AC164133

AC164133 Datasheet

Part	Datasheet
AC164133	AC164133 (pdf)

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Buck/Boost Converter PICtail Plus Daughter Board User’s Guide 2008 Microchip Technology Inc. DS70336A 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. 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in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates.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. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART, rfPIC and SmartShunt are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. FilterLab, Linear Active Thermistor, MXDEV, MXLAB, SEEVAL, SmartSensor and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, Application Maestro, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, In-Circuit Serial Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB, MPLINK, mTouch, PICkit, PICDEM, PICDEM.net, PICtail, PIC32 logo, PowerCal, PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total Endurance, UNI/O, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. 2008, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received ISO/TS-16949:2002 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona Gresham, Oregon and design centers in California and India. The Company’s quality system processes and procedures are for its MCUs and DSCs, 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. DS70336A-page ii 2008 Microchip Technology Inc. BUCK/BOOST CONVERTER PICtail PLUS DAUGHTER BOARD USER’S GUIDE Table of Contents Preface 1 Chapter Introduction Overview 7 Features 11 Product Package 11 Chapter Hardware Overview Daughter Board Connectors 13 Daughter Board User Hardware Interface 15 Using the Daughter Board with the Explorer 16 Development Board 20 Using the Daughter Board with the 16-bit 28-pin Starter Development Board 21 Power Rating of Converter Stage 24 Chapter Getting Started Overview 25 Creating the Project 26 Building the Code 34 Programming the Device 38 Debugging the Code 44 Chapter Demonstration Program Operation Program Demonstration 49 Code Demonstration 51 Other Code Examples 51 Index 59 Worldwide Sales and Service 60 2008 Microchip Technology Inc. DS70336A-page iii Buck/Boost Converter PICtail Plus Daughter Board User’s Guide DS70336A-page iv 2008 Microchip Technology Inc. BUCK/BOOST CONVERTER PICtail PLUS DAUGHTER • 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 DEVELOPMENT SYSTEMS CUSTOMER CHANGE NOTIFICATION SERVICE To register, access the Microchip web site at click on Customer Change Notification and follow the registration instructions. The Development Systems product group categories are: • Compilers The latest information on Microchip C compilers and other language tools. These include the MPLAB C18 and MPLAB C30 C compilers MPASM and MPLAB ASM30 assemblers MPLINK and MPLAB LINK30 object linkers and MPLIB and MPLAB LIB30 object librarians. • Emulators The latest information on Microchip in-circuit emulators.This includes the MPLAB ICE 2000, MPLAB ICE 4000, and MPLAB REAL ICE in-circuit emulator. • In-Circuit Debuggers The latest information on the Microchip in-circuit debugger, MPLAB ICD • MPLAB IDE The latest information on Microchip MPLAB IDE, the Integrated Development Environment for development systems tools. This list is focused on the MPLAB IDE, MPLAB SIM simulator, MPLAB IDE Project Manager and general editing and debugging features. • Programmers The latest information on Microchip programmers. These include the MPLAB PM3 and PRO MATE II device programmers and the Plus and PICkit 1 development programmers. DS70336A-page 4 2008 Microchip Technology Inc. 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: 2008 Microchip Technology Inc. DS70336A-page 5 Buck/Boost Converter PICtail Plus Daughter Board User’s Guide DS70336A-page 6 2008 Microchip Technology Inc. BUCK/BOOST CONVERTER PICtail PLUS DAUGHTER BOARD USER’S GUIDE Chapter Introduction Modern power supplies are becoming smaller, more efficient, more flexible and less expensive. These desirable enhancements have come about as digital signal controllers are incorporated into Switch Mode Power Supply SMPS designs. Buck converters are used when the desired output voltage is smaller than the input voltage. Boost converters are used when the desired output voltage is higher than the input voltage. This chapter introduces and provides an overview of the Buck/Boost Converter PICtail Plus Daughter Board. The following topics are included in this chapter: • Overview • Features • Product Package OVERVIEW The Buck/Boost Converter PICtail Plus Daughter Board also referred to as Daughter Board is a power supply board. It consists of two independent DC/DC synchronous buck converters and one independent DC/DC boost converter. Figure 1-1 illustrates a block diagram of the Daughter Board. All of the necessary power, drive and control signals are available in the J1 and J2 connectors. The 16-bit 28-pin Starter Development Board can be used to control one independent DC/DC synchronous buck converters. This board can also control two buck stages, or one buck and one boost stage with hardware modification on the 16-bit 28-pin Starter Development Board. Refer to Section “16-bit 28-pin Starter Development Board Controls Buck 1 and Boost Stages” for more details. The block diagram of the Daughter Board using the 16-bit 28-pin Starter Development Board is shown in Figure All three stages of the Buck/Boost Converter PICtail Plus Daughter Board are controlled by the Explorer 16 Development Board. Figure 1-3 shows a block diagram of the Daughter Board using the Explorer 16 Development Board. The control boards provide closed-loop Proportional-Integral-Derivative PID control in the software to maintain the desired output voltage level. The DSC device provides the necessary memory and peripherals for A/D conversion, PWM generation, analog comparison and general purpose I/O, excluding the need to perform these functions in external circuitry. SMPS DSC devices are specifically designed to provide low-cost and efficient control for a wide range of power supply topologies. The specialized peripherals facilitate closed-loop feedback control of switch mode power supplies, providing communication for remote monitoring and supervisory control. The Daughter Board enables the end user to easily transition from analog-to-digital implementation of the power application. The Daughter Board also aids in rapid development of buck converter, boost converter, multi-phase buck converter and two parallel buck converters. 2008 Microchip Technology Inc. DS70336A-page 7 Buck/Boost Converter PICtail Plus Daughter Board User’s Guide The dsPIC33F SMPS family of devices provides the following features: • Integrated program and data memory on a single chip • Ultra-fast interrupt response time and hardware interrupt priority logic • Up to 4 Msps, on-chip ADC with two SARs, and up to four dedicated and two shared sample/hold circuits for multiple loop control • Four independent, high-resolution PWM generators specially designed to support different power topologies • Four analog comparators for control loop implementation and system protection • On-chip system communications I2C /SPI/UART • On-chip Fast RC oscillator for lower system cost • High-current sink/source for PWM pins 16 mA/16 mA • CPU performance 40 MIPS • Extensive power saving • CodeGuard Security enabled FIGURE 1-1: DAUGHTER BOARD BLOCK DIAGRAM VINSENSE PWM1H

