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ZXRD1050PQ16 Datasheet(PDF) 21 Page - Diodes Incorporated |
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ZXRD1050PQ16 Datasheet(HTML) 21 Page - Diodes Incorporated |
21 / 28 page SimpleSync TM and Shoot-Through Steady state operation under constant load gives an excellent indication of the ZXRD series performance and also demonstrates how well SimpleSync TM w o r k s. T he Si mp le Sy n cTM technique drives the synchronous MOSFET gate using the overwinding on the main inductor. It also uses the high speed suppression characteristics of the ferrite bead to prevent shoot through currents. Fig.3 shows the gate waveforms for the main and synchronous MOSFET devices (Zetex ZXM64N02X). Fig3. Main & Synchronous gate waveforms Output Voltage Ripple Output voltage ripple is shown in Fig.4 and Fig. 5 for load currents of 0.5A and 4A respectively. Output voltage ripple will be dependant, to a very large extent, on the output capacitor ESR. (see Applications Section for ripple calculation). Fig.4 0.5A Main & VOUT Waveforms Fig.5 4A Main & VOUT Waveforms Fig.2. Startup Waveform for 3.3V output . 21 ZXRD1000 SERIES ISSUE 4 - OCTOBER 2000 |
Similar Part No. - ZXRD1050PQ16 |
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