Digital Power Starter Kit User’s Guideww1.microchip.com/downloads/en/DeviceDoc/50002330b.pdf · DIGITAL POWER STARTER KIT USER’S GUIDE 2015 Microchip Technology Inc. DS50002330B-page

2015 Microchip Technology Inc. DS50002330B

Digital Power Starter KitUser’s Guide

DS50002330B-page 2 2015 Microchip Technology Inc.

Information contained in this publication regarding deviceapplications and the like is provided only for your convenienceand may be superseded by updates. It is your responsibility toensure that your application meets with your specifications.MICROCHIP MAKES NO REPRESENTATIONS ORWARRANTIES OF ANY KIND WHETHER EXPRESS ORIMPLIED, WRITTEN OR ORAL, STATUTORY OROTHERWISE, RELATED TO THE INFORMATION,INCLUDING BUT NOT LIMITED TO ITS CONDITION,QUALITY, PERFORMANCE, MERCHANTABILITY ORFITNESS FOR PURPOSE. Microchip disclaims all liabilityarising from this information and its use. Use of Microchipdevices in life support and/or safety applications is entirely atthe buyer’s risk, and the buyer agrees to defend, indemnify andhold harmless Microchip from any and all damages, claims,suits, or expenses resulting from such use. No licenses areconveyed, implicitly or otherwise, under any Microchipintellectual property rights.

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 ourproducts. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such actsallow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.

Microchip received ISO/TS-16949:2009 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 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.

QUALITY MANAGEMENT SYSTEM CERTIFIED BY DNV

== ISO/TS 16949 ==

Trademarks

The Microchip name and logo, the Microchip logo, dsPIC, FlashFlex, flexPWR, JukeBlox, KEELOQ, KEELOQ logo, Kleer, LANCheck, MediaLB, MOST, MOST logo, MPLAB, OptoLyzer, PIC, PICSTART, PIC32 logo, RightTouch, SpyNIC, SST, SST Logo, SuperFlash and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.

The Embedded Control Solutions Company and mTouch are registered trademarks of Microchip Technology Incorporated in the U.S.A.

Analog-for-the-Digital Age, BodyCom, chipKIT, chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net, ECAN, In-Circuit Serial Programming, ICSP, Inter-Chip Connectivity, KleerNet, KleerNet logo, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach, Omniscient Code Generation, PICDEM, PICDEM.net, PICkit, PICtail, RightTouch logo, REAL ICE, SQI, Serial Quad I/O, Total Endurance, TSHARC, USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, 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.

Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries.

GestIC is a registered trademarks of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries.

All other trademarks mentioned herein are property of their respective companies.

© 2015, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved.

ISBN: 978-1-63277-380-7

Object of Declaration: Digital Power Starter Kit

2015 Microchip Technology Inc. DS50002330B-page 3

Digital Power Starter Kit User’s Guide

NOTES:


DIGITAL POWER STARTER KIT
USER’S GUIDE
Safety Notice

The following safety notices and operating instructions should be adhered to in order to avoid a safety hazard. If in any doubt, consult your supplier.

DANGER – The Digital Power Starter Kit contains two resistive loads that are intended to dissipate power in the form of heat. Depending on the output power level, it is pos-sible for the resistive load to become hot to the touch or to any surface in direct contact with the board.

WARNING – The Digital Power Starter Kit should only be installed, operated, serviced or modified by qualified personnel. Any service or modification performed by the user is done at the user’s own risk and voids all warranties.

CAUTION – Particular care should be taken during code development as unexpected voltage regulation behavior is possible. Ensure that the power supply connected to the Digital Power Starter Kit is properly protected against overcurrent event caused by code development.

General Notices:• The Digital Power Starter Kit is intended for evaluation and development purposes, and should only be

operated in a normal laboratory environment as defined by IEC 61010-1:2001.• Clean with a dry cloth only.• Operate flat on a bench away from any surface items that might come in contact with the board. Do not

move during operation and avoid direct contact with the bottom layer of the board.• The Digital Power Starter Kit should not be connected or operated if there is any apparent damage to

the unit.



NOTES:


USER’S GUIDE
Table of Contents

Safety Notice ................................................................................................................. 5Preface ........................................................................................................................... 9Chapter 1. Introduction

1.1 Overview ...................................................................................................... 151.2 Kit Contents .................................................................................................. 151.3 Starter Kit Functionality and Features .......................................................... 161.4 Electrical Specifications ................................................................................ 19

Chapter 2. Hardware2.1 Top Assembly ............................................................................................... 212.2 Signal Configuration ..................................................................................... 232.3 Application Components .............................................................................. 242.4 Board Connectors ........................................................................................ 252.5 Indicators and Human Interfaces ................................................................. 252.6 Test Points ................................................................................................... 262.7 Power Rating of Converter Stages ............................................................... 282.8 Programmer/Debugger ................................................................................. 29

Chapter 3. Demonstration Program Operation3.1 Program Demonstration ............................................................................... 313.2 Code Demonstration .................................................................................... 333.3 Other Code Examples .................................................................................. 34

Appendix A. Board Layout and Schematics.............................................................. 35Worldwide Sales and Service .................................................................................... 40


NOTES:

USER’S GUIDE
Preface

INTRODUCTIONThis preface contains general information that will be useful to know before using the Digital Power Starter Kit. Topics discussed in this preface include:• Document Layout• Conventions Used in this Guide• Warranty Registration• Recommended Reading• The Microchip Web Site• Development Systems Customer Change Notification Service• Customer Support• Document Revision History

DOCUMENT LAYOUTThis user’s guide provides an overview of the Digital Power Starter Kit. The document is organized as follows:• Chapter 1. “Introduction” – This chapter introduces the Digital Power Starter Kit

and provides a brief overview of its features.• Chapter 2. “Hardware” – This chapter describes the board layout and the main

components of the Digital Power Starter Kit.• Chapter 3. “Demonstration Program Operation” – This chapter describes the

demonstration software that is preloaded on the device that accompanies the Digital Power Starter Kit.

