Microchip Technology ADM00612 User Manual Download Page 10

Preface

 2016 Microchip Technology Inc.

 

 DS50002437A-page 9

RECOMMENDED READING

This user's guide describes how to use the MCP1643 RGB LED Driver Demonstration
Board. Other useful documents are listed below. The following Microchip documents
are available and recommended as supplemental reference resources: 

• MCP1643 Data Sheet – “

1

 

MHz Low Start-up Voltage Synchronous Boost 

LED Constant Current Regulator

” (DS20005208)

• PIC16F1455 Data Sheet – 

“USB Port Power Controller with Charger 

Emulation” 

(DS200005346)

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.

DEVELOPMENT SYSTEMS CUSTOMER CHANGE NOTIFICATION SERVICE

Microchip’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, assemblers, linkers

and other language tools. These include all MPLAB C compilers; all MPLAB
assemblers (including MPASM™ assembler); all MPLAB linkers (including
MPLINK™ object linker); and all MPLAB librarians (including MPLIB™ object
librarian).

Emulators

 – The latest information on Microchip in-circuit emulators.This

includes the MPLAB REAL ICE™ and MPLAB ICE 2000 in-circuit emulators.

In-Circuit Debuggers

 – The latest information on the Microchip in-circuit

debuggers. This includes MPLAB ICD 3 in-circuit debuggers and PICkit™ 3
debug express.

MPLAB

®

 IDE

 – The latest information on Microchip MPLAB IDE, the Windows

®

Integrated Development Environment for development systems tools. This list is
focused on the MPLAB IDE, MPLAB IDE Project Manager, MPLAB Editor and
MPLAB SIM simulator, as well as general editing and debugging features.

Programmers

 – The latest information on Microchip programmers. These include 

production programmers such as MPLAB REAL ICE in-circuit emulator, MPLAB 
ICD 3 in-circuit debugger and MPLAB PM3 device programmers. Also included 
are nonproduction development programmers such as PICSTART

®

 Plus and 

PICkit 2 and 3.

Summary of Contents for ADM00612

Page 1: ...ss mainly focus on the distribution of electronic components Line cards we deal with include Microchip ALPS ROHM Xilinx Pulse ON Everlight and Freescale Main products comprise IC Modules Potentiometer...

Page 2: ...2016 Microchip Technology Inc DS50002437A MCP1643 RGB LED Driver Demonstration Board User s Guide...

Page 3: ...pts 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 ha...

Page 4: ...2016 Microchip Technology Inc DS50002437A page 3 Object of Declaration MCP1643 RGB LED Driver Demonstration Board...

Page 5: ...MCP1643 RGB LED Driver Demonstration Board User s Guide DS50002437A page 4 2016 Microchip Technology Inc NOTES...

Page 6: ...1 4 MCP1643 RGB LED Driver Demonstration Board Overview 12 1 5 MCP1643 RGB LED Driver Demonstration Board Features 13 1 6 What the MCP1643 RGB LED Driver Demonstration Board Kit Includes 13 Chapter 2...

Page 7: ...MCP1643 RGB LED Driver Demonstration Board User s Guide DS50002437A page 6 2016 Microchip Technology Inc NOTES...

Page 8: ...ntains flow charts for the MCP1643 RGB LED Driver Demonstration Board Appendix A Schematics ad Layouts Shows the schematic and layout diagrams for the MCP1643 RGB LED Driver Demonstration Board Append...

Page 9: ...dialog button Click OK A 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...

Page 10: ...ation 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 fami...

Page 11: ...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 sal...

Page 12: ...a PWM only device that operates at a fixed 1 MHz switching frequency The device has an operating input voltage range from 0 5V to 5V VIN VLED with a 0 65V start up voltage For applications that requi...

Page 13: ...CP1643 RGB LED Driver Demonstration Board was developed to help engineers reduce product design cycle time The intensity of each color of the LED can be adjusted using individual potentiometers for ea...

Page 14: ...fter start up Start up voltage 0 8V at full load MCP1643 PWM switching frequency 1 MHz RGB multiplexing frequency 70 Hz Fixed output current for all colors 350 mA Start Stop functions with push button...

Page 15: ...MCP1643 RGB LED Driver Demonstration Board User s Guide DS50002437A page 14 2016 Microchip Technology Inc NOTES...

Page 16: ...efficiency by integrating the low resistance N Channel boost switch and the synchronous P Channel switch and by using a low voltage reference of 0 120V Figure 2 1 illustrates the components from the...

Page 17: ...poral demonstration state 2 3 BOARD TESTING Follow these steps to test the board functionalities 1 Connect the input supply as shown in Figure 2 3 or connect a AA battery in the battery slot on the ba...

Page 18: ...enables the MCP1643 and controls the RGB LED in order to power each color independently see Figure 2 4 The amount of time each LED is ON is set by the user through the three potentiometers FIGURE 2 4...

Page 19: ...rs would otherwise uncontrollably discharge into the LED FIGURE 2 5 PIC16F1455 Output Voltage and Enable Signal 2 3 3 Programming the PIC16F1455 Microcontroller The board comes factory programmed with...

Page 20: ...P1643 RGB LED Driver Demonstration Board Figure 3 1 depicts the Main routine flow chart FIGURE 3 1 Main Code Sequence START Initialize ADC interrupts Timer 0 Run start up sequence Read ADCs Determine...

Page 21: ...delay Blue counter max Blue interval counter max Blue intensity 0 interval delay Red counter max Red interval counter max Red interval STOP MCP1643 Enable Enable Green LED Disable Green LED Enable Bl...

Page 22: ...1 Appendix A Schematics and Layouts A 1 INTRODUCTION This appendix contains the following schematics and layouts for the MCP1643 RGB LED Driver Demonstration Board Board Schematic Board Top Silk Board...

Page 23: ...MCP1643 RGB LED Driver Demonstration Board User s Guide DS50002437A page 22 2016 Microchip Technology Inc A 2 BOARD SCHEMATIC 3 5 AA CMD_ CMD_G 4 5 5 6 6 5 5 5 5 7 8...

Page 24: ...Schematics and Layouts 2016 Microchip Technology Inc DS50002437A page 23 A 3 BOARD TOP SILK A 4 BOARD TOP SILK AND COPPER A 5 BOARD TOP COPPER A 6 BOARD BOTTOM COPPER A 7 BOARD BOTTOM SILK AND COPPER...

Page 25: ...MCP1643 RGB LED Driver Demonstration Board User s Guide DS50002437A page 24 2016 Microchip Technology Inc A 8 BOARD BOTTOM SILK...

Page 26: ...green blue 2 1V 3 5V 3 5V 300 mA 350 mA 350 mA SMD TO 252 3 Lumex Inc SML LX1610RGBW A 1 PCB1 MCP1643 Printed Circuit Board 04 10346 1 4 Q1 Q2 Q3 Q4 Transistor FET N Channel IRLML2402 20V 1 2A 540 mW...

Reviews: