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TL494CNS Scheda tecnica(PDF) 2 Page - Texas Instruments |
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TL494CNS Scheda tecnica(HTML) 2 Page - Texas Instruments |
2 / 19 page www.ti.com GND VCC Reference Regulator C1 Pulse-Steering Flip-Flop C1 1D DTC CT RT PWM Comparator + − Error Amplifier 1 ≈ 0.1 V Dead-Time Control Comparator Oscillator OUTPUT CTRL (see Function Table) 0.7 mA E1 C2 E2 + − Error Amplifier 2 1IN+ 1IN− 2IN+ 2IN− FEEDBACK REF 6 5 4 1 2 16 15 3 13 8 9 11 10 12 14 7 Q1 Q2 ≈ 0.7 V TL494 PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS074E – JANUARY 1983 – REVISED FEBRUARY 2005 FUNCTION TABLE INPUT TO OUTPUT FUNCTION OUTPUT CTRL VI = GND Single-ended or parallel output VI = Vref Normal push-pull operation FUNCTIONAL BLOCK DIAGRAM 2 |
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