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33981 Fiches technique(PDF) 30 Page - Freescale Semiconductor, Inc |
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33981 Fiches technique(HTML) 30 Page - Freescale Semiconductor, Inc |
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30 / 37 page ![]() Analog Integrated Circuit Device Data 30 Freescale Semiconductor 33981 TYPICAL APPLICATIONS POWER DISSIPATION cycle of 95%. This value is far from the 150ºC maximum guaranteed junction. Figure 43. Junction Temperature vs. Duty Cycle CONCLUSION Knowing the application conditions, this document explained how to calculate power dissipation during on-state and switching phases and the junction temperature for the 33981 when controlling a DC motor. A concrete example with a 200 W DC motor was given in section DC Motor 200 W. The same principle can be used for other DC motor and other environmental conditions. 0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 0 10 20 30 40 50 60 70 80 90 100 Dutycycle (%) |
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