IR21381QPBF

Product Summary

The IR21381QPBF is a 3-phase ac motor controller IC. It is suited for AC motor drive applications. Integrated desaturation logic provides all mode of overcurrent protection, including ground fault protection. The sensing desaturation input of the IR21381QPBF is provided by active bias stage to reject noise. Soft shutdown is predominantly initiated in the event of overcurrent followed by turnoff of all six outputs. A shutdown input is provided for a customized shutdown function. The DT pin of the IR21381QPBF 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 volt x second measurement.

Parametrics

IR21381QPBF absolute maximum ratings: (1)VFLT FAULT/N output voltage: -0.3 to VCC + 0.3 V; (2)VF Feedback output voltage: -0.3 to VCC + 0.3 V; (3)VDSH High side desat/feedback input voltage: VB 1,2,3 - 25 to VB 1,2,3 + 0.3 V; (4)VDSL Low side desat/feedback input voltage: VCC - 25 to VCC + 0.3 V; (5)VBR Brake output voltage: VCOM -0.3 to VCC + 0.3 V; (6)dVs/dt Allowable offset voltage slew rate — 50 V/ns; (7)PD Package power dissipation @ TA ≤ +25℃: 2.0 W; (8)RthJA Thermal resistance, junction to ambient: 60 ℃/W; (9)TJ Junction temperature: 125 ℃; (10)TS Storage temperature: -55 to 150 ℃; (11)TL Lead temperature (soldering, 10 seconds): 300 ℃.

Features

IR21381QPBF features: (1)Floating channel up to +600V or +1200V; (2)Soft over-current shutdown turns off desaturated output; (3)Integrated desaturation circuit; (4)Active biasing on sensing desaturation input; (5)Two stage turn on output for di/dt control; (6)Integrated brake IGBT driver with protection; (7)Voltage feedback sensing function; (8)Separate pull-up/pull-down output drive pins; (9)Matched delay outputs; (10)Under voltage lockout with hysteresis band; (11)Programmable deadtime; (12)Hard shutdown function.

Diagrams