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US 10,381,821 B2Granted
Power switch device
AssigneeInfineon Technologies AG
InventorsChristian Djelassi, Alexander Mayer
Life of this patent
Estimating the term…
Abstract
Power switch devices and methods are provided where an undervoltage event in a supply voltage is detected. Information regarding the undervoltage event is stored in a memory element. The memory element is supplied by a control signal.
Claims20
A switch device, comprising:
- a control terminal,
- a switch, wherein a control input of the switch is coupled to the control terminal,
- a supply voltage terminal,
- an undervoltage detection circuit configured to detect an undervoltage of a supply voltage provided to the supply voltage terminal, and
- a memory element configured to store information regarding a detected undervoltage, wherein the memory element is coupled to the control terminal such that power is supplied to the memory element by a signal at the control terminal.
2 more elements
A power switch device, comprising:
- a control input terminal,
- a supply voltage terminal,
- a transistor based power switch configured to selectively couple the supply voltage terminal to an output terminal based on a signal at the control input terminal,
- an undervoltage detection circuit configured to detect an undervoltage in a supply voltage at the supply voltage terminal,
- a memory element configured to store information regarding a detected undervoltage event, wherein the memory element is coupled to the control input terminal such that power is supplied to the memory element by a control signal at the control input terminal, and
- a delay circuit configured to delay switching on the power switch based on the information stored in the memory element.
3 more elements
A method, comprising:
- detecting an undervoltage event in a supply voltage of a power switch device, and
- storing information indicative of the undervoltage event in a memory element coupled to a control terminal of the power switch device such that power is supplied to the memory element by a control signal at the control terminal, the control signal controlling switching of the power switch device.
Dependencies are inferred from the claim text.