Datasheet

Buck/Boost Converter PICtail™ Plus Daughter Board User’s Guide

FIGURE 2-6: FEEDBACK JUMPERS

2.4.2.1 HARDWARE

The following hardware changes are required in the Daughter Board to enable control

of the Buck 1 and Boost stage:

• Jumper J12 and J13: Open

• Jumper J14 and J15: Short with jumper header (close)

2.4.2.2 SOFTWARE

The following additional changes in software are required to enable control of the Buck

1 and Boost stage:

• Boost Current feedback through analog input channel (AN2)

• Boost Voltage feedback through analog input channel (AN3)

• Boost PWM output (PWM3H)

• PWM2 output pin must be controlled by I/O port and driven low

J12

J13

J14

J15

Note: The software file Buck1 Voltage Mode with 28P Starter Board

on the Buck/Boost Converter PICtail Plus Daughter Board CD only provides

control for the Buck 1 stage.