缓冲电路设计方法

缓冲电路设计方法1. RCD 缓冲电路 Lm=L1+L2 Ls Cs Ds Rs ：电源线的线电感缓冲电路电感缓冲电容缓冲二极管缓冲电阻2. 关断波形 Io Vcesp Vcep Ed Vfp(Ds) ：集电极关断电流Ls引起的尖峰电压峰值Cs充电的峰值电压电源电压缓冲二极管的正向恢复电压 Vfp(Ds) Ls 应尽量小应尽量小 Lm Cs 应尽量小 应足够大3. 缓冲电路的选择(1)缓冲电容(Cs) Lm Io Vcep Ed ：1H/m2Ic(Rated)0.9Vces400V for AC 220V, 800V for AC 440V(2)缓冲电阻(Rs) f:开关频率4. 缓冲电路类型类型线路图备注A2-in-1半桥：独立缓冲器6-in-1全桥：集中缓冲器B2-in-1半桥：独立缓冲器6-in-1全桥：集中缓冲器C集中缓冲器5. 缓冲参数表1000V/GTR: Z- 系列型号Ic(DC)Vces缓冲器类型Cs(Ed=650V)Rs(Lm=1H,f=15kHz)Ds2DI30Z-10030A600VA(Lm=0.5H)0.033 F-2DI50Z-10050A0.094 F-2DI75Z-10075AB(Lm=1.0H)0.15 F1.2k/60WERG27-102DI100Z-100100A0.22 F1.0k/100WERG27-102DI150Z-100150A0.56 F330/230WERG27-101DI200Z-100200AC(Lm=1.0H)2.7 F68/400WERG27-10ERG77-10 1DI300Z-100300A6.4 F33/900WERG27-10ERG77-10 1200V/GTR: Z- 系列型号Ic(DC)Vces缓冲器类型Cs(Ed=800V)Rs(Lm=1H,f=15kHz)Ds2DI30Z-12030A1200VA(Lm=0.5H)0.022 F-2DI50Z-12050A0.068 F-2DI75Z-12075AB(Lm=1.0H)0.1 F2.2k/60WERG28-122DI100Z-120100A0.47 F330/100WERG28-122DI150Z-120150A0.56 F330/230WERG28-121DI200Z-120200AC(Lm=1.0H)2.2 F68/400WERG28-12ERG78-121DI300Z-120300A4.7 F33/900WERG28-12ERG78-12600V/IGBT系列*（L/F系列，部分N系列）型号Ic(DC)Vces缓冲器类型Cs(Ed=400V)Rs(Lm=1H,f=15kHz)Ds6MBI10*-06010A600VA(Lm=0.5H)0.033F-6MBI15*-06015A0.1F-6MBI20*-06020A0.16F-6MBI30*-06030A0.33F-6MBI50*-06050A1.0F-2MBI50*-0600.33F-6MBI75*-06075AB(Lm=1.0H)1.6F16/420WERE24-062MBI75*-0600.47F56/420WERE24-066MBI100*-060100A2.2F10/750WERE24-062MBI100*-0600.68F22/750WERE24-062MBI150*-060150A1.8F16/1.7kWERE24-062MBI200*-060200A3.3F6.8/3.0kWERE24-062MBI300*-060300AC(Lm=1.0H)10.0F2.2/6.8kWERE24-06ERE74-06 2MBI400*-060400A18.0F1.6/12kWERE24-062PERE74-062P 1200V/IGBT系列*（L/F系列，部分N系列）型号Ic(DC)Vces缓冲器类型Cs(Ed=800V)Rs(Lm=1H,f=15kHz)Ds6MBI8*-1208A1200VA(Lm=0.5H)0.0068F-6MBI15*-12015A0.022F-6MBI25*-12025A0.068F-2MBI25*-12030A0.022F-6MBI50*-12050A0.068F-2MBI75*-12075AB(Lm=1.0H)0.1F220/420WERG28-122MBI100*-120100A0.47F56/750WERG28-122MBI150*-120150A0.56F47/1.7kWERG28-121MBI200*-120200AC(Lm=1.0H)2.2F10/3.0kWERG28-12ERG78-12 1MBI300*-120300A4.7F5.6/6.8kWERG28-12ERG78-12 6. 低电感线路的基本结构(1) 叠层导线板(2) 叠层导线条7. 电容缓冲器电路（集中缓冲)缓冲电容的选择 L Io Vceo Ed ：分布电感：关断时的Ic ：尖峰电压：DC电源电压8. 集中缓冲器电容（参考值）元件规格栅极驱动条件电源电路的分布电感(H)缓冲电容(F)-Vge(V)Rg()600V50A51551-0.4775A33100A24150A160.2