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US 11,456,596 B2Granted
USB type-C load switch ESD protection
AssigneeAlpha and Omega Semiconductor Incorporated
InventorShekar Mallikarjunaswamy
Life of this patent
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Abstract
A MOSFET and an electrostatic discharge (ESD) protection device on a common chip includes a MOSFET with a source, a gate, and a drain, and an ESD protection device configured to implement a diode function that is biased to prevent current from flowing through the common chip from the source to the drain.
Claims13
A device, comprising:
- first and second MOSFETs formed on a common chip and an electrostatic discharge (ESD) protection device formed on an ESD chip,
- wherein each MOSFET of the first and second MOSFETs has a source, a gate, and a common drain,
- wherein the ESD protection device is configured to implement a diode function that is configured to prevent current from flowing through the common chip from the common drain to a ground potential;
- and
- a controller integrated circuit (IC) coupled to the one or more MOSFETs, wherein the controller IC is formed on an IC chip that is separate from the common chip, wherein the controller IC chip and an ESD chip containing the ESD protection device are both disposed on a flip top surface of the common chip on which a back metal layer is formed, wherein a cathode electrode on a bottom of the ESD chip electrically connects to the back metal layer through a conductive adhesive layer and the IC chip has a bottom surface attached to the back metal layer through a nonconductive adhesive layer.
2 more elements
Dependencies are inferred from the claim text.