Microchip Technology MCP16301 Manual de usuario

MCP16301

300 mA D2PAK

Demo Board

User’s Guide

Information contained in this publication regarding device

applications and the like is provided only for your convenience

and may be superseded by updates. It is your responsibility to

ensure that your application meets with your specifications.

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ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial

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logo, MPLIB, MPLINK, mTouch, Omniscient Code

Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit,

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ISBN: 978-1-61341-179-7

Note the following details of the code protection feature on Microchip devices:

• Microchip products meet the specification contained in their particular Microchip Data Sheet.

• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the

intended manner and under normal conditions.

• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our

knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data

Sheets. Most likely, the person doing so is engaged in theft of intellectual property.

• Microchip is willing to work with the customer who is concerned about the integrity of their code.

• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not

mean that we are guaranteeing the product as “unbreakable.”

Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our

products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts

allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.

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and India. The Company’s quality system processes and procedures

are for its PIC®MCUs and dsPIC®DSCs, KEELOQ®code hopping

devices, Serial EEPROMs, microperipherals, nonvolatile memory and

analog products. In addition, Microchip’s quality system for the design

and manufacture of development systems is ISO 9001:2000 certified.

MCP16301 300 mA D2PAK

DEMO BOARD USER’S GUIDE

Table of Contents

Preface ...........................................................................................................................5

Introduction............................................................................................................ 5

Document Layout .................................................................................................. 5

Conventions Used in this Guide............................................................................ 6

Recommended Reading........................................................................................ 7

The Microchip Web Site ........................................................................................ 7

Customer Support.................................................................................................7

Document Revision History................................................................................... 7

Chapter 1. Product Overview

1.1 Introduction ..................................................................................................... 9

1.2 MCP16301 Short Overview ............................................................................9

1.3 What is the MCP16301 300 mA D2PAK Demo Board? ...............................10

1.4 What Does the MCP16301 300 mA D2PAK Demo Board Kit Contain? .......10

Chapter 2. Installation and Operation

2.1 Introduction ...................................................................................................11

2.2 Getting Started ............................................................................................. 12

Appendix A. Schematics and Layouts

A.1 Introduction ..................................................................................................13

A.2 Board – Schematic ....................................................................................... 14

A.3 Board – Top Silk and Pads ..........................................................................15

A.4 Board – Top Copper Layer ..........................................................................15

A.5 Board – Bottom Copper Layer .....................................................................16

Appendix B. Bill of Materials (BOM)

Worldwide Sales and Service ....................................................................................18

MCP16301 300 mA D2PAK Demo Board User’s Guide

MCP16301 300 mA D2PAK

DEMO BOARD USER’S GUIDE

Preface

INTRODUCTION

This chapter contains general information that will be useful to know before using the

MCP16301 300 mA D2PAK Demo Board. Items discussed in this chapter include:

• Document Layout

• Conventions Used in this Guide

• Recommended Reading

• The Microchip Web Site

• Customer Support

• Document Revision History

DOCUMENT LAYOUT

This document describes how to use the MCP16301 300 mA D2PAK Demo Board as

a development tool to emulate and debug firmware on a target board. The manual

layout is as follows:

•Chapter 1. “Product Overview” – Important information about the MCP16301

300 mA D2PAK Demo Board.

•Chapter 2. “Installation and Operation” – Includes instructions on how to get

started with MCP16301 300 mA D2PAK Demo Board and a description of the

user’s guide.

•Appendix A. “Schematics and Layouts” – Shows the schematic and layout

diagrams for the MCP16301 300 mA D2PAK Demo Board.

•Appendix B. “Bill of Materials (BOM)” – Lists the parts used to build the

MCP16301 300 mA D2PAK Demo Board.

NOTICE TO CUSTOMERS

All documentation becomes dated, and this manual is no exception. Microchip tools and

documentation are constantly evolving to meet customer needs, so some actual dialogs

and/or tool descriptions may differ from those in this document. Please refer to our web site

(www.microchip.com) to obtain the latest documentation available.

Documents are identified with a “DS” number. This number is located on the bottom of each

page, in front of the page number. The numbering convention for the DS number is

“DSXXXXXA”, where “XXXXX” is the document number and “A” is the revision level of the

document.

For the most up-to-date information on development tools, see the MPLAB®IDE on-line help.

Select the Help menu, and then Topics to open a list of available on-line help files.

MCP16301 300 mA D2PAK Demo Board User’s Guide

CONVENTIONS USED IN THIS GUIDE

This manual uses the following documentation conventions:

DOCUMENTATION CONVENTIONS

Description Represents Examples

Arial font:

Italic characters Referenced books MPLAB®IDE User’s Guide

Emphasized text ...is the only compiler...

Initial caps A window the Output window

A dialog the Settings dialog

A menu selection select Enable Programmer

Quotes A field name in a window or

dialog “Save project before build”

Underlined, italic text with

right angle bracket A menu path File>Save

Bold characters A dialog button Click OK

A tab Click the Power tab

N‘Rnnnn A number in verilog format,

where N isthe total number of

digits, R is the radix and n is a

digit.

