Voltage generator
AssigneeKabushiki Kaisha Toshiba
InventorYoshinao Suzuki
Life of this patent
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Abstract
According to one embodiment, a voltage generator includes a step-up circuit and a limiter circuit. The step-up circuit outputs a first voltage to a first node. The limiter circuit includes first and second resistive elements, first and second capacitive elements, a switch element, and a comparator. The first resistive element is between the first node and a second node. The second resistive element is connected to the second node. The first capacitive element is between the first and second nodes. The switch element connects the second capacitive element to the second node at the same time that the first node is connected to a load. The comparator compares the potential at the second node with a reference potential.
Claims16
A voltage generator comprising:
- a step-up circuit which outputs a first voltage to a first node;
- and
- a limiter circuit which monitors a voltage at the first node and controls the step-up circuit,
- wherein the limiter circuit includes:
- a first resistive element which has one end connected to the first node and other end connected to a second node,
- a second resistive element which has one end connected to the second node,
- a first capacitive element which has one electrode connected to the first node and other electrode connected to the second node,
- a second capacitive element,
- a first switch element which connects the second capacitive element to the second node at the same time that the first node is connected to a load, and
- a comparator which compares the potential at the second node with a reference potential and controls the step-up circuit according to the comparison result.
A voltage generator comprising:
- a step-up circuit which outputs a first voltage to a first node;
- and
- a limiter circuit which monitors a voltage at the first node and controls the step-up circuit,
- wherein the limiter circuit includes
- a first resistive element which has one end connected to the first node and the other end connected to a second node,
- a second resistive element which has one end connected to the second node,
- a capacitive element which is provided between the first node and the second node,
- a switch element which disconnects the capacitive element from the first node or the second node at the same time that the first node is connected to a load, and
- a comparator which compares a potential at the second node with a reference potential and controls the step-up circuit according to the comparison result.
Dependencies are inferred from the claim text.