• Appendix A. “Board Layout and Schematics” – This appendix provides diagrams of the hardware layout, as well as schematic diagrams for the Digital Power Starter Kit.

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 “DSXXXXXXXXA”, where “XXXXXXXX” 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.


http://www.microchip.com


CONVENTIONS USED IN THIS GUIDEThis manual uses the following documentation conventions:

WARRANTY REGISTRATIONPlease complete the enclosed Warranty Registration Card and mail it promptly. Sending in the Warranty Registration Card entitles users to receive new product updates. Interim software releases are available at the Microchip web site.

DOCUMENTATION CONVENTIONSDescription 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 dialogA 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 OKA tab Click the Power tab

N‘Rnnnn A number in verilog format, where N is the 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 braces 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 READINGThis user’s guide describes how to use the Digital Power Starter Kit. The device-specific data sheets contain current information on programming the specific microcontroller or digital signal controller devices. The following Microchip documents are available and recommended as supplemental reference resources:

MPLAB® C Compiler for PIC24 MCUs and dsPIC® DSCs User’s Guide (DS51284)This comprehensive guide describes the usage, operation and features of Microchip’s MPLAB C compiler (formerly MPLAB C30) for use with 16-bit devices.

MPLAB® X IDE User’s Guide (DS50002027)This document describes how to set up the MPLAB X IDE software and use it to create projects and program devices.

Readme FilesFor the latest information on using the Digital Power Starter Kit board, read the Readme.txt text file in the Readme subdirectory of the MPLAB X IDE installation direc-tory from the Digital Power Starter Kit code example. The Readme file contains updated information and known issues that may not be included in this user’s guide.

dsPIC33 ‘GS’ Data SheetRefer to these documents for detailed information on the dsPIC33 ‘GS’ SMPS Digital Signal Controllers (DSCs). Reference information found in these data sheets includes:• Device memory maps• Device pinout and packaging details• Device electrical specifications• List of peripherals included on the devices

dsPIC33/PIC24 Family Reference Manual SectionsFamily Reference Manual (FRM) sections are available, which explain the operation of the dsPIC® DSC and PIC® MCU family architecture and peripheral modules. The specifics of each device family are discussed in the individual family’s device data sheet.

Microchip SMPS Resources• AN1114 “Switch Mode Power Supply (SMPS) Topologies (Part I)” (DS01114)• AN1207 “Switch Mode Power Supply (SMPS) Topologies (Part II)” (DS01207)• TB062 “Frequently Asked Questions (FAQs) About dsPIC® DSC SMPS Devices”

(DS93062)To obtain any of these documents, visit the Microchip web site at www.microchip.com.




THE MICROCHIP WEB SITEMicrochip 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

DEVELOPMENT SYSTEMS CUSTOMER CHANGE NOTIFICATION SERVICEMicrochip’s customer notification service helps keep customers current on Microchip products. Subscribers will receive e-mail notification whenever there are changes, updates, revisions or errata related to a specified product family or development tool of interest.To register, access the Microchip web site at www.microchip.com, 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® XC compiler; MPASM™ and MPLAB 16-bit assemblers; MPLINK™ and MPLAB 16-bit object linkers; and MPLIB™ and MPLAB 16-bit object librarians.

• Emulators – The latest information on the Microchip MPLAB REAL ICE™ in-circuit emulator.

• In-Circuit Debuggers – The latest information on the Microchip in-circuit debugger, MPLAB ICD 3.

• MPLAB X IDE – The latest information on Microchip MPLAB X IDE, the Windows® Integrated Development Environment for development systems tools. This list is focused on the MPLAB X IDE, MPLAB SIM simulator, MPLAB X IDE project manager, and general editing and debugging features.

• Programmers – The latest information on Microchip programmers. These include the MPLAB PM3 device programmer and the PICkit™ 3 development programmer.


Preface

CUSTOMER SUPPORTUsers of Microchip products can receive assistance through several channels:• Distributor or Representative• Local Sales Office• Field Application Engineer (FAE)• Technical SupportCustomers 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://support.microchip.com.

DOCUMENT REVISION HISTORY

Revision A (January 2015)This is the initial released version of this document.

Revision B (May 2015)Updated schematic in Figure A-3 that resides in Appendix A. “Board Layout and Schematics”.



NOTES:


USER’S GUIDE
Chapter 1. Introduction

This chapter introduces the Digital Power Starter Kit and provides an overview of its features. The topics covered include:• Overview• Kit Contents• Starter Kit Functionality and Features• Electrical Specifications

1.1 OVERVIEWModern power supplies are becoming smaller, more efficient, more flexible and less expensive. These desirable enhancements have come about as Digital Signal Controllers (DSCs) are incorporated into Switch Mode Power Supply (SMPS) designs. The board provided in the kit is intended to introduce and demonstrate the capabilities and features of Microchip SMPS families of devices. The Digital Power Starter Kit features an on-board programmer/debugger, which eliminates the need for any additional programmer or hardware interface.The software for the demonstration application that is preprogrammed into the on-board dsPIC33 ‘GS’ Digital Signal Controller (DSC) is available for download from the Microchip web site at: http://www.microchip.com.

1.2 KIT CONTENTSThe Digital Power Starter Kit contains the following:• Digital Power Starter Kit Board• 9V Power Supply• USB Cable

Note: Refer to the Readme file provided with the Digital Power Starter Kit demon-stration software for instructions on how to run the demonstration application. Refer to the Information Sheet that is provided with the starter kit package for additional resources and instructions on how to use the starter kit for programming and debugging application software.

Note: If you are missing any part of the kit, contact a Microchip sales office for assistance. A list of worldwide Microchip offices for sales and service is provided at the end of this document.



