Invention Grant
- Patent Title: Current sensor integrated circuits
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Application No.: US17495879Application Date: 2021-10-07
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Publication No.: US11644485B2Publication Date: 2023-05-09
- Inventor: Shixi Louis Liu , Paul A. David , Natasha Healey
- Applicant: Allegro MicroSystems, LLC
- Applicant Address: US NH Manchester
- Assignee: Allegro MicroSystems, LLC
- Current Assignee: Allegro MicroSystems, LLC
- Current Assignee Address: US NH Manchester
- Agency: Daly, Crowley, Mofford & Durkee, LLP
- Main IPC: G01R15/20
- IPC: G01R15/20 ; H01L23/49 ; G01R19/00 ; H01L23/495

Abstract:
A current sensor integrated circuit configured to sense a current through a current conductor includes a lead frame at least one signal lead, a fan out wafer level package (FOWLP), and a mold material enclosing the FOWLP and a portion of the lead frame. The FOWLP includes a semiconductor die configured to support at least one magnetic field sensing element to sense a magnetic field associated with the current, wherein the semiconductor die has a first surface on which at least one connection pad is accessible, a redistribution layer in contact with the at least one connection pad, and an insulating layer in contact with the redistribution layer, wherein the insulating layer is configured to extend beyond a periphery of the semiconductor die by a minimum distance. The die connection pad is configured to be electrically coupled to the at least one signal lead.
Public/Granted literature
- US20230110671A1 CURRENT SENSOR INTEGRATED CIRCUITS Public/Granted day:2023-04-13
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