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AN1762 Datasheet(PDF) 31 Page - STMicroelectronics |
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AN1762 Datasheet(HTML) 31 Page - STMicroelectronics |
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31 / 53 page  31/53 AN1762 APPLICATION NOTE Figure 33. Thermal Data inputs and results. Commutatiion Time Dissipating Pw Ecom = 6.78E-05 [J] 2Vs · I · Tcom · Tload · fSW Quiescent Dissipating Pw Pq = 1.32E-01 [W] Vs · Iq Total Dissi- pating Power P = 1.36E+00 [W] ·(Erise + Efall + Eload + Ecom) + Pq 2 T --- Input D ata Package SO 24 Copper Area 4.0 1÷10 sq. cm Copper Area is on Sam e side of the device G round Layer N/A Am bient Tem perature 50 -25 ÷ 100 ºC R esults Therm al Resistance Junction to Am bient 53.36 ºC / W Therm al Resistance Junction to Pins / Slug 14.00 ºC / W Estim ated Junction Tem perature 122.66 ºC Estim ated Pins / Slug Tem perature 103.60 |
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