1.3 STARTER KIT FUNCTIONALITY AND FEATURESThe Digital Power Starter Kit is a Switch Mode Power Supply (SMPS) board that consists of one independent DC/DC synchronous Buck converter and one independent DC/DC Boost converter. Figure 1-1 illustrates a high-level block diagram of the Digital Power Starter Kit.The Digital Power Starter Kit provides closed-loop Peak Current Mode control using a 2-Pole, 2-Zero (2P2Z) compensator implemented in software to maintain the desired output voltage level of Peak Current Mode (PkCM) control. The dsPIC® DSC device provides the necessary memory and peripherals for ADC conversion, PWM genera-tion, analog comparison and general purpose I/O, preventing the need to perform these functions in external circuitry.SMPS dsPIC 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 dsPIC33 ‘GS’ family of devices provides the following features:• Integrated program and data memory on a single chip• Ultra-fast interrupt response time with interrupt priority logic• High-Speed ADC with multiple Sample-and-Hold (S&H) circuits.• High-resolution PWM generators, specially designed to support different power

topologies• High-speed 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


Introduction

FIGURE 1-1: DIGITAL POWER STARTER KIT SYSTEM DIAGRAM

FIGURE 1-2: BUCK/BOOST RESISTIVE INTERNAL LOAD CONFIGURATION OPTION

See Figure 1-2See Figure 1-2

VFB Boost

LCDVoltage/Current/

Temperature/Fault/Load

Current SenseBoost

GateDriver

VIN

15V

VFB Boost

VFB Buck

3.3V

VFB Buck

GateDrivers

Current SenseBuck

VINVIN

VIN_FB

SW1

MUXBUCKTEMP

SENSOR

BOOSTTEMP

SENSOR

USB On-BoardDebugger

AN4

RB6

AN7

RB13SDASCL

AN3

AN2

PWM2L

AN1

PWM1L

PWM1H

AN0

VDD

PC

Fuse

Note 1: R1 = 22Ω R2 = R3 = 8.7Ω

R4 = 450Ω R5 = R6 = 180Ω

2: When both converters are programmed to their nominal values of 3.3V and 15V, and all internal loads are enabled, each converter is loaded with 3W.

BuckResistiveLoads

3.3VBoostResistiveLoads

15V

R1 R2 R3 R4 R5 R6

SCL

SDA

I/OExpander

Gate Drivers

I2C™ Communicationwith dsPIC® DSC



1.3.1 Power Stages• One Boost converter power stage• One synchronous Buck converter power stage

1.3.2 Display• Voltage, current, temperature, internal load setting and converter status

(enabled/disabled)

1.3.3 Converter Loads• Buck 3W configurable resistive load• Boost 3W configurable resistive load

1.3.4 Additional Features• Two on-board temperature sensors, located near the resistive loads of each

converter; this enables the user to program a temperature protection limit• Input voltage sense, used to detect under/overvoltage conditions• Connector for PICkit™ 3 Programmer/Debugger (J3)• LED power-on indicator (D1)• Load indication LEDs• LCD used to display voltage, internal load, temperature and Fault conditions

1.3.5 Starter Kit Power• +9V power connector (J2) supplies power to the Digital Power Starter Kit• USB connection jack (J5) supplies power/connection to the on-board programmer/

debugger• Buck and Boost converters are both operated in Peak Current Mode (default), but

can also be reprogrammed to operate in Average Current or Voltage Current Control mode; this requires minor hardware changes to the current sense and slope compensation circuits

Note: Average Current mode control requires the following changes:

Buck Converter:R5 – DNPR14 – DNPC26 – 0 Ohm

Boost Converter:R7 – DNPR13 – DNPR62 – 0 OhmC20 – 0 Ohm


Introduction

1.4 ELECTRICAL SPECIFICATIONS

TABLE 1-1: DC INPUT RATING (J2)

TABLE 1-2: BUCK CONVERTER ELECTRICAL SPECIFICATIONS

TABLE 1-3: BOOST CONVERTER ELECTRICAL SPECIFICATIONS

Parameter Minimum Typical Maximum Unit

Voltage 7.0 9 11 VCurrent — 1.3 — A


Output Voltage (default programmed) — 3.3 — VOutput Voltage (programmable range)(1) 2.4 — 3.8 VOutput Voltage Ripple — 50 — mV (pk-pk)Output Current — — 2.5 ALoad Regulation: VOUT = 3.3V, IOUT = 0.02 – 1.51A, VIN = 9V

— 50 — mV/A

Switching Frequency — 350 — kHzOutput Power — 3(1) 5(2) WNote 1: Maximum power of resistive loads should not exceed 3W.

2: Ensure that 5W maximum is never exceeded, regardless of the output voltage and current.


Output Voltage (default programmed) — 15 — VOutput Voltage (programmable range)(1) 13.4 — 17.8 VOutput Voltage Ripple — 100 — mV (pk-pk)Output Current — — 0.37 ALoad Regulation: VOUT = 15V, IOUT = 0.02 – 0.33A, VIN = 9V

— 50 — mV/A

Switching Frequency — 350 — kHzOutput Power — 3(1) 5(2) WNote 1: Maximum power of resistive loads should not exceed 3W.

2: Ensure that 5W maximum is never exceeded, regardless of the output voltage and current.



NOTES:


USER’S GUIDE
Chapter 2. Hardware

This chapter describes the hardware components of the Digital Power Starter Kit.Topics covered include:• Top Assembly• Signal Configuration• Application Components• Board Connectors• Indicators and Human Interfaces• Test Points• Power Rating of Converter Stages• Programmer/Debugger

2.1 TOP ASSEMBLYThe top and bottom assembly of the board is shown in Figure 2-1 and Figure 2-2. Table 2-1 and Table 2-2 provide a description of the components.

