Project Analog - August 2008 - (Page 7) fiG 4 floaTiNG BiaS GaTE DrivE circuiT Contents Viewpoint Gate Drive Schemes for Motor Control Applications Considerations When Selecting the Proper MOSFET Driver Power Modules for Variable-Speed Motor Control Analog news microchiP RESOURCES Motor Control Design Center http://www.microchip.com/stellentidcplg?IdcService= SS_GET_GE&nodeId=2125¶m=en026178 fiG 5 rEmoval of NEGaTivE DrivE volTaGE Training Resources for Motor Control http://www.microchip.com/stellent/idcplg?IdcService= SS_GET_E&nodeId=2125¶m=en535758 Motor Control Design Solutions Brochure http://ww1.microchip.com/downloads/en/ DesignCenter/00896e.pdf Recommended Analog Peripherals for Motor Control http://www.microchip.com/stellent/idcplg?IdcService= SS_GET_PAGE&nodeId=2125¶m=en026694 AN898: Determining MOSFET Driver Needs for Motor Drive Applications http://ww1.microchip.com/downloads/en/AppNotes/ 00898a.pdf and mounted directly to the IGBT/MOSFET module. With this scheme, the only signal that needs to be brought to the module is the small signal line that drives the opto-isolator. This is more easily accomplished since there is less current flowing in this line. The negative bias is often required for these applications in order to keep the IGBT in the off state. Though this scheme does require much more circuitry, it does provide a very robust solution for driving large gate capacitances in high-power applications. The Vsupply voltage that feeds the flyback topology can be a low 7 · PrOjECT ANAlOG · VOluME 2 / NuMbEr 5 voltage or high voltage supply. A low voltage supply of 10V or less will make the flyback design easier, as biasing of the control circuitry can be done directly off of this voltage. High voltage flyback ICs that incorporate the high voltage MOSFET and biasing circuitry are available, which make low-power flybacks like this one easy to design. Microchip analog page Motor Control Design Center Sample center microchipDIRECT Reference designs/ app notes Technical training http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2125¶m=en026178 http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2125¶m=en026178 http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2125¶m=en535758 http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2125¶m=en535758 http://ww1.microchip.com/downloads/en/DesignCenter/00896e.pdf http://www.microchip.com http://ww1.microchip.com/downloads/en/DesignCenter/00896e.pdf http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=79&redirects=analog http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2125¶m=en026694 http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=79&redirects=analog http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2125¶m=en026694 http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2125¶m=en026178 http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2125¶m=en026178 http://sample.microchip.com/Default.aspx?testCookies=true http://ww1.microchip.com/downloads/en/AppNotes/00898a.pdf http://ww1.microchip.com/downloads/en/AppNotes/00898a.pdf http://www.microchipdirect.com/catalogselection.aspx?returnURL=default.aspx http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1469&filter1=function&redirects=appnotes http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1469&filter1=function&redirects=appnotes http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1423
Table of Contents Feed for the Digital Edition of Project Analog - August 2008 Project Analog - August 2008 Contents Viewpoint About Project Analog Sponsor Gate Drive Schemes for Motor Control Applications Considerations When Selecting the Proper MOSFET Driver for Your Application Power Modules for Variable-Speed Motor Control Efficient Motor/Controls Save Terrawatt-Hours/Year Analog News Contact Microchip Treelink Microchip Advanced Parts Selector (MAPS) Project Analog - August 2008 Project Analog - August 2008 - Project Analog - August 2008 (Page Cover1) Project Analog - August 2008 - Contents (Page 2) Project Analog - August 2008 - Viewpoint (Page 3) Project Analog - August 2008 - About Project Analog Sponsor (Page 4) Project Analog - August 2008 - Gate Drive Schemes for Motor Control Applications (Page 5) Project Analog - August 2008 - Gate Drive Schemes for Motor Control Applications (Page 6) Project Analog - August 2008 - Gate Drive Schemes for Motor Control Applications (Page 7) Project Analog - August 2008 - Considerations When Selecting the Proper MOSFET Driver for Your Application (Page 8) Project Analog - August 2008 - Considerations When Selecting the Proper MOSFET Driver for Your Application (Page 9) Project Analog - August 2008 - Power Modules for Variable-Speed Motor Control (Page 10) Project Analog - August 2008 - Power Modules for Variable-Speed Motor Control (Page 11) Project Analog - August 2008 - Power Modules for Variable-Speed Motor Control (Page 12) Project Analog - August 2008 - Power Modules for Variable-Speed Motor Control (Page 13) Project Analog - August 2008 - Efficient Motor/Controls Save Terrawatt-Hours/Year (Page 14) Project Analog - August 2008 - Efficient Motor/Controls Save Terrawatt-Hours/Year (Page 15) Project Analog - August 2008 - Efficient Motor/Controls Save Terrawatt-Hours/Year (Page 16) Project Analog - August 2008 - Efficient Motor/Controls Save Terrawatt-Hours/Year (Page 17) Project Analog - August 2008 - Analog News (Page 18) Project Analog - August 2008 - Contact Microchip (Page 19) Project Analog - August 2008 - Treelink (Page 20) Project Analog - August 2008 - Microchip Advanced Parts Selector (MAPS) (Page 21) Project Analog - August 2008 - Microchip Advanced Parts Selector (MAPS) (Page Cover4)
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