PDF Datasheet Preview

Buck/Boost Converter PICtail Plus Daughter Board

User’s Guide
2008 Microchip Technology Inc.

DS70336A

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.

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. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.

Trademarks

The Microchip name and logo, the Microchip logo, Accuron, dsPIC, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART, rfPIC and SmartShunt are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.

FilterLab, Linear Active Thermistor, MXDEV, MXLAB, SEEVAL, SmartSensor and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A.

Analog-for-the-Digital Age, Application Maestro, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, In-Circuit Serial Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB, MPLINK, mTouch, PICkit, PICDEM, PICDEM.net, PICtail, PIC32 logo, PowerCal, PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total Endurance, UNI/O, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.

SQTP is a service mark of Microchip Technology Incorporated in the U.S.A.

All other trademarks mentioned herein are property of their respective companies.
2008, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved.

Printed on recycled paper.

Microchip received ISO/TS-16949:2002 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona Gresham, Oregon and design centers in California and India. The Company’s quality system processes and procedures are for its MCUs and DSCs, 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.

DS70336A-page ii
2008 Microchip Technology Inc.

BUCK/BOOST CONVERTER PICtail PLUS DAUGHTER

BOARD USER’S GUIDE

Table of Contents

Preface 1 Chapter Introduction

Overview 7 Features 11 Product Package 11

Chapter Hardware Overview

Daughter Board Connectors 13 Daughter Board User Hardware Interface 15 Using the Daughter Board with the Explorer 16 Development Board 20 Using the Daughter Board with the 16-bit 28-pin Starter

Development Board 21 Power Rating of Converter Stage 24

Chapter Getting Started

Overview 25 Creating the Project 26 Building the Code 34 Programming the Device 38 Debugging the Code 44

Chapter Demonstration Program Operation

Program Demonstration 49 Code Demonstration 51 Other Code Examples 51

Index 59 Worldwide Sales and Service 60
2008 Microchip Technology Inc.

DS70336A-page iii

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

DS70336A-page iv
2008 Microchip Technology Inc.

BUCK/BOOST CONVERTER PICtail PLUS DAUGHTER
• 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

DEVELOPMENT SYSTEMS CUSTOMER CHANGE NOTIFICATION SERVICE

To register, access the Microchip web site at click on Customer Change Notification and follow the registration instructions.