FIGURE 2-1: DIGITAL POWER STARTER KIT (TOP VIEW)



TABLE 2-1: DIGITAL POWER STARTER KIT COMPONENTS (TOP VIEW)

FIGURE 2-2: DIGITAL POWER STARTER KIT (BOTTOM VIEW)

TABLE 2-2: DIGITAL POWER STARTER KIT COMPONENTS (BOTTOM VIEW)

Number Description

1 2x16 Character LCD2 Push Button (SW1)3 dsPIC33 ‘GS’ Digital Signal Controller (DSC) (U3)4 Voltage Regulator (3.3V)5 9V Power Connector (J2)6 Buck Converter Stage7 Boost Converter Stage8 Buck Temperature Sensor9 Boost Temperature Sensor

10 PICkit™ 3 Programmer/Debugger

Number Description

1 Buck Load2 Boost Load3 Buck PWM Drive Circuit4 Boost PWM Drive Circuit5 On-Board PKOB Programmer/Debugger Circuit6 Voltage Regulator (+5V)7 Programmer/Debugger USB Connector (J5)


Hardware

2.2 SIGNAL CONFIGURATIONTable 2-3 provides a full list of the dsPIC33 ‘GS’ DSC connections and a brief functional description of the pins used in the Digital Power Starter Kit.

TABLE 2-3: dsPIC33 ‘GS’ CONFIGURATION DETAILSDigital Power Starter Kit

Signal LabelPin # Device Pin Function Description/Function

ICSP_MCLR_VPP_Target 1 MCLR Master Clear (Reset) InputCS_BUCK 2 AN0 Analog – Buck Current SenseVFB_BUCK 3 AN1 Analog – Buck Voltage FeedbackCS_BOOST 4 AN2 Analog – Boost Current SenseVFB_BOOST 5 AN3 Analog – Boost Voltage FeedbackVIN_FB 6 AN4 Analog – Input Voltage FeedbackLCD_CLOCK 7 RB10 Clock to LCD Device

— 8 VSS GroundLCD_DATA 9 RB1 Data to LCD DeviceTEMP_SENSE 10 AN7 Analog – Temperature SensorPGD2 11 PGD2 Data I/O Pin for Programming/

Debugging Communication Channel 2PGC2 12 PGC2 Clock Input Pin for Programming/

Debugging Communication Channel 2— 13 VDD Positive Supply for Peripheral Logic and

I/O PinsSW 14 RB8 SW1 Push ButtonLCD_RESET 15 RB15 LCD Active-Low Reset SignalLCD_RSELECT 16 RB5 LCD Register Select SignalSCL 17 SCL1 LCD Serial ClockSDA 18 SDA1 LCD Data

— 19 VSS Ground— 20 VCAP CPU Logic Filter Capacitor Connection

LCD_CSB 21 RB11 Active-Low LCD Chip Select SignalGPIO1 22 RB12 General Purpose I/O GPIO2 23 RB13 General Purpose I/O PWM2L 24 PWM2L Boost PWM Drive SignalPWM1H 25 PWM1H Buck Converter High Drive SignalPWM1L 26 PWM1L Buck Converter Low Drive Signal

— 27 AVSS Analog Ground— 28 AVDD Analog Positive Supply



2.3 APPLICATION COMPONENTSTable 2-4 describes the application components that are available on the Digital Power Starter Kit (see Figure 2-1 and Figure 2-2 for component locations).

TABLE 2-4: APPLICATION COMPONENTSComponent Label Description

Top Assembly Components (see Figure 2-1)

dsPIC33 ‘GS’ U3 Provides the processing power for the demonstration applications and application development on the starter kit.

3.3V Voltage Regulator U2 Voltage regulator (3.3V) provides power to the dsPIC33, LCD, I/O expander device, push button and temperature sensors.

9V Power Connector J2 A 9V power supply powers the on-board 5V regulator, and loads the MOSFET drivers, as well, to the Buck and Boost DC/DC converters on the starter kit.

Buck Converter Stage BUCK Step-down converter with three on-board resistive selectable loads.Boost Converter Stage BOOST Step-up converter with three on-board resistive selectable loads.Buck/Boost Converter Temperature Sensor

U7/U5 The temperature sensor is strategically placed near the Buck/Boost load resistors. They are intended to provide the board temperature to the DSC and to disable all of the Buck/Boost resistive loads if the temperature exceeds the set limit.

Bottom Assembly Components (see Figure 2-2)

Buck Resistive Load BUCK RLOAD 3.6 Ohm resistive load (3W max). Boost Resistive Load BOOST RLOAD 75 Ohm resistive load (3W max).Buck PWM Drive Circuit U9 Dual high-speed power FET drivers used to turn on/off the Buck

resistive loads.Boost PWM Drive Circuit U4 Dual high-speed power FET drivers used to turn on/off the Boost

resistive loads.On-Board Programmer/Debugger

PKOB Controls the programming/debugging operations of the targetdsPIC33.

5V Voltage Regulator U1 Voltage regulator (5V) provides power to the 3.3V regulator andto the Buck stage gate driver (U9).

Programmer/DebuggerUSB Connector

J5 Provides power to the programmer/debugger and bidirectionalcommunication between the host PC and starter kit.


Hardware

2.4 BOARD CONNECTORSTable 2-5 describes the hardware connections available on the Digital Power Starter Kit (see Figure 2-1 and Figure 2-2 for component locations).

TABLE 2-5: HARDWARE CONNECTIONS

2.5 INDICATORS AND HUMAN INTERFACESTable 2-6 describes the user interfaces available on the starter kit.

TABLE 2-6: INDICATORS AND HUMAN INTERFACES

Label Hardware Element Description

J1 Connector for PICkit™ Programmer/Debugger.J2 9V power supply.J5 Mini-USB connector provides bidirectional communication between the host

PC and the on-board programmer/debugger.

Label Hardware Element Description

D1 Power-on status LED, which indicates that the Digital Power Starter Kit is powered by the 9V supply.

