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PTQA430050N2AS Datasheet(PDF) 11 Page - Texas Instruments |
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PTQA430050N2AS Datasheet(HTML) 11 Page - Texas Instruments |
11 / 18 page www.ti.com Differential Remote Sense PTQA430025, PTQA430033, PTQA420050 SLTS261A – MAY 2006 – REVISED DECEMBER 2006 The remote sense pins allows the converter to precisely regulate the DC output voltage at a remote location. This might be a power plane on an inner layer of the host PCB. Connecting Sense(+) directly to +VO, and Sense(–) to –VO will improve output voltage accuracy. In the event that the sense pins are left open-circuit, an internal 10- Ω resistor between each sense pin and its corresponding output prevents an excessive rise in the output voltage. For practical reasons, the amount of IR voltage compensation should be limited to 0.5 V maximum. The remote sense feature is designed to compensate for limited amounts of IR voltage drop. It is not intended to compensate for the forward drop of a non-linear or frequency dependent components that may be placed in series with the converter output. Examples of such components include OR-ing diodes, filter inductors, ferrite beads, and fuses. Enclosing these components with the remote sense connections effectively places them inside the regulation control loop, which can affect the stability of the regulator. 11 Submit Documentation Feedback |
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