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MOC2R60-10 Datasheet(PDF) 5 Page - Motorola, Inc |
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MOC2R60-10 Datasheet(HTML) 5 Page - Motorola, Inc |
5 / 8 page MOC2R60-10 MOC2R60-15 5 Motorola Optoelectronics Device Data Figure 13. Delay Time, t(d), and Fall Time, t(f), versus LED Trigger Current IFT, LED TRIGGER CURRENT (mA) 100 0.1 10 20 30 40 50 60 10 1 t(d) t(f) t(delay), t(f) versus IFT The POWER OPTO Isolators turn on switching speed con- sists of a turn on delay time t(d) and a fall time t(f). Figure 13 shows that the delay time depends on the LED trigger cur- rent, while the actual trigger transition time t(f) stays constant with about one micro second. The delay time is important in very short pulsed operation because it demands a higher trigger current at very short trig- ger pulses. This dependency is shown in the graph IFT ver- sus LED PW. The turn on transition time t(f) combined with the power triacs turn on time is important to the power dissipation of this device. SCOPE IFT VTM t(d) t(f) ZERO CROSS DETECTOR EXT. SYNC Vout FUNCTION GENERATOR PHASE CTRL. PW CTRL. PERIOD CTRL. Vo AMPL. CTRL. IFT VTM 10 k Ω DU T 100 Ω ISOL. TRANSF. A C 115 VAC Figure 14. Switching Time Test Circuit Figure 15. Typical Application Circuit VCC Load MOV R2 C1 R1 MOC2R60 Select the value of R1 according to the following formulas: (1) R1 = (VCC – VF) / Max. IFT (on) per spec. (2) R1 = (VCC – VF) / 0.050 Typical values for C1 and R2 are 0.01 µF and 39 Ω, respectively. You may adjust these values for specific applications. The maximum recommended value of C1 is 0.022 µF. See application note AN1048 for additional information on component values. The MOV may or may not be needed depending upon the characteristics of the applied AC line voltage. For applications where line spikes may exceed the 600 volts rating of the MOC2R60, an MOV is required. |
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