D14 USB bus indicator, which indicates that the device is connected to the USB bus and the programmer/debugger is powered.

D12, D18, D19

Buck converter load LEDs. See schematic for details.

D5, D20, D21

Boost converter load LEDs. See schematic for details.



2.6 TEST POINTSTable 2-7 describes the test points that are available on the Digital Power Starter Kit. See Figure 2-3 for test point locations.

TABLE 2-7: TEST POINTSTest Point Description

TP1 +3.3V Regulator Output VoltageTP2 +15V Boost Voltage Output VoltageTP3 CS_BOOST (White)TP4 GroundTP5 +3.3V Buck Voltage OutputTP6 Boost Converter Bode Test Point (Orange)TP7 N/ATP8 +3.3V_PKOBTP9 Buck Converter Bode Test Point (Orange)TP10 CS_BUCKTP11 Buck Converter High-Side MOSFET Gate Signal Test PointTP12 Buck Converter Low-Side MOSFET Gate Signal Test PointTP13 Boost Converter MOSFET Gate Signal Test PointTP14 VFB_BUCKTP15 VFB_BOOSTTP16 Boost 0.5W Load MOSFET Gate Signal Test PointTP17 Buck 0.5W Load MOSFET Gate Signal Test PointTP18 Buck Converter Bode Test Point (Yellow)TP19 +9V DPSK Board Input VoltageTP20 Boost Converter Bode Test Point (Yellow)TP21 Buck PWM1L Gate Drive Signal (White)TP22 Buck Converter Switch Node Test PointTP23 Buck PWM1H Gate Drive Signal (White)TP24 Boost PWM2L Gate Drive Signal (White)TP25 First Buck 1.25W Load MOSFET Gate Signal Test PointTP26 Second Buck 1.25W Load MOSFET Gate Signal Test PointTP27 First Boost 1.25W Load MOSFET Gate Signal Test PointTP28 Second Boost 1.25W Load MOSFET Gate Signal Test PointTP29 GNDTP30 GND


Hardware

FIGURE 2-3: DIGITAL POWER STARTER KIT TEST POINT LOCATIONS

TP1

TP4

TP6

TP9

TP3TP10

TP23

TP21

TP20

TP18

TP19

TP24

TP14

BOOST_OUT

BUCK_OUT

TP15



2.7 POWER RATING OF CONVERTER STAGESThe Digital Power Starter Kit is designed to be a self-contained power supply with each converter having three on-board resistive loads. Each converter includes one resistive 0.5W load and two resistive 1.25W loads for a total of 3W when the converters are programmed to their nominal output voltages only. See Figure 1-2 for more details on hardware configuration.

2.7.1 Buck ConverterThe Buck converter stage is rated for a maximum of 5W. However, the maximum on-board configurable resistive load is 3W. The output voltage and output current should remain within its Safe Operating Area (SOA) to avoid damage to the board, as shown in the graph in Figure 2-4. The output voltage of the Buck converter (BUCK_Out) can be programmed from a 2.4V to 3.84V output, with a default programmed voltage of 3.3V. The hardware gain, 3.16k/(3.16k + 1k + 20), of the voltage feedback from the BUCK_Out is provided by the resistor divider network, R97 and R105. Additionally, a 20 Ohm resistor, R90, for bode plot measurements is also in series with the feedback network. The hardware gain of the current feedback is provided by the current transformer (T1) with turns ratio (1:125) and burden resistor, R69.

FIGURE 2-4: BUCK CONVERTER SOA CURVE

Note: The output voltages should not be programmed to exceed their nominal values when using the on-board resistive loads as this can cause the resistive loads to exceed their power handling capabilities, leading to potential damage of the board.

0

0.5

1

1.5

2

2.5

0 1 2 3 4 5

Out

put C

urre

nt (A

)

Output Voltage (V)


Hardware

2.7.2 Boost ConverterThe Boost converter stage is rated for a maximum of 5W. However, the maximum on-board configurable resistive load is 3W. The output voltage and output current should remain within the Boost converter Safe Operating Area (SOA) to avoid damage to the board, as shown in the graph in Figure 2-5. The output voltage of the Boost converter (BOOST_Out) can be programmed from a 13.4V to 17.8V output, with a default programmed voltage of 15V. The hardware gain, 1k/(1k + 5.1k + 20), of the voltage feedback from the BOOST_Out is provided by the resistor divider network of R41 and R51. Additionally, a 20 Ohm resistor, R30, for bode plot measurements is also in series with the feedback network. The hardware gain of the current feedback is provided by the current sense resistors, R6 and R61.

FIGURE 2-5: BOOST CONVERTER SOA CURVE

2.8 PROGRAMMER/DEBUGGERThe Digital Power Starter Kit includes an on-board programmer/debugger circuit that provides connectivity over USB. This circuit is hard-wired to the dsPIC® DSC device to provide ICSP™ debugging/programming capability.

TABLE 2-8: PROGRAMMER/DEBUGGER COMPONENTS

0

0.1

0.2

0.3

0.4

10 12 14 16 18 20

Out

put C

urre

nt (A

)

Output Voltage (V)

Component Label Description

On-Board Programmer/Debugger

N/A Controls the programming/debugging operations of the target dsPIC33 ‘GS’ DSC.

Programmer/Debugger USB Connector

J5 Provides power to the programmer/debugger, and bidirectional communication between the host PC and the Digital Power Starter Kit.



