Microchip Technology AC164133 Data Sheet

DS70336A-page 20

© 2008 Microchip Technology Inc.

This section describes the use of a 16-bit 28-pin Starter Development Board with the 
Buck/Boost Converter PICtail Plus Daughter Board.

Figure 2-4 shows the 16-bit 28-pin Starter Development Board and its hardware 
elements. For more details, refer to the “16-Bit 28-Pin Starter Development Board 
User's Guide” (DS51656), which is available from the Microchip website 
(http://www.microchip.com).

The potentiometer, RP1 (10 k

Ω), with the J5 jumper on the 16-bit 28-pin Starter 

Development Board, is connected to the analog input channel (AN5) of the SMPS 
dsPIC DSC device. Figure 2-5 shows the connection of a 16-bit 28-pin Starter 
Development Board to a Daughter Board with ICD 2 and a 9V power supply. 

Ensure that the following changes are made to the 16-bit 28-pin Starter Development 
Board prior to connecting the 16-bit 28-pin Starter Development Board to the Daughter 
Board:

• Remove resistors R14 and R15 (to control Buck 2 or Boost converter)

• JP1 in pin 1-2 position (supply)

• JP2 in pin 2-3 position (+3.3V)

• JP3 in 1-2 position (dsPIC33F/PIC24)

• JP4 open

• SW2 in USB/DEBUG mode

JP1

JP2

JP3

JP4

R14

R15

R17

R16

SW2