| 发明名称 |
Circuit arrangement, lighting apparatus and method of crosstalk-compensated current sensing |
| 摘要 |
A circuit arrangement comprises a plurality of current channels located in different die areas of a shared circuit die, at least one of the plurality of current channels comprising a power device; at least one sense circuit connected to one or more of the different die areas and arranged to provide a sense current from sensing a current through a primary of the plurality of current channels comprising one of the different die areas. The at least one sense circuit comprises a compensation module arranged to provide a compensation current adapted to at least partly compensate a deviation of the sense current caused by crosstalk between the primary and one or more secondary of the plurality of current channels depending on one or more secondary currents flowing through the one or more secondary current channels; wherein the compensation module is arranged to provide the compensation current at least partly as a weighted sum of the one or more secondary currents. |
| 申请公布号 |
US8952615(B2) |
申请公布日期 |
2015.02.10 |
| 申请号 |
US201114119364 |
申请日期 |
2011.06.14 |
| 申请人 |
Freescale Semiconductor, Inc. |
发明人 |
Dupuy Philippe;Shuvalov Denis Sergeevich;Soldatov Alexander Petrovich;Syngaevskiy Vasily Alekseyevich;Vydolob Gennady Mihailovich |
| 分类号 |
B60Q1/14;H05B37/02;G01R19/00;H05B33/08 |
主分类号 |
B60Q1/14 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A circuit arrangement, comprising
a plurality of current channels located in different die areas of a shared circuit die, at least one of said plurality of current channels comprising a power device; at least one sense circuit connected to one or more of said different die areas and arranged to provide a sense current from sensing a current through a primary of said plurality of current channels comprising one of said different die areas, said at least one sense circuit comprising a compensation module arranged to provide a compensation current adapted to at least partly compensate a deviation of said sense current caused by crosstalk between said primary and one or more secondary of said plurality of current channels depending on one or more secondary currents flowing through said one or more secondary current channels; wherein said compensation module is arranged to provide said compensation current at least partly as a weighted sum of said one or more secondary currents. |
| 地址 |
Austin TX US |
