Rev 21 Jan 2014 15:09 | Page 9

When the USB dongle is connected to a PC port different from the one used to install the driver, the

PC device driver may ask you to install the driver again for that specific port. If this happens, repeat

the first four steps listed in this section.

USING THE EVALUATION BOARD

POWERING UP THE EVALUATION BOARD

The ADP5051/ADP5053 evaluation board is supplied fully assembled and tested. Before applying

power to the evaluation board, follow the procedures in this section.

Enable Jumpers

Each channel has its own enable pin, which must be pulled high to enable that channel (see Table 1).

To disable the channel, pull the enable pin low or leave it floating.

The enable control for each regulator has a 0.8 V precision enable threshold, which allows the

ADP5051/ADP5053 to be easily sequenced between channels or other input/output supplies. It can

also be used as a programmable UVLO input by the resistor divider.

When the external hardware enable pin is high, the CHx_ON enable register setting in the ADP5051

GUI software can be used to power down each channel operation.

Table 1. Channels of the Enable Pins

Channel Pin Enable Jumpers

Description

CH1: Buck EN1 J-EN1

0.8 V precision enable

CH2: Buck EN2 J-EN2

0.8 V precision enable

CH3: Buck EN3 J-EN3

0.8 V precision enable

CH4: Buck EN4 J-EN4

0.8 V precision enable

Power Input Jumpers

Each channel has its own power input jumper, which enables support for either a separate input

voltage or cascaded options for all channels.