Getting Started

 2015 Microchip Technology Inc.

DS50002399A-page 13

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

3.0 A Charging Operation

The EVB-UTC2000-DFP is designed to plug in and operate from any legacy USB

Type-A port. In order to protect your computer from possible overcurrent issues, 1.5A

and 3.0A modes have been disabled by default.

In order to test 1.5A charging mode, please perform the following steps:

1. Remove R15 and R17 56k Rp pull-up resistors

2. Populate R18 and R23 with 22k, 0402 footprint resistors

3. Set SW1 to the "1.5A" 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

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.