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DCR Current Sensing DCR Current Sensing can be used to remove the additional conduction loss introduced by current sense resistor. The voltage across DCR.

Published byBeatrice Robbins Modified over 6 years ago

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Presentation on theme: "DCR Current Sensing DCR Current Sensing can be used to remove the additional conduction loss introduced by current sense resistor. The voltage across DCR."β€” Presentation transcript:

1 DCR Current Sensing DCR Current Sensing can be used to remove the additional conduction loss introduced by current sense resistor. The voltage across DCR can be extracted using a R-C network. Matching R1C time constant with L/DCR time constant 𝑅1×𝐢=𝐿/𝐷𝐢𝑅 Then Equivalent Current Sense Resistance will be 𝑉 𝐢 = 𝑉 𝐷𝐢𝑅 𝑅 𝑠𝑒𝑛𝑠𝑒 =𝐷𝐢𝑅

2 DCR Current Sensing (DCR is higher than desired current sense resistance)
Matching the time constants 𝑅1×𝑅2 𝑅1+𝑅2 ×𝐢=𝐿/𝐷𝐢𝑅 Equivalent Current Sense Resistance 𝑅 𝑠𝑒𝑛𝑠𝑒 = 𝑅2 𝑅1+𝑅2 ×𝐷𝐢𝑅

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