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IR2238Q Datasheet(PDF) 1 Page - International Rectifier |
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IR2238Q Datasheet(HTML) 1 Page - International Rectifier |
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1 / 17 page  Block Diagram 3-PHASE AC Motor Controller IC Features • Floating channel up to +1200V • “soft” over-current shutdown turns off output • Integrated desaturation circuit • Two stage turn on output for di/dt control • Integrated brake IGBT driver with protection • Voltage feedback sensing function • Separate pull-up/pull-down output drive pins • Matched delay outputs • Under voltage lockout with hysteresis band • Programmable deadtime • Hard shutdown function Product Summary VOFFSET 1200V max. IO+/- (min.) 220mA/460mA VOUT 12.5V - 20V Brake (Io+/- min) 40mA/80mA Deadtime Asymmetry Skew (max.) 145nsec Deadtime (typ. with RDT=39k Ω) 1 µsec DESAT Blanking time (typ.) 3.0 µsec DSH, DSL input voltage threshold (typ.) 8.0V Soft shutdown duration time (typ.) 6.0 µsec Voltage feedback matching delay time (max.) 125nsec www.irf.com 1 Description The IR2238Q is a high voltage, 3-phase IGBT driver best suited for AC motor drive applications. Integrated desaturation logic provides all mode of overcurrent protection, including ground fault protection. Soft shut- down is predominantly initiated in the event of overcurrent followed by turn-off of all six outputsf. A shutdown input is provided for a customized shut- down function. The DT pin allows external resistor to program the deadtime. Output drivers have separate turn on/off pins with two stage turn-on output to achieve the desired di/dt switching level of IGBT. Voltage feedback provides accurate volts *seconds measurement. IR2238Q Data Sheet No. PD6022 8 (Refer to Lead Assignments for correct pin configuration). This diagram shows electrical connections only. Package 64-Lead MQFP HOP1,2,3 HON1,2,3 LOP1,2,3 LON1,2,3 BR VS1,2,3 VB1,2,3 COM LIN1,2,3 HIN1,2,3 FAULT VFH1,2,3 VCC VSS BRIN DSH1,2,3 3 uP,Control 15V DC BUS IR2238Q U V W Motor 3 VFL1,2,3 DSL1,2,3 VCC SD VCC DSB LOQ1,2,3 HOQ1,2,3 DT |
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