Datenblatt-Suchmaschine für elektronische Bauteile |
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SI8518-B-GM Datenblatt(PDF) 9 Page - Silicon Laboratories |
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SI8518-B-GM Datenblatt(HTML) 9 Page - Silicon Laboratories |
9 / 24 page Si85xx Preliminary Rev. 0.1 9 Figure 7 shows the Si85xx thermal characteristics over the temperature range of –40 to +125 ºC. Series inductance is constant at 2 nH (max) across this same temperature range. Figure 7. Series Resistance Thermal Characteristics 2.6. Leading Edge Noise Suppression High-amplitude spikes on the leading edge of the primary switching waveforms can cause the PWM latch to be erroneously reset at the start of the switching cycle when operating in current mode control. To prevent this problem, leading edge blanking is commonly used to disable the current comparator during the early portion of the primary-side switching cycle. The Si85xx eliminates leading-edge noise spikes by including them in the signal integration. As shown in the output waveform of Figure 8, noise present in the input waveform is eliminated without the use of blanking. Figure 8. Leading-Edge Noise Suppression Waveforms (200 kHz, 9.3A Load) (Si8502 waveform measured directly on OUT pin with no external filter) 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 -20 0 20 40 60 80 100 120 Temperature (°C) Current Sense Transformer Si8502 |
Ähnliche Teilenummer - SI8518-B-GM |
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Ähnliche Beschreibung - SI8518-B-GM |
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