发明名称 |
ELECTRONIC CURRENT-LIMITING APPARATUS |
摘要 |
Apparatus disclosed herein implement a fast transient precision current limiter such as may be included in an electronic voltage regulator. The current limiter includes two current sense element/current clamp control loops. A fast response time control loop first engages and clamps a current spike. A precision control loop then engages to more accurately clamp the output current to a programmed set point. The precision clamping loop includes an inner loop to linearize the precision current sense element. The inner loop forces the drain-to-source voltage (VDS) of the precision sense element to track the VDS of the regulator pass element. A more precise clamping operation results. Overall speed is not sacrificed as the fast response time clamping loop operates in parallel to protect circuitry while the precision clamping loop engages. |
申请公布号 |
EP3005012(A4) |
申请公布日期 |
2017.02.22 |
申请号 |
EP20140804381 |
申请日期 |
2014.05.28 |
申请人 |
Texas Instruments Incorporated |
发明人 |
TORRES, Hector;PARKHURST, Charles |
分类号 |
G05F1/10;G05F1/56;G05F1/573;G05F1/575;H02H9/00;H02H9/02 |
主分类号 |
G05F1/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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