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US 2007/0164807 A1Published application
Fuse repair circuit and its operating method
AssigneeFortune Semiconductor Corporation
InventorsXiao Wu, Yi Huang
Life of this patent
Estimating the term…
Abstract
A fuse repair circuit and an operating method thereof provide a voltage source and a control signal to a switch, and an end of the switch is connected to a first end of a fuse, and a second end of the fuse is connected to a ground voltage, and the control signal controls whether or not to electrically connect the switch to blow the fuse, and signals outputted from the first and second ends of the fuse are detected to confirm whether or not the fuse is blown.
Claims24
A fuse repair circuit, comprising:
- a voltage source;
- a switch, electrically coupled to the voltage source, and having an end provided for inputting a control signal;
- and
- a fuse, having a first end and a second end, and the first end of the fuse being electrically coupled to a switch, and the second end of the fuse being electrically coupled to a ground voltage;
- wherein a control signal controls whether or not to electrically connect the switch to blow the fuse, and the signals outputted from the first end and the second end of the fuse are detected to confirm whether or not the fuse is blown.
2 more elements
A method of repairing a fuse, comprising:
- providing a voltage source to a switch;
- providing a control signal to the switch;
- and
- passing a current provided by the voltage source to a ground voltage through the switch and the first and second ends of the fuse to blow the fuse, when the control signal drives the switch to be electrically connected.
1 more element
A method of detecting whether or not a fuse is blown, comprising:
- providing a voltage source;
- connecting the voltage source to a first end of the fuse through a switch;
- connecting a second end of the fuse to a ground voltage;
- and
- detecting a potential difference between the first and second ends of the fuse to determine whether or not the fuse is blown.
2 more elements
Dependencies are inferred from the claim text.