公开(公告)号：US11705288B1

公开(公告)日：2023-07-18

申请号：US17572053

申请日：2022-01-10

Applicant: Apple Inc.

Inventor： Gang Ning ,  Jiaqing Xi ,  Felix Ren

IPC: H01G9/07 ,  H01G9/042 ,  H01G9/15

CPC classification number: H01G9/07 ,  H01G9/0425 ,  H01G9/15

Abstract: Many electronic devices may employ electrolytic polymer capacitors in their power supplies for noise filtering, decoupling/bypassing, frequency conversion and DC-DC and AC-DC conversion. However, some polymer capacitors exhibit an anomalous charging current phenomenon, which may prevent proper charging and cause failure in power circuits of the electronic devices. Disclosed herein are polymer capacitors that have a wide band gap material layer between an insulator/dielectric and a polymer cathode, a charge depletion region in the insulator/dielectric, or both, that may mitigate the anomalous charging current.

公开(公告)号：US20230223204A1

公开(公告)日：2023-07-13

申请号：US17572053

申请日：2022-01-10

Applicant: Apple Inc.

Inventor： Gang Ning ,  Jiaqing Xi ,  Felix Ren

IPC: H01G9/042 ,  H01G9/15 ,  H01G9/008

CPC classification number: H01G9/0425 ,  H01G9/008 ,  H01G9/15

Abstract: Many electronic devices may employ electrolytic polymer capacitors in their power supplies for noise filtering, decoupling/bypassing, frequency conversion and DC-DC and AC-DC conversion. However, some polymer capacitors exhibit an anomalous charging current phenomenon, which may prevent proper charging and cause failure in power circuits of the electronic devices. Disclosed herein are polymer capacitors that have a wide band gap material layer between an insulator/dielectric and a polymer cathode, a charge depletion region in the insulator/dielectric, or both, that may mitigate the anomalous charging current.