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EMI7112 Datasheet(PDF) 5 Page - ON Semiconductor |
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EMI7112 Datasheet(HTML) 5 Page - ON Semiconductor |
5 / 6 page EMI7112 www.onsemi.com 5 Figure 5. Positive TLP I−V Curve Figure 6. Negative TLP I−V Curve VC, VOLTAGE (V) 25 014 12 24 6 10 8 VC, VOLTAGE (V) −25 0 −14 −12 −10 −2 −4 −6 −8 NOTE: TLP parameter: Z0 = 50 W, tp = 100 ns, tr = 300 ps, averaging window: t1 = 30 ns to t2 = 60 ns. VIEC is the equivalent voltage stress level calculated at the secondary peak of the IEC 61000−4−2 waveform at t = 30 ns with 2 A/kV. See TLP description below for more information. 20 15 10 5 0 −20 −15 −10 −5 0 Transmission Line Pulse (TLP) Measurement Transmission Line Pulse (TLP) provides current versus voltage (I−V) curves in which each data point is obtained from a 100 ns long rectangular pulse from a charged transmission line. A simplified schematic of a typical TLP system is shown in Figure 7. TLP I−V curves of ESD protection devices accurately demonstrate the product’s ESD capability because the 10s of amps current levels and under 100 ns time scale match those of an ESD event. This is illustrated in Figure 8 where an 8 kV IEC 61000−4−2 current waveform is compared with TLP current pulses at 8 A and 16 A. A TLP I−V curve shows the voltage at which the device turns on as well as how well the device clamps voltage over a range of current levels. Figure 7. Simplified Schematic of a Typical TLP System DUT L S ÷ Oscilloscope Attenuator 10 M W VC VM IM 50 W Coax Cable 50 W Coax Cable Figure 8. Comparison Between 8 kV IEC 61000−4−2 and 8 A and 16 A TLP Waveforms |
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