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TL494CD Scheda tecnica(PDF) 5 Page - ON Semiconductor |
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TL494CD Scheda tecnica(HTML) 5 Page - ON Semiconductor |
5 / 14 page TL494, NCV494 http://onsemi.com 5 Figure 1. Representative Block Diagram Figure 2. Timing Diagram 6 RT CT 5 4 Deadtime Control Oscillator 0.12V 0.7V 0.7mA + 1 − − + − + + 2 − D Q Ck − + + − 3.5V 4.9V 13 Reference Regulator Q1 Q2 8 9 11 10 12 VCC VCC 12 3 15 16 14 7 Error Amp 1 Feedback PWM Comparator Input Ref. Output Gnd UV Lockout Flip− Flop Output Control Error Amp 2 Deadtime Comparator PWM Comparator Q Capacitor CT Feedback/PWM Comp. Deadtime Control Flip−Flop Clock Input Flip−Flop Q Flip−Flop Q Output Q1 Emitter Output Q2 Emitter Output Control This device contains 46 active transistors. |
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