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L6714D データシート(PDF) 34 Page - STMicroelectronics |
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L6714D データシート(HTML) 34 Page - STMicroelectronics |
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34 / 70 page  Current reading and current sharing loop L6714 34/70 Figure 9. Current reading connections. Considering now to match the time constant between the inductor and the R-C filter applied (Time constant mismatches cause the introduction of poles into the current reading network causing instability. In addition, it is also important for the load transient response and to let the system show resistive equivalent output impedance), it results: Where IINFOx is the current information reproduced internally. CSx- CSx+ LGATEx I PHASEx Lx CSx+ CSx- PHASEx RLx R C Rg Rg Rg I PHASEx LS Mosfet RdsON Current Sense Inductor DCR Current Sense ICSx- 25 µA ICSx-=IINFOx NO Bias L R L ------- RC I CSx- R L Rg -------- I PHASEx ⋅ = ⇒ ⋅ I INFOx I INFOX R L Rg -------- I PHASEx ⋅ = ⇒ == |
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