Using the UCC28740EVM-525 10 W Constant-Voltage, Constant-Current Charger Adapter Module
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Introduction ..................................................................................................................................... 4
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Description ...................................................................................................................................... 4
2.1 Typical Applications .................................................................................................................. 4
2.2 Features .................................................................................................................................... 5
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Schematic ........................................................................................................................................ 7
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Test Setup ....................................................................................................................................... 8
5.1 Test Equipment ......................................................................................................................... 8
5.2 Recommended Test Setup ....................................................................................................... 9
5.3 List of Test Points ................................................................................................................... 10
5.7 Output Voltage Ripple ............................................................................................................. 12
5.8 Equipment Shutdown .............................................................................................................. 12
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6.1 Efficiency ................................................................................................................................. 13
6.2 Load Regulation ...................................................................................................................... 14
6.3 Line Regulation ....................................................................................................................... 15
6.6 Control Law ............................................................................................................................. 17
6.7 Bode Plot ................................................................................................................................ 18
6.8 Transient Response ................................................................................................................ 19
6.9 Output Ripple .......................................................................................................................... 20
6.10 Turn On Waveform ................................................................................................................. 21
6.11 Switching Waveform ............................................................................................................... 22
6.12 EMI Dithering Waveform ......................................................................................................... 23
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Bill of Materials ............................................................................................................................. 28
Load Current .................................................................................................................... 17
Contents
Figures
SLUUAL8
PSS- High Performance Isolated