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SP000221225 Datasheet(PDF) 9 Page - Infineon Technologies AG |
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SP000221225 Datasheet(HTML) 9 Page - Infineon Technologies AG |
9 / 14 page PROFET® ITS 640S2 Infineon Technologies AG Page 9 2006-Mar-28 GND disconnect PROFET V ST IS OUT GND bb V bb Ibb 6 2 4 3 5 IN OUT 1 7 V IN VST VIS V GND Any kind of load. In case of Input=high is VOUT ≈ VIN - VIN(T+) . Due to VGND >0, no VST = low signal available. GND disconnect with GND pull up PROFET V ST IS OUT GND bb V bb 6 2 4 3 5 IN OUT 1 7 V IN VSTVIS V GND Any kind of load. If VGND > VIN - VIN(T+) device stays off Due to VGND >0, no VST = low signal available. Vbb disconnect with energized inductive load PROFET V ST IS OUT GND bb V bb 6 2 4 3 5 IN OUT 1 7 high Normal load current can be handled by the PROFET itself. Vbb disconnect with charged external inductive load PROFET V ST IS OUT GND bb 6 2 4 3 5 IN OUT 1 7 V bb high D R L L If other external inductive loads L are connected to the PROFET, additional elements like D are necessary. Inductive Load switch-off energy dissipation PROFET IN ST OUT GND Vbb = E E E EAS bb L R ELoad IS 1 2 5 3 4 6 7 OUT Vbb Energy stored in load inductance: EL = 1/2·L·I 2 L While demagnetizing load inductance, the energy dissipated in PROFET is EAS= Ebb + EL - ER= ∫ VON(CL)·iL(t) dt, with an approximate solution for RL > 0 Ω: EAS= IL·L 2·RL · (Vbb + |VOUT(CL)|)· ln (1+ IL·RL |VOUT(CL)| ) |
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