MicrochipMIC4609600V三相MOFET-IGBT驱动方案.docx

Microchip MIC4609 600V三相MOFET－IGBT驱动方案时间：2016-11-10 10:01:55?????? 作者：Microchip?????? 来源：中电网Microchip公司的MIC4609是600V三相MOFET/IGBT驱动器,栅极驱动电压高达20V,带可编重起延迟的过流保护,1A栅极驱动器,输入滤波器时间300ns,结温-40℃到+125℃,主要用在3相马达驱动,现场控制(FOC),白色家电,无刷直流风扇.本文介绍了MIC4609主要特性,功能框图和应用电路,以及MIC4609马达驱动评估板主要特性,电路图,材料清单和PCB设计图.The MIC4609 features a 300 ns typical input filteringtime to prevent unwanted pulses and a 550 ns ofpropagation delay.The MIC4609 has TTL inputthresholds.The robust operation of the MIC4609 ensures that theoutputs are not affected by supply glitches, High Side(HS) ringing below ground,or HS slewing withhigh-speed voltage transitions.Undervoltageprotection is provided on both the low-side andhigh-side drivers.The MIC4609 is available in a 28-pin wide SOICpackage.The MIC4609 has an operating junctiontemperature range of -40℃ to +125℃.MIC4609主要特性:? Gate Drive Supply Voltage up to 20V? Overcurrent Protection with ProgrammableRestart Delay? 1A Gate Drivers? Dual (HI/LI) Inputs per Phase? Fault Signal Asserts on Overcurrent andVDD UVLO? TTL Input Thresholds? 300 ns Typical Input Filtering Time? Shoot-Through Protection? Low-Power Consumption? Supply Undervoltage Protection? -40℃ to +125℃ Junction Temperature RangeMIC4609典型应用:? 3-Phase Motor Drive? Field-Oriented Control (FOC)? White Goods Appliances? Brushless DC Fans图1.MIC4609功能框图图2.MIC4609典型应用电路:300V 3相马达驱动器图3.MIC4609典型应用电路:A相马达驱动器MIC4609马达驱动评估板The MIC4609 motor driver evaluation board demonstrates the capabilities of Microchip’s MIC4609 High Voltage, 3-Phase motor gate driver. The evaluation board contains the MIC4609 3-Phase driver, (6) IGBTs configured as a 3-Phase bridge, an overcurrent protection circuit and current/voltage sensing that can be fed back to an external controller for closed loop control of a motor.MIC4609马达驱动评估板主要特性:Direct motor connection to the board?6 independent PWM input channels?Current sensing on 2 phases?Overcurrent protection?Phase and bus voltage sensing?图4.MIC4609马达驱动评估板外形图图5.MIC4609马达驱动评估板电路图MIC4609马达驱动评估板