The Development Systems product group categories are:
• Compilers The latest information on Microchip C compilers and other language tools. These include the MPLAB C18 and MPLAB C30 C compilers MPASM and MPLAB ASM30 assemblers MPLINK and MPLAB LINK30 object linkers and MPLIB and MPLAB LIB30 object librarians.
• Emulators The latest information on Microchip in-circuit emulators.This includes the MPLAB ICE 2000, MPLAB ICE 4000, and MPLAB REAL ICE in-circuit emulator.
• In-Circuit Debuggers The latest information on the Microchip in-circuit debugger, MPLAB ICD
• MPLAB IDE The latest information on Microchip MPLAB IDE, the Integrated Development Environment for development systems tools. This list is focused on the MPLAB IDE, MPLAB SIM simulator, MPLAB IDE Project Manager and general editing and debugging features.
• Programmers The latest information on Microchip programmers. These include the MPLAB PM3 and PRO MATE II device programmers and the Plus and PICkit 1 development programmers.

DS70336A-page 4
2008 Microchip Technology Inc.

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:
2008 Microchip Technology Inc.

DS70336A-page 5

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

DS70336A-page 6
2008 Microchip Technology Inc.

BUCK/BOOST CONVERTER PICtail PLUS DAUGHTER

BOARD USER’S GUIDE

Chapter Introduction

Modern power supplies are becoming smaller, more efficient, more flexible and less expensive. These desirable enhancements have come about as digital signal controllers are incorporated into Switch Mode Power Supply SMPS designs. Buck converters are used when the desired output voltage is smaller than the input voltage. Boost converters are used when the desired output voltage is higher than the input voltage.

This chapter introduces and provides an overview of the Buck/Boost Converter PICtail Plus Daughter Board. The following topics are included in this chapter:
• Overview
• Features
• Product Package

OVERVIEW

The Buck/Boost Converter PICtail Plus Daughter Board also referred to as Daughter Board is a power supply board. It consists of two independent DC/DC synchronous buck converters and one independent DC/DC boost converter. Figure 1-1 illustrates a block diagram of the Daughter Board.

All of the necessary power, drive and control signals are available in the J1 and J2 connectors. The 16-bit 28-pin Starter Development Board can be used to control one independent DC/DC synchronous buck converters. This board can also control two buck stages, or one buck and one boost stage with hardware modification on the 16-bit 28-pin Starter Development Board. Refer to Section “16-bit 28-pin Starter Development Board Controls Buck 1 and Boost Stages” for more details.

The block diagram of the Daughter Board using the 16-bit 28-pin Starter Development Board is shown in Figure All three stages of the Buck/Boost Converter PICtail Plus Daughter Board are controlled by the Explorer 16 Development Board. Figure 1-3 shows a block diagram of the Daughter Board using the Explorer 16 Development Board.

The control boards provide closed-loop Proportional-Integral-Derivative PID control in the software to maintain the desired output voltage level. The DSC device provides the necessary memory and peripherals for A/D conversion, PWM generation, analog comparison and general purpose I/O, excluding the need to perform these functions in external circuitry. SMPS DSC devices are specifically designed to provide low-cost and efficient control for a wide range of power supply topologies. The specialized peripherals facilitate closed-loop feedback control of switch mode power supplies, providing communication for remote monitoring and supervisory control.

The Daughter Board enables the end user to easily transition from analog-to-digital implementation of the power application. The Daughter Board also aids in rapid development of buck converter, boost converter, multi-phase buck converter and two parallel buck converters.
2008 Microchip Technology Inc.

DS70336A-page 7

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

The dsPIC33F SMPS family of devices provides the following features:
• Integrated program and data memory on a single chip
• Ultra-fast interrupt response time and hardware interrupt priority logic
• Up to 4 Msps, on-chip ADC with two SARs, and up to four dedicated and two
shared sample/hold circuits for multiple loop control
• Four independent, high-resolution PWM generators specially designed to support
different power topologies
• Four analog comparators for control loop implementation and system protection
• On-chip system communications I2C /SPI/UART
• On-chip Fast RC oscillator for lower system cost
• High-current sink/source for PWM pins 16 mA/16 mA
• CPU performance 40 MIPS
• Extensive power saving
• CodeGuard Security enabled

FIGURE 1-1:

DAUGHTER BOARD BLOCK DIAGRAM

VINSENSE

PWM1H

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived AC164133 Datasheet file may be downloaded here without warranties.

Datasheet ID: AC164133 648082