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AN3093 Datasheet(PDF) 2 Page - STMicroelectronics |
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AN3093 Datasheet(HTML) 2 Page - STMicroelectronics |
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2 / 29 page ![]() Contents AN3093 2/29 Doc ID16539 Rev 1 Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 Test board: design and evaluation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 Efficiency and no-load measurements . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.1 Standby optimization: tips for reducing standby consumption . . . . . . . . . 12 Design optimization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.2 Five star charger energy rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4 Typical board waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 5 V-I output characteristics and cable drop compensation . . . . . . . . . . 19 6 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Appendix A Modes of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 A.1 Constant voltage operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 A.2 Constant current operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 A.3 Current comparator speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 A.4 Cable drop compensation block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 |
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