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US 9,319,046 B2Granted
Integrated circuit capable of preventing current backflow to power line
AssigneeMStar Semiconductor, Inc.
InventorsShuo-Ting Kao, Chun-Wen Yeh
Life of this patent
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AssigneeMStar Semiconductor, Inc.
InventorsShuo-Ting Kao, Chun-Wen Yeh
Estimating the term…
An integrated circuit capable of preventing current backflow to a power line is provided. The integrated circuit includes an input circuit. The input circuit includes a bonding pad and a pull-up circuit, a pull-up switch, a bulk controlled switch and a control circuit. The pull-up switch includes a first control node and a first bulk node. The bulk controlled switch includes a second control node and a second bulk node. The control circuit controls the first and second control nodes according to an internal signal, a power voltage of the power line and a pad voltage of the bonding pad. When the power voltage is a predetermined voltage, the control circuit turns on the bulk controlled switch. When the power line is at a ground voltage and the bonding pad voltage is at the predetermined voltage, the control circuit turns off the bulk controlled switch and the pull-up switch.
An integrated circuit, capable of preventing current backflow to a power line, comprising:
An integrated circuit, capable of preventing current backflow to a power line, comprising:
Dependencies are inferred from the claim text.