terminal of the power transistor,
- wherein the auxiliary switch is configured to be in an off state until the supply voltage is larger than or equal to a predefined threshold voltage, and
- wherein the device further comprises a further circuit configured to be supplied by the supply voltage.
6 more elements
A device, comprising:
- a power transistor comprising a first load terminal, a second load terminal and a control terminal;
- a device control node coupled to the control terminal;
- and
- a supply circuit coupled to the device control node comprising at least one output capacitor and at least one diode coupled between the device control node and the at least one output capacitor,
- wherein the supply circuit is configured to provide a supply voltage at the at least one output capacitor,
- wherein the device control node is further coupled to a first terminal of an auxiliary switch,
- wherein a second terminal of the auxiliary switch is coupled to the control terminal of the power transistor,
- wherein the device comprises a further circuit configured to be supplied by the supply voltage, and
- wherein the further circuit comprises a safety circuit configured to detect an error condition related to the power transistor and to switch off the auxiliary switch in response to detecting the error condition.
6 more elements
Dependencies are inferred from the claim text.