NOTES:


USER’S GUIDE
Chapter 3. Demonstration Program Operation

The dsPIC33 ‘GS’ on the Digital Power Starter Kit is preprogrammed with Peak Current Mode control application software that illustrates simultaneous 2-Pole, 2-Zero (2P2Z) compensator control of the output voltage for the two DC/DC converter circuits. This code can be downloaded from the Microchip web site (www.microchip.com).This section covers the following topics:• Program Demonstration• Code Demonstration• Other Code Examples

3.1 PROGRAM DEMONSTRATIONThe demonstration program provides simultaneous closed-loop control of the output voltage for both DC/DC converter stages of the Digital Power Starter Kit.The 2P2Z control loop controls the Buck converter output voltage to 3.3V and the Boost converter output voltage to 15V.The 2P2Z control scheme consists of the following parameters:• Reference – Desired set point for the output voltage• Error – Calculation of (Reference – Feedback). This is the value the compensator

acts upon• System Plant – This is the converter being controlled• Output – Either the output voltage or current• Feedback – The measured output signal levelPlease refer to Section 3.2.4 “2P2Z SW Control Compensator” for further details.The demonstration program requires no manual preparation except to connect 9V to the J2 connector.

FIGURE 3-1: PEAK CURRENT MODE CONTROL LOOP BLOCK DIAGRAM

+ –

VoltageReference

VOUT

Inductor

Voltage Feedback

PWM

CurrentSense

Sense

2P2ZCompensator

ADC

1001011011

S&H

+–

CalculatedPeak

Current

K2

K1VOUT

Internal ComparatorError

System Plant

DAC



FIGURE 3-2: SMPS DEMONSTRATION PROGRAM FLOW CHART

Start

ADC Interrupts

End

Yes

No

No

YesSoft StartRoutine

DisableOutputsDoes Fault

Condition Exist?

Is SoftStart Active?

Initialization Routines:• Peripherals – ADC, PWM, Timers, GPIO,

LCD, etc.• Variables – Buck/Boost Compensator Coefficient

Initializations, Data Buffers• Interrupts – ADC, Timers• Set Soft Start Flag• Initialize I2C™ Module and Initialize Load Configuration

(static/dynamic)

Endless (while (1)) Loop Functions:• Update LCD Display Information• Display Faults (if any)• Check if SW1 has been Pressed (to toggle what is viewed

on display)

ADC Interrupt Routines:• Monitor Converter Currents• Update PWM Duty Cycles• Monitor VIN is Within Allowable Limits• Monitor Converter Temperature(s)• Monitor Converter Voltages • Check if Fault Flags are Active

Fault Check Routine

Soft Start Routine

and DisplayFault(s) on

LCD Screen


Demonstration Program Operation

3.2 CODE DEMONSTRATION

3.2.1 System InitializationWhen power is applied to the board, the program starts by executing the following system initialization routines:• Peripherals – The required peripherals (PWM, ADC, Comparators, I2C™ module,

Timers and GPIO) are configured and enabled.• Interrupts – Include ADC(s), Timer(s), I2C and comparator(s) interrupts.• Loads – Can be configured for either Static mode or Dynamic mode. If Dynamic

mode is selected, a switching frequency can be configured in application SW.

3.2.2 Fault CheckThe program checks for any Faults that might have occurred during program operation. The Fault checks include the following:• Input Over/Undervoltage • Buck/Boost Converter Overtemperature• Buck/Boost Soft StartIf any of the listed Faults occur, the corresponding Fault will be shown on the LCD display. The corresponding PWM signals and loads are disabled until the Fault condi-tion has been cleared. Fault checks are dispersed throughout all the interrupts. If no Fault condition is detected, the program proceeds.

3.2.3 Soft StartThe Soft Start routine ramps up the output voltage in a closed-loop fashion until it is at the programmed output voltage value. This routine ensures that the output does not overshoot the desired voltage.

3.2.4 2P2Z SW Control CompensatorThe 2-Pole, 2-Zero (2P2Z) controller implemented in SW is the digital implementation of the Analog Type II controller. This filter maintains regulation of the output voltage and ensures stability during different line/load conditions. This controller requires three feedback errors, multiplied by their associated coefficients, plus the two latest controller output values, multiplied by their associated coefficients, along the delay line to provide proper compensation of the power converter. The coefficients are determined externally using simulation tools.Reference the smps_2p2z_dspic.s library and smps_control.h header files in the DPSK software package for further implementation details.

3.2.5 System While (1) LoopThe LCD refresh functions are called within the system Idle routine. The routine refreshes the LCD screen based on both user input (SW1) and converter feedback (Fault flags/VIN measurement/converter output voltage). All Fault display updates are performed in the system Idle loop routine, as well as the toggling of the displayed measurements as the results of pressing SW1.



3.3 OTHER CODE EXAMPLESThere are several other SMPS code examples available on the Microchip web site. Refer to the Readme files located in each code example folder for details on what each code example demonstrates. Check the Microchip web site (www.microchip.com/SMPS) for the latest updates to the code examples and for additional code examples.


USER’S GUIDE
Appendix A. Board Layout and Schematics

FIGURE A-1: DIGITAL POWER STARTER KIT LAYOUT (TOP)



FIGURE A-2: DIGITAL POWER STARTER KIT LAYOUT (BOTTOM)


