Editing Current sense
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=== low-side current shunt === | === low-side current shunt === | ||
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Low-side is (electrically) the simplest. | Low-side is (electrically) the simplest. | ||
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=== high-side current shunt === | === high-side current shunt === | ||
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In situations where low-side sensing is difficult ( automobile electronics bonded to the "GND" car frame; other systems where it is inconvenient to put a resistor on the "lo" power wire), we turn to high-side sensing. | In situations where low-side sensing is difficult ( automobile electronics bonded to the "GND" car frame; other systems where it is inconvenient to put a resistor on the "lo" power wire), we turn to high-side sensing. | ||
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==== lossless average inductor current sensing ==== | ==== lossless average inductor current sensing ==== | ||
The "lossless average inductor current sensing" technique: | The "lossless average inductor current sensing" technique: | ||
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The current through an inductor with some known internal parasitic resistance DCR can be sensed with a series resistor (Rs) and capacitor network connected in parallel with the inductor-resistor network. | The current through an inductor with some known internal parasitic resistance DCR can be sensed with a series resistor (Rs) and capacitor network connected in parallel with the inductor-resistor network. |