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US 2017/0288397 A1Published application
Electrostatic discharge protection
AssigneeNXP B.V.
InventorGe Wang
Life of this patent
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Abstract
Circuits and methods concerning voltage surge protection are disclosed. In an example embodiment, an apparatus includes a switching circuit configured to enable a current path between a first node and a second node in a first mode and disable the current path in a second mode. A biasing circuit configured to, in the surge protection mode, prevent a voltage surge at the first node from enabling the current path to the second node by biasing a voltage of the control node.
Claims20
An apparatus, comprising:
- a switching circuit configured and arranged to enable a current path between a first node and a second node in a first mode and disable the current path in a second mode;
- and
- a biasing circuit configured to, in a second mode, prevent a voltage surge at the first node from enabling the current path to the second node by biasing a voltage of a control node.
A method, comprising:
- in a first mode, enabling a current path between a first node and a second node by setting a control node of a switching circuit electrically connected in the current path to a first voltage;
- and
- in a second mode,
- disabling the current path between the first node by setting the control node to a second voltage;
- and
- in response to a voltage surge at the first node, preventing the switching circuit from enabling the current path by biasing the voltage of the control node.
3 more elements
Dependencies are inferred from the claim text.