Board Layout and Schematics

FIGURE A-3: DIGITAL POWER STARTER KIT SCHEMATIC REV. 1.2

231

JACK

Pow

er 2

.5m

m M

ale

J2

GN

D

1% 10k

0603

R1

GN

D

+9V

VIN

_FB

+3.3

V

GN

D

GPI

O2

TEM

P_S E

NSE

VIN

_FB

CS_B

OO

ST

VFB_

BOO

ST

PGD

2PG

C2

+3.3

V

SWLCD

_RSE

LECT

LCD

_CLO

CK

GN

D

0.1u

F50

V06

03

C8

VFB_

BUCK

CS_B

UCK

AG

ND

AV

DD

PWM

1LPW

M1H

LCD

_CSB

GN

D

10μF

16V

0805

C14

LCD

_DAT

A

RST

1SC

L4

CSB

3RS

2

VDD

7

VOU

T8

C1+

9

C1-

10

AK

VSS

6

SI5

NHD-C0216CZ-FSW-FBW-3V3

LCD

1

0RR2

1 LCD

_RES

ETLC

D_R

ESET

LCD_

RSEL

ECT

L CD

_CSB

LCD

_CLO

CKLC

D_D

ATA

GN

D

+3.3

V

1μF

16V

0603

C9

1μF

16V

0603

C10

1μF

16V

0603

C12

GN

D

GN

D

0.1

μF50

V06

03

C13

GN

D

1% 10k

0603

R8 0.1

μF50

V06

03

C6

0R 0603

R9

GN

D

+3.3

V

SW

PWM

2L

GPI

O1

GPI

O1

GPI

O2

10μF

16V

0805

C2

10μF

16V

0805

C4

0.1

μF50

V06

03

C3

GN

D

GN

D

GN

D

GRE

EN06

03

D1

GN

D

1%33

0R06

03

R2

+3.3

V

0RR17

GN

D

+3.3

V

0.1u

F50

V06

03C7

1%10

k06

03

R12

ICSP

_MCL

R_VP

P_TA

RGET

1 2 3 4 5 6

HD

R-1

.27

Mal

e 1x

6

DN

P

J3IC

SP_M

CLR_

VPP_

TARG

ET

+3.3

V

PGC2

PGD

2

GN

D

+3.3

V

GN

D

2

VIN

1VO

UT

3

MCP

1703

/3.3

V

U2

MCP

1703

/5V

GN

D

2

VIN

1VO

UT

3U

1

GN

D

+5V

0.1

μF50

V06

03

C11

GN

D

10μF

16V

0805

C57

1%60

.4R

1206

R23

TP L

OO

P Re

d

TP

1

TP L

OO

P Re

d

TP

19

1 2 3 4 5 6J1

123 BA

T54S

LT1

D15

+3.3

V GN

D

123

BAT5

4SLT

1

D16

+3.3

V

GN

D

L3

2.21

k06

031%

R4

TP L

OO

P W

hite

TP21

TP L

OO

P W

hite

TP24

TP L

OO

P W

hite

TP23

SCL

SDA

MCL

R1

/AN

0CM

P1A

2

AN

13

AN2/

CMP2

A4

AN3

5

AN4

6

RB10

7

VSS

8RB

19

AN7

10

PGED

211

PGEC

212

VDD

13

RB8

14

RB1 5

15

RB5

16

SCL1

17

SDA1

18

VSS

19

VCA

P20

RB11

21

RB12

22

RB13

23

PWM

2L24

PWM

1H25

PWM

1L26

AVSS

27

AVD

D28

dsPI

C33

GS

Serie

s

U3

2.2k

0603

1%R1

652.

2k06

031%

R166

+3.3

V+3

.3V

130

pF50

V06

03

C1

130

pF50

V06

03

C5

GN

DG

ND

SDA

SCL

+3.3

V 0.1

μF50

V06

03

C29

TEM

P_SE

NSE

_U7

NC

1

GN

D2

VOU

T3

VDD

4

NC

5

MCP

9700

U7

0.1

μF50

V06

03

C30

GN

D

GN

D

1%12

0R 0603

R72

GN

D

+3.3

V

123 D

NP

D10

123 D

NP

D8

GN

D

GN

D

+3.3

V

+3.3

V

123 BA

T54S

LT1

D11

+3.3

V

GN

D

GN

D

1800

pF50

V06

03C21 G

ND

14

23

SW1

TP L

OO

P Bl

ack

TP4

GN

D

DN

P

R53

0R06

03

R56

0R06

03

R59

DN

P

R60

+3.3

V 0.1

μF50

V06

03

C67

TEM

P_SE

NSE

_U5

NC

1

GN

D2

VOU

T3

VD

D4

NC

5

MCP

9700

U5

0.1

μF50

V06

03

C66

GN

D

GN

D

1%12

0R 0603

R10

GN

D

B21

GN

D2

B13

A4

VCC

5S

6

74LV

C1G

3157

U6

0.1

μF50

V06

03

C68

GN

D

GN

D

+3.3

V

Buck

Boos

tTE

MP_

SEN

SE

GPI

O2

I2 C™

Com

mun

icat

ion



FIGURE A-4: DIGITAL POWER STARTER KIT SCHEMATIC REV. 1.2 (BUCK CONVERTER)

220

μF50

V

C31

+9V

GN

D

D

G

S

MCP

8705

0Q

3

4.7

μF25

V08

05

C 33

0.1

μF50

V06

03

C34

+5V 1%

3.3k

0603

R106

1%3.

3k06

03

R107

0.1

μF50

V06

03

C32

GN

D

PWM

1H

PWM

1L

GN

D

DN

P

D9

1%11

R06

03

R79

1% 10k

0603

R74

1%11

R

0603

R96

GN

D

DN

PR9

1 DN

PC3

9

GN

D

100

μF35

V

C35

100

μF35

V

C37

22μF

16V

1206

C38

1%1k 06

03

R97

1%20

R08

05

R90

GRE

EN06

03

D12

GN

D

4

1,2,3

5,6,7,8

NT

MS5

838N

L

Q4

10k

0603

1%R

98

1%3.

16k 0603

R105

VFB

_BU

CK

GN

D

Buck

Con

vert

er

GN

D

1% 10k

0603

R104

1μF

16V

0603

C36

PHA

SE1

PWM

_HI

2

PWM

_LO

3

GN

D

4

LOW

DR

5

Vcc

6BO

OT

7

HIG

HD

R8 M

CP14

700

U9

47pF

50V

0603

C28

1%1.

2k 0603

R68

DN

PR7

0

1 378

CST2

-125

LB

T1

CS_B

UCK

1800

pF50

V06

03

C40

22R

1206

1%R7

56.

49R

1206

1%R7

66.

