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2SD106AI Folha de dados(PDF) 9 Page - List of Unclassifed Manufacturers |
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9 / 12 page SCALE Driver 2SD106AI Data Sheet IGBT-Driver.com Page 9 Collector sense and dimensioning of Rth The 2SD106AI dual driver has a collector- sense circuit to protect the power semiconductors. It is shown in Fig. 4 Its basic operating mode can be ob- tained from the brochure entitled: “Description and Application Manual for Scale Drivers”. To correspond more effectively to the turn-on characteristic of the IGBTs, the SCALE drivers do not use a static reference voltage to compare the voltage at the collector. Instead, the reference is used as shown in Fig. 5. Value Rth Reaction time Vth1 Vth2 VCE(off) 22k 4.9 s 4.8V 3.2V 2.35V (1 Diode) 27k 5.7 s 5.6V 3.9V 3.05V (1 Diode) 33k 6.8 s 6.5V 4.7V 3.25V (2 Diodes) 39k 7.6 s 7.3V 5.6V 4.15V (2 Diodes) 47k 9 s 8.4V 6.8V 5.35V (2 Diodes) Table 1 Reference resistor, reaction time and turn-off threshold Notes on Table 1 The values for “Vth1” and “Vth2” are listed in Table 1 as a function of the reference resistance Rth. The value in the “Vth1” column corresponds to the voltage threshold after the response time has elapsed. The value in the “Vth2” column corresponds to the voltage which is set up statically across the resistor Rth. This static value is typically reached after between 10 and 15µs. Rm V+ V+ Ca Cx Rthx Gx Ex Rthx RGx Dm (2 x 1N4007) SCALE Driver Module IGD 001 4 5 150uA 1.4mA OVERCURRENT MEASURING Fig. 4 Collector-sense circuit principle |
Nº de peça semelhante - 2SD106AI |
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Descrição semelhante - 2SD106AI |
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