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AN4638 Datasheet(PDF) 2 Page - STMicroelectronics |
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AN4638 Datasheet(HTML) 2 Page - STMicroelectronics |
2 / 23 page Contents AN4638 2/23 DocID027309 Rev 1 Contents 1 Two-switch forward converter general concepts . . . . . . . . . . . . . . . . . . 3 2 STMicroelectronics V and HB series IGBTs . . . . . . . . . . . . . . . . . . . . . . 5 3 Electrical specifications of welding machines . . . . . . . . . . . . . . . . . . . . 6 4 Description of test conditions and analyses . . . . . . . . . . . . . . . . . . . . . 7 5 V series IGBTs on a 4 kW welder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5.1 Overview of thermal and electrical measurements . . . . . . . . . . . . . . . . . . 9 6 HB series IGBTs on a 6 kW welder . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6.1 Overview of thermal and electrical measurements . . . . . . . . . . . . . . . . . 13 7 Electrical analysis and waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 8 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 9 Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Appendix A Topology equations and device selection. . . . . . . . . . . . . . . . . . . . 20 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 |
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