Invention Grant
- Patent Title: Modular power electronics converters with enhanced connectivity reliability and simplified method of fabrication
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Application No.: US17810050Application Date: 2022-06-30
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Publication No.: US11895775B2Publication Date: 2024-02-06
- Inventor: Yongwan Park , Shiladri Chakraborty , Alireza Khaligh
- Applicant: UNIVERSITY OF MARYLAND, COLLEGE PARK
- Applicant Address: US MD College Park
- Assignee: University of Maryland, College Park
- Current Assignee: University of Maryland, College Park
- Current Assignee Address: US MD College Park
- Agency: Rosenberg, Klein & Lee
- Main IPC: H05K1/14
- IPC: H05K1/14 ; H05K1/11 ; H05K1/18 ; H05K3/36 ; H05K3/34 ; H01L23/473

Abstract:
A hybrid double-sided power switch module comprises a double PCB assembly with switch dies and conductive spacers disposed at both sides of the double PCB assembly in different topologies. The gate connections of the switch dies are enhanced by spring pins soldered in the THVs formed through the PCBs in alignment with the gate terminals. MFCs are positioned at both sides of the double PCBs assembly in contact with the tops of the switch dies and conductive spacers with fuzz buttons serving as contacts between the MFCs and the switch dies and spacers. MFCs serve different functions including AC bus-bars, DC bus-bars, heat-sinks, and their combination. The module can withstand external stress and is fabricated by a simplified and inexpensive process requiring only two solder pastes.
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