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| IR IRS26302D三相IGBT驱动方案 | |||||
作者：IR 文章来源：IR 点击数： 更新时间：2008-2-29  |
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IRS26302DJPBF FULLY PROTECTED 3-PHASE BRIDGE PLUS ONE GATE DRIVER The IRS26302DJPBF are high voltage, high speed power MOSFET and IGBT drivers with three independent high and low side referenced output channels for 3-phase applications. An additional low side driver is included for PFC or Brake IGBT driving operation. Proprietary HVIC technology enables rugged monolithic construction. Logic inputs are compatible with CMOS or LSTTL outputs, down to 3.3V logic. Three current trip functions that terminate all seven outputs can be derived from three external shunt resistors. Each overcurrent trip functions consists of detecting excess current across a shunt resistor on DC+ bus, on DC- bus and on Brake or PFC circuitry. An enable function is available to terminate all outputs simultaneously and is provided through a bidirectional pin combined with an open-drain FAULT pin. Fault signal is provided to indicate that an overcurrent or undervoltage shutdown has occurred. Overcurrent fault conditions are cleared automatically after an externally programmed delay via an RC network connected to the RCIN input. A diagnostic feature can give back to the controller the fault cause (UVcc, DC- or DC- overcurrent) and address a fault register. The output drivers feature a high pulse current buffer stage. Propagation delays are matched to simplify use in high frequency applications designed for minimum driver cross conduction. The floating channel can be used to drive N-channel power MOSFET’s or IGBT’s in the high side configuration which operates up to 600 V. 主要特性： Features Floating channel designed for bootstrap operation, fully operational to +600 V Tolerant to negative transient voltage – dV/dt immune Full three phase gate driver plus one low side driver Undervoltage lockout for all channels Cross-conduction prevention logic Power-on reset Integrated bootstrap diode for floating channel supply Over current protection on: DC-(Itrip), DC+(Ground fault) PFCtrip/BRtrip (PFC/Brake protection). Single pin fault diagnostic function Diagnostic protocol to address fault register Self biasing for ground fault detection high voltage circuit 3.3 V logic compatible Lower di/dt gate drive for better noise immunity Externally programmable delay for automatic fault clear RoHS compliant 典型应用： Air conditioners inverters Micro/Mini inverter drives General purpose inverter Motor control  图1。IRS26302DJPBF方框图  图2。IRS26302D功能方框图  图3。IRS26302DJPBF典型应用电路 |
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