Law j 14 national taiwan university power ics

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Unformatted text preview: 室 Chern-Lin Chen 陳秋麟 Coupled Inductor Current 11 National Taiwan University 國立台灣大學 Power ICS Laboratory 功率積體電路與系統實驗室 Chern-Lin Chen 陳秋麟 Leakage Inductance Effect I ipri isec t 12 National Taiwan University 國立台灣大學 Power ICS Laboratory 功率積體電路與系統實驗室 Chern-Lin Chen 陳秋麟 Magnetics Basics Hysteresis Phenomenon B = μH = μ r μ0 H eind = dλ dt (flux density) ∫ v ⋅ dt = NA∫ dB φ = B⋅ A λ = Nφ l R= μA (flux) (flux linkage) (magnetic resistance) 13 National Taiwan University 國立台灣大學 Power ICS Laboratory 功率積體電路與系統實驗室 Chern-Lin Chen 陳秋麟 Basic Principles eind = dλ dt e ind = ∫ v ⋅ dt = NA∫ dB dλ dt (Farady’s Law) ∫ v ⋅ dt = N A ∫ dB ∫ B ⋅ dl = μ I ∫ H ⋅ dl = ∑ N I 0 enc j j (Ampere’s Law) j 14 National Taiwan University 國立台灣大學 Power ICS Laboratory 功率積體電路與系統實驗室 Chern-Lin Chen 陳秋麟 CCM Energy Storing Interval ipri ipri LP Vd Cin Bsat Bw Q1 Br 0 t on B t H Vd = LP National Taiwan University 國立台灣大學 Δi pb ton Vsw,max = Vd ,max + n(VO + VF ) 15 Power ICS Laboratory 功率積體電路與系統實驗室 Chern-Lin Chen 陳秋麟 CCM Energy Releasing Interval isec i sb DO 0 t t off CO R VO Bsat Bw B isec Q Br H Δi VO + VF = LS sb t off 16 National Taiwan University 國立台灣大學 VF ,max = Vd ,max n + VO Chern-Lin Chen 陳秋麟 Power ICS Laboratory 功率積體電路與統實驗室 Air Gap NP = LP ⋅ i pp Bm ⋅ Ae lg Bm = u0 H g = = 0.4π ⋅ N P ⋅ i pp lg 2 0.4π ⋅ LP ⋅ i pp Bm Ae ⋅ l g 2 0.4π ⋅ LP i pp 2 Ae Bm lg = 17 National Taiwan University 國立台灣大學 Power ICS Laboratory 功率積體電路與系統實驗室 Chern-Lin Chen 陳秋麟 Conduction Modes EMI noise Conduction loss 18 National Taiwan University 國立台灣大學 Right half plane zero Power ICS Laboratory 功率積體電路與系統實驗室 Chern-Lin Chen 陳秋麟 Snubber 19 National Taiwa...
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This note was uploaded on 10/16/2010 for the course GRADUATE I Power IC taught by Professor Chern-linchen during the Fall '09 term at National Taiwan University.

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