49R

1206

1%R7

7

6.49

R12

061%

R78

22R

1206

1%R8

0

6.49

R12

061%

R81

6.49

R12

061%

R82

6.49

R12

061%

R83

22R

1206

1%R8

5

6.49

R12

061%

R86

6.49

R12

061%

R87

6.49

R12

061%

R88

22R

1206

1%R

92

6.49

R12

061%

R93

6.49

R12

061%

R94

6.49

R12

061%

R95

6.49

R12

061%

R99

6.49

R12

061%

R100

6.49

R12

061%

R101

6.49

R12

061%

R102

1% 11R

0603

R71

TP

22

TP L

OO

P O

rang

e

TP

9

TP L

OO

P W

hite

TP

10

TP L

OO

P Re

d

TP

5

22μH

L2

TP

11 TP12

TP

17

D

G

S

MCP

8705

0Q

5

BAT5

4

D7

1%2.

21k

0603

R103

1%12

0R06

03

R69

TP L

OO

P Y

ello

wT

P18 2

7

VDD

6G

ND

3

TC44

27A

U8A

45

VDD

6G

ND

3

TC44

27A

U8B

GN

D

D4

4

1,2,3

5,6,7,8

NTM

S583

8NL

Q9

GN

D

1%11

R 0603

R16

D9

10k 06

031%R

19

GN

D

6.49

R12

061%

R20

6.49

R12

061%

R22

6.49

R12

061%

R24

6.49

R12

061%

R25

6.49

R12

061%

R55

6.49

R12

061%

R73

6.49

R12

061%

R84

6.49

R12

061%

R89

4

1,2,3

5,6,7,8

NTM

S583

8NL

Q10

GN

D

1%11

R 0603

R144

D 10

10k 06

031%R1

45

GN

D

+9V

+9V

GN

D

I4 I1

D4

D1

27

VD

D6

GN

D3

TC44

27A

U14

A

45

VDD

6G

ND

3

TC44

27A

U14

B

+9V

+9V

GN

D

I9I10

D9

D10

27

VDD

6G

ND

3

TC44

27A

U15

A

45

VDD

6G

ND

3

TC44

27A

U15

B

+9V

+9V

GN

D

I11

I12

D11

D12

3.3k

06031%

R146

3.3k

06031%

R149

GN

D

3.3k

06031%

R148

3.3k

06031%

R151

GN

D

3.3k

06031%

R147

3.3k

06031%

R150

GN

D

DN

PR1

52

+3.3

V

A21

A12

A03

RESE

T4

GP6

15

GP7

16

VSS

17VD

D18

NC

5

NC

6

INT

7

NC

8

GP0

9

GP5

14G

P413

GP3

12G

P211

GP1

10SC

L19

SDA

20

EP21

MCP

2300

8

U13

GN

D

SCL

SDA

+3.3

V

0.1

μF50

V06

03C27 G

ND

I4 I9 I10

I1 I12

I11

DN

PR3

GRE

END

NP

D2

GRE

END

NP

D3

GN

DG

ND

27K

1206

1%R5

470

pF50

V12

06

C26

GN

D

1935

161

12

J7

GN

D

0.5W

1.25

W1.

25W

TP

25T

P26

TP L

OO

P Bl

ack

TP

29 GN

D

0.1

μF50

V06

03

C63

4.7

μF25

V08

05

C62

GN

DG

ND

0.1

μF50

V06

03

C61

4.7

μF25

V08

05

C60

GN

DG

ND

0.1

μF50

V06

03

C59

4.7

μF25

V08

05

C58

GN

DG

ND

5.1R

0805

1%R1

4

TP

14

GRE

EN06

03D18

1%2.

21k

0603

R15

GRE

EN06

03

D19

1%2.

21k

0603

R18

BAT5

4D

6

+3.3

V

100

μF35

V

C24

DN

P

C64

GN

D


Board Layout and Schematics

FIGURE A-5: DIGITAL POWER STARTER KIT SCHEMATIC REV. 1.2 (BOOST CONVERTER)

+9V

0.1

μF50

V06

03

C15

GN

DG

ND

D

G

S

MCP

8705

0Q

2

4.7

μF25

V08

05

C22

0.1

μF50

V06

03C23

+9V

1%3.

3k06

03

R58

GN

D

1%11

R 0603

R52

GN

D

1% 10k

0603

R57

220

μF50

V

C17

10μF

35V

1206

C18

1%20

R08

05

R30 1%

1k 0603

R51

1%10

k06

03

R35

GRE

E N06

03

D5

GN

D

1%5.

1k06

03

R41

SS33

D4

GN

DG

ND

CS_B

OO

ST

PWM

2L

Boos

t Con

vert

er

22μF

25V

1210

C16

VFB

_BO

OST

1%3.

9R12

061/

2W

R61

DN

PC2

5

TP L

OO

P O

rang

eT

P6

TP L

OO

P Re

dTP

2

TP

15

TP

13

10R 06

031%

R62

1800

pF50

V06

03

C19

TP L

OO

P Ye

llowT

P20

GN

D

4

1,2,3

5,6,7,8 NTM

S583

8NL

Q1

10k

0603

1%R154

470R

1206

1%R2

613

7R12

061%

R29

137R

1206

1%R3

1

137R

1206

1%R3

8

470R

1206

1%R2

7

137R

1206

1%R3

913

7R12

061%

R40

137R

1206

1%R4

6

470R

1206

1%R3

6

137R

1206

1%R4

713

7R12

061%

R48

137R

1206

1%R1

55

470R

1206

1%R3

7

137R

1206

1%R1

5613

7R12

061%

R157

137R

1206

1%R3

213

7R12

061%

R28

137R

1206

1%R3

313

7R12

061%

R34

137R

1206

1%R4

2

1%11

R 0603

R45

TP16

GN

D

D1

4

1,2,3

5,6,7,8 NTM

S583

8NL

Q11

GN

D

1%11

R 0603

R161

D11

10k 06

031%R1

63

GN

D

137R

1206

1%R4

313

7R12

061%

R44

137R

1206

1%R4

913

7R12

061%

R50

137R

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