Microchip Technology EVB-UTC2000-UFP, Руководство пользователя

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UTC2000 Evaluation Kit User’s Guide
DS50002399B-page 16
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2015 Microchip Technology Inc.
When connecting the EVB-UTC2000-DFP board to the EVB-UTC2000-UFP while in
1.5A charging mode, the “1.5A” charging capability LED (D3) indicator on the
EVB-UTC2000-UFP will be illuminated.
2.2.4 3.0A Charging Operation
The EVB-UTC2000-DFP is designed to plug in and operate from any legacy USB
Type-A port. To protect your computer from possible overcurrent issues, 1.5A and 3.0A
modes have been disabled by default.
To test 3.0A charging mode, perform the following steps:
1. Remove R15 and R17 56k Rp pull-up resistors.
2. Populate R24 and R27 with 10k, 0402 footprint resistors.
3. Set SW1 to the “3.0A” position.
4. Remove R3 to isolate the 5V domain on the EVB-UTC200-DFP from the 5V
domain on your host PC.
5. Connect an external power supply as shown in Section 3.1.1 “Power Source” .
When connecting the EVB-UTC2000-DFP board to the EVB-UTC2000-UFP while in
3.0A charging mode, the “3.0A” charging capability LED indicator (D2) on the
EVB-UTC2000-UFP will be illuminated.