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US 9,960,588 B2Granted
Power switch device
AssigneeInfineon Technologies AG
InventorsHans-Peter Kreuter, Christian Djelassi, Bernhard Schaffer
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Abstract
Devices and methods are provided which comprise detecting an irregular condition at a control terminal of a power switch device.
Claims19
A device, comprising:
- a power switch,
- a control terminal,
- at least one load terminal,
- at least one output terminal, and
- a detection circuit configured to detect a high impedance state of the control terminal and to output an error signal at the at least one output terminal in case a high impedance state is detected, wherein the detection circuit is further configured to serve as an input buffer for the control terminal.
2 more elements
A method, comprising:
- detecting an irregular condition at a control terminal of a power switch device,
- detecting the irregular condition when the control terminal is at a low value and another control terminal is at a high value, and
- outputting an error signal in case the irregular condition at the control terminal is detected.
A device, comprising:
- a power switch,
- a control terminal,
- at least one load terminal,
- at least one output terminal,
- a detection circuit configured to detect a high impedance state of the control terminal and to output an error signal at the at least one output terminal in case a high impedance state is detected, and
- a current measurement circuit, the current measurement circuit being adapted to output a measure of a load current of the power switch in a regular mode of operation,
- wherein the detection circuit is configured to output an error current higher than the measure of the load current when a high impedance state is detected.
4 more elements
Dependencies are inferred from the claim text.