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M57950L Datasheet(PDF) 5 Page - Mitsubishi Electric Semiconductor |
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M57950L Datasheet(HTML) 5 Page - Mitsubishi Electric Semiconductor |
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5 / 5 page  Feb.1999 MITSUBISHI HYBRID ICs M57950L HYBRID IC FOR DRIVING TRANSISTOR MODULES M57950L Typical application circuit M57950L 12 34 56 78 +5V SINK 10mA VIN VEE + Cext R2 Rext VCC VO IO IC 1/2QM50DY etc. + C1 + C2 50/60HZ AC VIN t 0 VI –IO 0 IOH(IB1) IOLP(IB2) t t VO 0 VOH VOL R1 ZD LOAD INPUT DRIVER TTL etc. EXPLANATION OF FUNCTION (cf. Fig. 2, 3, 4, and 5) (1) With low input level (Vin=0 ~ 1V) Tr1 ...... OFF, Tr2 ...... ON The base terminal of transistor module is reverse biased with re- spect to its emitter by reverse power supply VEE. (2) With high input level (Vin=4 ~ 5V) Tr1 ...... ON, Tr2 ...... OFF The base terminal of transistor module is forward biased and drived by the current IOH through the resistor Rext. Note: IOH and IOLP correspond to base forward current IB1 and base reverse current IB2 of the transistor module to be driven respectively. (3) With low input level (Vin=0 ~ 1V) Tr1 ...... OFF, Tr2 ...... ON The base terminal of transistor module is reverse biased as stated in (1) after flowing reverse recovery pulse current IOLP. The steady reverse base current is limited by the internal base-emit- ter resistor RBE of the transistor module. M57950L Typical operating waveform |
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