Switching power supply module and packaging method thereof
US11657947B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2020 |
| Grant date | May 23, 2023 |
| Priority date | — |
| Expiry date | Aug 8, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/30107
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A switching power supply module includes a power inductor which includes a magnetic core and L-shaped metal end electrodes and a switching power supply chip which includes a packaging body, a bare chip and a bottom bonding pad of the bare chip; the L-shaped metal end electrode includes a first electrode part which is welded at 90° to the magnetic core and a second electrode part which extends in parallel from the first electrode part to the middle of the magnetic core and is perpendicular to the first electrode part; the bare chip and the packaging body are embedded between the first, the second electrode part and the magnetic core; the bottom bonding pad abuts between the two second electrode parts and is insulated from the second electrode part, and the weld face of the bottom bonding pad is flush with that of the second electrode part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.