Invention Grant
- Patent Title: Low capacitance transient voltage suppressor with a mos-triggered silicon controlled rectifier as high-side steering diode
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Application No.: US18305326Application Date: 2023-04-22
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Publication No.: US12021075B2Publication Date: 2024-06-25
- Inventor: Shekar Mallikarjunaswamy
- Applicant: Alpha and Omega Semiconductor (Cayman) Ltd.
- Applicant Address: KY Grand Cayman
- Assignee: Alpha and Omega Semiconductor (Cayman) Ltd.
- Current Assignee: Alpha and Omega Semiconductor (Cayman) Ltd.
- Current Assignee Address: KY Grand Cayman
- Main IPC: H01L27/02
- IPC: H01L27/02 ; H01L27/08 ; H01L29/66 ; H01L29/861

Abstract:
A transient voltage suppressor (TVS) device includes a MOS-triggered silicon controlled rectifier (SCR) as the high-side steering diode and a silicon controlled rectifier (SCR) for the low-side steering diode. In one embodiment, the MOS-triggered SCR includes alternating p-type and n-type regions and a diode-connected MOS transistor integrated therein to trigger the silicon controlled rectifier to turn on. In one embodiment, the SCR of the low-side steering diode includes alternating p-type and n-type regions where the p-type region adjacent the n-type region forming the cathode terminal is not biased to any electrical potential.
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