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SI4724CY Datasheet(PDF) 7 Page - Vishay Siliconix |
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SI4724CY Datasheet(HTML) 7 Page - Vishay Siliconix |
7 / 8 page Vishay Siliconix SPICE Device Model Si4724CY CONCLUSIONS The model of the SI4724CY driver correlates very well with the manufacturer’s datasheet and meets all of the items listed in the Statement of Work (SOW). This data should be verified against actual hardware for further confirmation. The output voltage (1.4 V) is somewhat less than the 1.6 V that should be achieved with an input pulse width of 545us (0.545u/4u). The reason for this is unknown. The variation of the Vref and logic input voltage levels with VDD are not modeled but could be added. The reader is referred to three references on this topic. 1. “Power Requirements for Power MOSFET Models”, I Budihardjo, Peter Lauritzen, A. Mantooth, IEEE Transactions on Power Electronics, Vol 12, No. 1, Jan 1997 2. “An Improved Mosfet Spice Model, Supports the development of Low Dropout Voltage Regulators”, Steven M. Sandler, EDATools Café & Internal AEi White Paper, www.edatoolscafe.com/DACafe/TECHNICAL/ Papers/Mosfet_paper.htm 3. “SPICE Model for TMOS”, C.E. Cordonnier, Motorola Application Note, AN1043, 1989. 7 Document Number: 72365 S-50464 Rev. B, 14-Mar-05 www.vishay.com |
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