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MJ10005 bảng dữ liệu(PDF) 5 Page - ON Semiconductor |
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5 / 8 page MJ10005 5 Motorola Bipolar Power Transistor Device Data SWITCHING TIMES NOTE (continued) For the designer, there is minimal switching loss during storage time and the predominant switching power losses occur during the crossover interval and can be obtained us- ing the standard equation from AN–222. PSWT = l/2 VCC IC (tc) f In general, trv + tfi ] tc. However, at lower test currents this relationship may not be valid. As is common with most switching transistors, resistive switching is specified at 25 _C and has become a benchmark for designers. However, for designers of high frequency con- verter circuits, the user oriented specifications which make this a “SWITCHMODE” transistor are the inductive switching speeds (tc and tsv) which are guaranteed at 100_C. 3 Figure 8. Turn–On Time IC, COLLECTOR CURRENT (AMP) 2 0.7 0.1 3 20 0.2 1 5 td tr 2 7 1 0.3 0.5 Figure 9. Turn–Off Time IC, COLLECTOR CURRENT (AMP) 0.7 0.2 0.1 VBE(off) = 5 V VCC = 250 V IC/IB = 25 TJ = 25°C tf ts 0.3 0.5 VCC = 250 V IC/IB = 25 TJ = 25°C 10 3 20 1 5 2 7 10 1 0.07 0.05 RESISTIVE SWITCHING PERFORMANCE Figure 10. Thermal Response t, TIME (ms) 1.0 0.01 0.01 0.7 0.5 0.3 0.2 0.1 0.07 0.05 0.03 0.02 0.02 0.05 0.1 0.2 0.5 1.0 2.0 5.0 10 20 50 100 200 1.0 k 500 Z θJC (t) = r(t) RθJC R θJC = 1.0°C/W MAX D CURVES APPLY FOR POWER PULSE TRAIN SHOWN READ TIME AT t1 TJ(pk) – TC = P(pk) Z θJC(t) P(pk) t1 t2 DUTY CYCLE, D = t1/t2 D = 0.5 0.2 0.05 0.02 0.01 SINGLE PULSE 0.1 |
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