GE产品IC693APU300CA
IC693APU300CA 门极驱动电阻RG对IGBT的动态特性有较大的影响。如图,IGBT的GE之间有个寄生电容CGE,该电容一般随IGBT容量增大而增大。RG越小,IGBT的栅极电容充电就快,开关时间短,开关损耗就小,但RG较小时使得IGBT开通时di/dt变大,从而引起较高的du/dt,增加续流二极管恢复时的浪涌电压,因此选择RG时需要折中考虑。RGE的作用是防止IGBT栅极电荷积累,一般取值是10k~100k。
GE之间的稳压管一般取值16~18V,防止栅极出现电压尖峰。
三极管Q1、Q2构成驱动功率推挽放大。IGBT开通时,门极正向电压佳值为15V±10%;IGBT关断时,好加个负偏电压,好取值在-5~-10V之间。
采用对管驱动的目的在于,当Q1导通时,对IGBT的栅极电容充电,使IGBT导通,当IGBT需要关断时,Q2导通,为栅极电容提供放电回路,从而使IGBT基极电压迅速拉低,关断IGBT。如果没有下管,则无法为栅极电容放电,IGBT无法关断。
这里简单举例说明了变频器中IGBT的保护,关于IGBT的保护措施还有很多,找时间我们可以罗列一些(讲真的,有些东西一展开就没完了,O(∩_∩)O~还慢慢聊吧,唠着唠着就都有了)。
IC693APU300CA
APPLIED MATERIALS (AMAT) ASSY FAST COOLED VAPRSR, QII
APPLIED MATERIALS (AMAT) WAFER COMB P/N 0040-22026
LAM RESEARCH OUTER ELECTRODE ASSY P/N 839-020965-006
SIEMENS CONTROLLER, CPU SIMATIC 555-1105
AMAT ROBOT ELECTRONICS MODULE 772032-01(DAS 0190-a0029
TEL BASE, SHOWER 300TIN MB3M10-202605-15
APPLIED MATERIALS (AMAT) FOCUS FEEDTHROUGH 9090-01335
MYKROLIS CONTROLLER, PHOTO 250 PUMP EN ENC0M2CN0
DNS SPACER, LID HTP 984902
AMAT PC BASE UNIT-SPEC 0190-02112 9090-00629
AMAT WHC ASSY,GX 0090-A4890
AMAT KIT, MSPS REPLACEMENT 0240-B2650
EATON/VARIAN POW SUP 208V, 48-63HZ,1PH PS/NV-15NN33
AMAT PHVC ASSY Program.Heater/Vac Cont 0090-A2170
AMAT PNEUMATIC CONTROL UNIT, NOVA, REFLEXION 0190-07533
TEL GUIDE, LIGHT FGS7F690UVR-HT4 CT1380-102124-11
DISCO ASSY, ROBOT HAND (8") FKJL-910002-20
TEL PLATE, SHOWER, HTR ISOL IN MB3M10-203454-11
DNS CONTROLLER, IF-B SLAVE SK2000 2-39-71245
AMAT VALVE ASSY,PI MASS FLOW VERIFIER-3-PO 0190-26370
AMAT RF, ETO GEN EPS POWER SUPPLY IPSREP 0190-36684
AMAT ASM, X-SCALE, XYLT, SUPER GALAXY 0190-A1700
AMAT ASSY, SECTION, TRANSITION, C-276 W/ PLU 215-14480-
EBARA FLANGE, SET EIS C-3532-456-0001
AMAT SBC+SCSI BOARD+Y-CABLE ASSY 0990-A0021
AMAT HOOP ASSEMBLY, PRODUCER ETCH 0010-28101
ENI POLARA-260A POWER SUPPLY
NSK ACTUATOR FOR TESTER HANDLER X AXIS XY-HRS060EH202
APPLIED MATERIALS (AMAT) V17/V20 ASSY P/N 0010-C5920
ULTRATECH RING, TOP HDD STAINLESS STEEL CEPO22-BLR0110
APPLIED MATERIALS (AMAT) L-DOOR ASSEMBLY P/N 0010-31052
TEL BOAT, 300MM DIFFUSION DS2105-120761-51
TERADYNE INC PCB, FAIL VECTORMEMORY -REPAIR 950-572-03
TSXASY410
TSXASY800
TSXAEZ414
TSXAEZ801
TSXAEZ802
TSXAEY414
TSXAEY800
TSXAEY1600
TSXCAY22
TSXCAY41
TSXCTY2A
TSXCFY11
TSXDEP216
TSXDEF81
TSXDEZ32D2
TSXDEY16A4
TSXDEY16A5
TSXDEY16D2
TSXDEY16D3
TSXDEY64D2K
TSXDMZ28AR
TSXDMZ28DR
TSXDMZ28DT
Premium Processor 处理器
TSXP57103M Premium Premium 处理器,P57103M