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デザインキット・擬似共振回路の.IC設定ガイド

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デザインキット・擬似共振回路の.IC設定ガイドです。

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デザインキット・擬似共振回路の.IC設定ガイド

  1. 1. Initial condition setting for applicationcircuit simulation 1) Purpose of initial condition setting 2) VCC startup voltage vs. initial condition (.IC) setting 3) Output voltage (19V) startup vs. initial condition (.IC) setting 4) Simulation result with all initial condition (IC) is set 5) Simulation circuit with all initial condition (IC) is set 1
  2. 2. 1) Purpose of initial condition setting • Shorten simulation time • Improve simulation convergence 2
  3. 3. 2) VCC startup voltage vs. initial condition (.IC) setting V(C1) IC=139 V(VH) Setup IC to shorten simulation time 50.537ms V(VCC) IC=10.19 (Value less than VCCON) V(OUT) IC_ON IC_OFF 3
  4. 4. 2) VCC startup voltage vs. initial condition (.IC) setting K K1 K_Linear C6 COUPLING = 0.98 L1 = Ls 4700pF L2 = Lp L3 = Lsub C_T1 DY G865C15R D21 2200pF D22 Rp_T1 L1 0.001 4.7uH RSL1 1 2 VO_19V D23 D1 1m R2 C3 2 1 56k 2200pF D24 3300uFx3 Lp Ls C4 C5 RL IC=139 {Lp} {Nsp*Nsp*Lp} 9900uF 1000uF 3.8 D3 ESR=20m/3 IC = 0 V1 C1 DERA38-06 ESR5VOFF = 0 220uF 1 2 ESR4 20mVAMPL = 141.42 D3SBA60/SDG IC = 0 6.7mFREQ = 50 U1 R7 0 2SK3681-01S 2k Cd PARAMETERS: R15 100V/50Hz 220pF Np = 57 200k FB R6 Ns = 10 10k D2 R8 Nsub = 6 DERA15-01 10 4.7k C8 R3 R10 Lp = 360uH 2200pF 18k Nsp = {Ns/Np} U14 R1 Rsns Nsubp = {Nsub/Np} 0 TLP281 7.5k 100 C9 0.22 R11 R5 2200pF R14 100 D4 10k R13 DSC902-2 U12 100k IS LMV431 R4 U15 15k FA5541 R12 DERA22-02 ZCD 4.7 D5 ZCD VH 1 Lsub FB NC {Nsubp*Nsubp*Lp} C7 IS VCC 22pF FB GND OUT SSIC = 0 2 C12 C11 C2 1000pF 4700pF 33uF IC = 0 0 IC=10.19 (Value less than VCCON) 4
  5. 5. 3) Output voltage (19V) startup vs. initial condition (.IC) set (VCC startup is skipped) IC=4.2 V(FB) V(IS) TSFT = 1ms IC=18 (Value less than 19V) 19V Vout DC 19V Setup IC to shorten simulation time 38ms (Total job time ≈ 30minute) Total job time ≈ 50min. 5
  6. 6. 3) Output voltage (19V) startup vs. initial condition (.IC) set (VCC startup is skipped) K K1 K_Linear C6 COUPLING = 0.98 L1 = Ls 4700pF L2 = Lp L3 = Lsub C_T1 DY G865C15R D21 2200pF D22 Rp_T1 L1 0.001 4.7uH RSL1 1 2 VO_19V D23 D1 1m R2 C3 2 1 56k 2200pF D24 3300uFx3 Lp Ls C4 C5 RL {Lp} {Nsp*Nsp*Lp} 9900uF 1000uF 3.8 D3 ESR=20m/3 IC = 0 V1 C1 DERA38-06 ESR5VOFF = 0 220uF 1 2 ESR4 20mVAMPL = 141.42 D3SBA60/SDG IC = 139 6.7m IC=18FREQ = 50 (Value less than U1 R7 0 2SK3681-01S 19V) 2k Cd PARAMETERS: R15 100V/50Hz 220pF Np = 57 200k FB R6 Ns = 10 10k D2 R8 Nsub = 6 DERA15-01 10 4.7k C8 R3 R10 Lp = 360uH 2200pF 18k Nsp = {Ns/Np} U14 R1 Rsns Nsubp = {Nsub/Np} 0 TLP281 7.5k 100 C9 0.22 R11 R5 2200pF R14 100 D4 10k R13 DSC902-2 U12 100k IS LMV431 R4 U15 15k FA5541 R12 DERA22-02 ZCD 4.7 D5 ZCD VH 1 Lsub FB NC {Nsubp*Nsubp*Lp} C7 IS VCC 22pF FB GND OUT SSIC = 0 2 C12 C11 C2 1000pF 4700pF 33uF IC = 0 SSIC=1 IC = 10.19 to skip TSFT 0 IC=4.2  Soft start function is canceled by set SSIC=1 6
  7. 7. 4) Simulation result with all initial condition (IC) is set V(VCC) VCC=VSTOFF = 12.4V V(C1) V(VH) V(FB) V(IS) Vout DC 19V 19V Total job time = 20.3min. 7
  8. 8. 5) Simulation circuit with all initial condition (IC) is set K K1 K_Linear C6 COUPLING = 0.98 L1 = Ls 4700pF L2 = Lp L3 = Lsub C_T1 DY G865C15R D21 2200pF D22 Rp_T1 L1 0.001 4.7uH RSL1 1 2 VO_19V D23 D1 1m R2 C3 2 1 56k 2200pF D24 3300uFx3 Lp Ls C4 C5 RL IC=139 {Lp} {Nsp*Nsp*Lp} 9900uF 1000uF 3.8 D3 ESR=20m/3 IC = 18 V1 C1 DERA38-06 ESR5VOFF = 0 220uF 1 2 ESR4 IC=0/18 20mVAMPL = 141.42 D3SBA60/SDG IC = 139 6.7m IC=18FREQ = 50 IC=0/139 (Value less than U1 R7 0 2SK3681-01S 19V) 2k Cd PARAMETERS: R15 100V/50Hz 220pF Np = 57 200k FB R6 Ns = 10 10k D2 R8 Nsub = 6 DERA15-01 10 4.7k C8 R3 R10 Lp = 360uH 2200pF 18k Nsp = {Ns/Np} U14 R1 Rsns Nsubp = {Nsub/Np} 0 TLP281 7.5k 100 C9 0.22 R11 R5 2200pF R14 100 D4 10k R13 DSC902-2 U12 100k IS LMV431 R4 U15 15k FA5541 R12 DERA22-02 ZCD 4.7 D5 ZCD VH 1 Lsub FB NC {Nsubp*Nsubp*Lp} C7 IS VCC 22pF FB GND OUT SSIC = 1 2 C12 C11 IC=0/1 C2 1000pF 4700pF 33uF IC = 4.2 SSIC=1 IC = 10.19 IC=0/4.2 to skip IC=0/10.19 TSFT 0 IC=10.19 IC=4.2 (Value less than VCCON) 8

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