Trim circuit for e-fuse
AssigneeUnited Microelectronics Corp.
InventorsYang-Ling Wu, Chung-Yuan Lee, Chun-Liang Hu, Chih-Yung Kang, Shih-Hsiung Chiu
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Abstract
A trim circuit for an e-fuse unit includes: a mirroring circuit for receiving an enable signal, when triggered by the enable signal, the mirroring circuit generating a driving voltage; and a driving transistor coupled to the mirroring circuit, in response to the driving voltage from the mirroring circuit, the driving transistor turning ON to generate a MOS current to an output node, wherein the output node is coupled to the e-fuse unit, and in response to the MOS current from the output node, the e-fuse unit is burned out.
Claims8
A trim circuit for an e-fuse unit, comprising:
- a mirroring device for receiving an enable signal, wherein when the mirroring device is triggered by the enable signal, the mirroring device generates a driving voltage;
- and
- a driving transistor coupled to the mirroring device, wherein in response to the driving voltage generated by the mirroring device, the driving transistor is turned on to generate an MOS current to an output node,
- wherein,
- the output node is further coupled to the e-fuse unit,
- in response to the MOS current transmitted from the output node, the e-fuse unit is melted to a high impedance state.
Dependencies are inferred from the claim text.