- 专利标题: Inductive current sensing for DC-DC converter
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申请号: US16163971申请日: 2018-10-18
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公开(公告)号: US11114943B2公开(公告)日: 2021-09-07
- 发明人: Francesco Paolo , Julian Tyrrell
- 申请人: Dialog Semiconductor (UK) Limited
- 申请人地址: GB London
- 专利权人: Dialog Semiconductor (UK) Limited
- 当前专利权人: Dialog Semiconductor (UK) Limited
- 当前专利权人地址: GB London
- 代理机构: Saile Ackerman LLC
- 代理商 Stephen B. Ackerman
- 主分类号: H02M3/158
- IPC分类号: H02M3/158 ; H02M1/32 ; H02M1/00 ; H02M3/156
摘要:
An inductive current sensing method for a DC-DC switching converter is described. A sense coil is placed adjacent to a PCB track between the switching converter output and a load powered by the switching converter. A change in a magnetic field is measured around the track, generating a voltage proportional to a change in a load current. The load current is subtracted from an inductor current, when a current needed on the switching converter output is higher than a current in a steady state. In this way, output voltage undershoot or overshoot in the DC-DC switching converter is minimized.
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