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Contents
Revision history. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Minimum requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Kit content. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Hardware description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.1 Hardware figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.3 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.4 LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.5 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.5.1 Charge voltage termination . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.5.2 Charge current limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.5.3 Output voltage configuration . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.5.4 Buck regulator mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.5.5 VBUS current limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.6 Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.6.1 Ship mode activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.6.2 Ship mode disabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.7 Solder bridge configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.8 NTC configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5 Measuring current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.1 Preparing the nPM1100 EK . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.1.1 Preparing for VBUS current measurements . . . . . . . . . . . . . . . . . . . . 14
5.1.2 Preparing for VBAT current measurements . . . . . . . . . . . . . . . . . . . . 14
5.1.3 Preparing for VOUTB current measurements . . . . . . . . . . . . . . . . . . . 14
5.2 Using an oscilloscope for current profile measurement . . . . . . . . . . . . . . . . 15
5.3 Using an ampere meter for current measurements . . . . . . . . . . . . . . . . . . 16
5.4 Using the Power Profiler Kit II for current measurements . . . . . . . . . . . . . . . . 16
5.4.1 Measuring VBUS current . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.4.2 Measuring VBAT current . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.4.3 Measuring VOUTB current . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Acronyms and abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Recommended reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Legal notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
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