UG:301

vicorpower.com

Applications Engineering: 800 927.9474

Page 1

DC-DC Converter Evaluation Board

Chris Swartz

Principal Applications Engineer

May 2013

Introduction

The PI31xx-xx-EVAL1 evaluation board allows the user to test the basic operating

principles of the PI31xx series of high density DC-DC power converters and experience

the performance and value of this solution compared to alternate conventional

solutions. Each evaluation board is populated with the components that could be used

in a final design. It is not designed or intended to be used in end product applications.

Please read this document prior to the connection of test equipment and refer to the

product datasheet for device specifications, descriptions and characteristics. Remember

to follow good lab safety practices and use safety glasses at all times.

The PI31xx-xx-EVAL1 is configured to support one single input and one single output.

Each board offers pin strap options for trimming the output voltage up and down,

turning the converter on and off and adding EMI system “Y” capacitors. Additional

parts are included to compensate for line impedance associated with long leads from

the bench power supply to the converter. Additional component footprints are made

available to allow the user to test different design configurations that may be required

to meet their end needs. Kelvin type test points are included to allow for easy and

convenient connections of testing instruments for evaluation of efficiency, line/load

regulation and transient response. A low impedance oscilloscope connection using a

Johnson jack is included for ripple measurement and evaluation of the output voltage

during transient events. Each demo board is equipped with a heatsink to allow high

power operation with a small amount of air flow and to allow operation of the board

over various temperature extremes.

Contents

Page

Introduction

1

Product Description

2

Board Connections

2

Thermal Considerations

3

Max I/O Ratings

5

Schematic

BOMs

6

Test Setup

11

PCB Artwork

12

Mechanical Outline

14

Ordering Information

14

USER GUIDE | UG:301

Figure 1.

PI31xx-xx-EVAL1

Evaluation Board