Invention Grant
- Patent Title: Fast transient precision power regulation apparatus
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Application No.: US13903736Application Date: 2013-05-28
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Publication No.: US09793707B2Publication Date: 2017-10-17
- Inventor: Hector Torres , Charles Parkhurst
- Applicant: TEXAS INSTRUMENTS INCORPORATED
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Gregory J. Albin; Charles A. Brill; Frank D. Cimino
- Main IPC: H02H9/02
- IPC: H02H9/02 ; G05F1/573 ; G05F1/575 ; H02H9/00

Abstract:
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.
Public/Granted literature
- US20140355161A1 FAST TRANSIENT PRECISION POWER REGULATION APPARATUS Public/Granted day:2014-12-04
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