发明名称 |
CURRENT SENSING CIRCUIT FOR SWITCHING POWER CONVERTERS |
摘要 |
A current sensing circuit for a switched mode power converter employs a passive current sensing network coupled in parallel with the switched inductor. The passive current sensing network is impedance matched to the inductance its inherent resistance, and provides a current sensing node for single wire current sensing by a current sensing circuit. The passive current sensing network can be employed in each of a plurality of phased switching circuits that each contribute to an output of the power converter. |
申请公布号 |
US2015364995(A1) |
申请公布日期 |
2015.12.17 |
申请号 |
US201414301475 |
申请日期 |
2014.06.11 |
申请人 |
Semiconductor Components Industries, LLC |
发明人 |
CHEN GANG |
分类号 |
H02M3/158 |
主分类号 |
H02M3/158 |
代理机构 |
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代理人 |
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主权项 |
1. A current sensing circuit for a power converter, comprising:
a first current sense resistance and a second current sense resistance coupled in series at a current sense node to form a series current sense resistance; the series current sense resistance coupled in parallel with an inductor having an inductance and an inherent resistance, and a first end connected to a switching network; the first current sense resistance coupled to the first end of the inductor, and the second current sense resistance coupled to a second end of the inductor; and a capacitance coupled in parallel with the first current sense resistance. |
地址 |
Phoenix AZ US |