4‘b0010, 2‘hF1

Text in angle brackets < > A key on the keyboard Press <Enter>, <F1>

Courier New font:

Plain Courier New Sample source code #define START

Filenames autoexec.bat

File paths c:\mcc18\h

Keywords _asm, _endasm, static

Command-line options -Opa+, -Opa-

Bit values 0, 1

Constants 0xFF, ‘A’

Italic Courier New A variable argument file.o, where file can be

any valid filename

Square brackets [ ] Optional arguments mcc18 [options] file

[options]

Curly brackets and pipe

character: { | } Choice of mutually exclusive

arguments; an OR selection errorlevel {0|1}

Ellipses... Replaces repeated text var_name [,

var_name...]

Represents code supplied by

user void main (void)

{ ...

}

Preface

RECOMMENDED READING

This user's guide describes how to use the MCP16301 300 mA D2PAK Demo Board.

Other useful documents are listed below. The following Microchip documents are avail-

able and recommended as supplemental reference resources.

• MCP16301 Data Sheet – “High Voltage Input Integrated Switch Step-Down

Regulator” (DS25004)

•AN1385 Application Note – “Dynamic Analysis of the MCP16301 Switch-

mode Power Converter Utilizing the MCP16301 Design Analyzer” (DS01385)

•MCP16301 User’s Guide – “MCP16301 600 mA Demo Board User’s Guide”

(DS51978)

THE MICROCHIP WEB SITE

Microchip provides online support via our web site at www.microchip.com. This web

site is used as a means to make files and information easily available to customers.

Accessible by using your favorite Internet browser, the web site contains the following

information:

•Product Support – Data sheets and errata, application notes and sample

programs, design resources, user’s guides and hardware support documents,

latest software releases and archived software

•General Technical Support – Frequently Asked Questions (FAQs), technical

support requests, online discussion groups, Microchip consultant program

member listing

•Business of Microchip – Product selector and ordering guides, latest Microchip

press releases, listing of seminars and events, listings of Microchip sales offices,

distributors and factory representatives

CUSTOMER SUPPORT

Users of Microchip products can receive assistance through several channels:

• Distributor or Representative

• Local Sales Office

• Field Application Engineer (FAE)

• Technical Support

Customers should contact their distributor, representative or field application engineer

(FAE) for support. Local sales offices are also available to help customers. A listing of

sales offices and locations is included in the back of this document.

Technical support is available through the web site at:

http://www.microchip.com/support.

DOCUMENT REVISION HISTORY

Revision A (May 2011)

• Initial Release of this Document.

MCP16301 300 mA D2PAK Demo Board User’s Guide

NOTES:

MCP16301 300 mA D2PAK

DEMO BOARD USER’S GUIDE

Chapter 1. Product Overview

1.1 INTRODUCTION

This chapter provides an overview of the MCP16301 300 mA D2PAK Demo Board, and

covers the following topics:

• MCP16301 Short Overview

• What is the MCP16301 300 mA D2PAK Demo Board?

• What Does the MCP16301 300 mA D2PAK Demo Board Kit Contain?

1.2 MCP16301 SHORT OVERVIEW

The MCP16301 device is a highly integrated, high-efficiency, fixed frequency,

step-down DC-DC converter in a popular 6-pin SOT-23 package, that operates from

input voltage sources up to 30V. The integrated features include a high-side switch,

fixed frequency peak current mode control, internal compensation, peak current limit

and overtemperature protection. Minimal external components are needed to develop

a high-efficiency power supply, operating from a high-voltage input.

High-converter efficiency is achieved by integrating the current limited, low resistance,

high-speed N-Channel MOSFET and associated drive circuitry. High-switching

frequency minimizes the size of the external filtering components, resulting in a small

solution size.

The MCP16301 300 mA D2PAK Demo Board can supply 300 mA of continuous cur-

rent, while regulating the output voltage from 2.0V to 15V. An integrated, high-perfor-

mance peak current mode architecture keeps the output voltage tightly regulated, even

during input voltage steps and output current transient conditions that are common in

power systems. For this evaluation board, the external components are sized such that

they can fit into a smaller space than a D2PAK linear regulator. The external compo-

nents, namely the Schottky diode and the inductor, limit the maximum output current

for this application to less than 300 mA.

FIGURE 1-1: 300 mA Typical, MCP16301 Step-Down Application.

VIN

GND

VIN

4.0V to 26V

VOUT

3.3V @ 150 mA

COUT

22 µF

CIN

2.2 µF

15 µH

BOOST

31.2 KΩ

10 KΩ

1N4448

30V

Schottky

Diode

CBOOST

100 nF

MCP16301 300 mA D2PAK Demo Board User’s Guide

1.3 WHAT IS THE MCP16301 300 MA D2PAK DEMO BOARD?

The MCP16301 300 mA D2PAK Demo Board is designed to operate from a 4V to 26V

input and regulate the output to 3.3V while delivering 300 mA of load current. Test

points for input power and load are provided to demonstrate the capability of the demo

board over the entire range. The board was designed using small surface mount

components, to show the small board area necessary for a high-input voltage, 300 mA

design, that fits into less board area than the popular D2PAK, commonly used for linear

regulators.

1.4 WHAT DOES THE MCP16301 300 MA D2PAK DEMO BOARD KIT CONTAIN?

The MCP16301 300 mA D2PAK Demo Board kit includes:

• MCP16301 300 mA D2PAK Demo Board (102-00360)

• Important Information Sheet.

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