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Look at Ritchie Burnetts site forlots of circuits and theory - its excellent. Richie has been very helpfulto me particularily with the new solid state coil. I found these papers very helpful: Application Note AN 556 Introduction to Power Supplies - describes all the various topologies. Application Note AN 558 Introduction to Power Mosfets and their applications Application Note AN 936 The Do's and Don't of using Mos-Gated Transistors Application Note An-937 Gate Drive Characteristics Application Note An-941 Paralleling HEXFET® power MOSFETs Application Note An-944 Use Gate Charge to Design the Gate Drive Circuit These are also of interest Power MOSFET Basics (in .pdf format) Paralleling of Power MOSFETs for Higher Power Output (in .pdf format) IGBT or MOSFET: Choose Wisely (in .pdf format) (New) WARP Speed IGBTs - Fast Enough To Replace Power MOSFETs in Switching Power Supplies at over 100 kHz Available in pdf and html MOSFET Failure Modes in the Zero-Voltage-Switched Full-Bridge Philips Introduction to Power Semiconductors (Power Semiconductor Applications Chapter 1) Switched Mode Power Supplies (Power Semiconductor Applications Chapter 2) AN 7244 Understanding Power Mosfets Application note 22 Considerations for driving Mosfets dn62 voltage mode versus current mode u137 mosfet gate drive circuits Just in AN1102-D Interfacing Power MOSFETs to Logic Devices SMPSRM-D Switchmode Power Supply Reference Manual AN918-D Paralleling Power MOSFETs in Switching Applications AN929-D Insuring Reliable Performance from Power MOSFETs lh_ap_14 Requirements for Power MOSFETs Connected in Parallel |