TC650 Fan Control Demo Board User's Guide
Contents
1. 5V VFAN ili FAN TR TP Q1 C4 B TC650 TC651 Top Layer TC650 TC651 Bottom Layer FIGURE A 1 TC650 TC651 Demo Board Top and Bottom Layers 2002 Microchip Technology Inc DS51304A page 9 TC650 Fan Control Demo Board Users Guide VDD O e o c VFAN T 1 uF V Test Point TP4 1 TC650 TC651 m 8 Q DD PWM Si2302 U1 7 m 2 NC GND 1K D Shutdown v y Input 3 SHDN TOVER 6 CED JP Red a GND Nc 5 FIGURE A 2 TC650 Demo Board Functional Block Diagram A 3 DEMO BOARD COMPONENTS Table A 1 lists the various components and associated values that comprise the TC650 Demo Board TABLE A 1 FAN CONTROL DEMO BOARD COMPONENTS AND VALUES Component Typical Value Comments C 1 uF 1206 chip capacitor Power supply filter D 4 5 mA miniature red LED LED lights when TovER output is LOW active Q Logic Level MOSFET Transistor output option A logic level MOSFET Si2302 is used on the TC650 to accommodate various types of fans The output drive device can also be an NPN transistor depending on cost constraints and fan current R 1 ke 1206 chip resistor D current limiting resistor U TC650AEVUA TC650 or TC651 fan control ICs low temperature limit T 25 C high temperature limit Tu 45 C IA AA ZZ EEE DS51304A page 10 2002 Microchip Technology Inc Boa2. MICROCHIP TC650 Fan Control Demo Board User s Guide 2002 Microchip Technology lnc 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 knowl edge 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 Information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates It is your responsibility to ensure that your application meets with you
3. mA 2 MPS2222 100 30 30 150 800 MPS2222A 100 30 40 150 800 2N4400 150 20 40 100 820 2N4401 150 20 40 100 820 MPS6601 180 50 25 250 780 MPS6602 180 50 40 250 780 Note The values that are listed in the table represent typical values for Ta 25 C r rr 2002 Microchip Technology Inc DS51304A page 7 TC650 Fan Control Demo Board Users Guide 2 2 3 System Connection for 5V Operation Figure 2 2 shows typical wiring connections to the Fan Control Demo Board The fan operating voltage is 12V while the Fan Control Board operates from a supply voltage of 5V TC650DEMO 5V V DD GND TC650 gen edia GND GNDFAN 12V VFAN Power Supply Fan FIGURE 2 2 Typical Wiring Connections to Fan Module for 12V Fan and 5V Demo Board Supply Note The grounds for the 12V fan supply and the 5V Vpp supply should be tied together at the power supply 2002 Microchip Technology Inc DS51304A page 8 AN TC650 Fan Control Demo Board MICROCHIP User s Guide Appendix A Board Layout A 1 INTRODUCTION This appendix contains general information concerning the schematics layout and components for the TC650 Demo Board A 2 BOARD SCHEMATIC AND LAYOUT Figure A 1 depicts the layout for the top and bottom layers of the TC650 Demo Board Figure A 2 shows a functional block diagram for the TC650 Demo Board
4. Suite 22 41 Rawson Street Epping 2121 NSW Australia Tel 61 2 9868 6733 Fax 61 2 9868 6755 China Beijing Microchip Technology Consulting Shanghai Co Ltd Beijing Liaison Office Unit 915 Bei Hai Wan Tai Bldg No 6 Chaoyangmen Beidajie Beijing 100027 No China Tel 86 10 85282100 Fax 86 10 85282104 China Chengdu Microchip Technology Consulting Shanghai Co Ltd Chengdu Liaison Office Rm 2401 2402 24th Floor Ming Xing Financial Tower No 88 TIDU Street Chengdu 610016 China Tel 86 28 86766200 Fax 86 28 86766599 China Fuzhou Microchip Technology Consulting Shanghai Co Ltd Fuzhou Liaison Office Unit 28F World Trade Plaza No 71 Wusi Road Fuzhou 350001 China Tel 86 591 7503506 Fax 86 591 7503521 China Hong Kong SAR Microchip Technology Hongkong Ltd Unit 901 6 Tower 2 Metroplaza 223 Hing Fong Road Kwai Fong N T Hong Kong Tel 852 2401 1200 Fax 852 2401 3431 China Shanghai Microchip Technology Consulting Shanghai Co Ltd Room 701 Bldg B Far East International Plaza No 317 Xian Xia Road Shanghai 200051 Tel 86 21 6275 5700 Fax 86 21 6275 5060 China Shenzhen Microchip Technology Consulting Shanghai Co Ltd Shenzhen Liaison Office Rm 1812 18 F Building A United Plaza No 5022 Binhe Road Futian District Shenzhen 518033 China Tel 86 755 82901380 Fax 86 755 82966626 China Qingdao Rm B503 Fullhope Plaza No 12 Hong Kong Central
5. Rd Qingdao 266071 China Tel 86 532 5027355 Fax 86 532 5027205 India Microchip Technology Inc India Liaison Office Divyasree Chambers 1 Floor Wing A A3 A4 No 11 OShaugnessey Road Bangalore 560 025 India Tel 91 80 2290061 Fax 91 80 2290062 Japan Microchip Technology Japan K K Benex S 1 6F 3 18 20 Shinyokohama Kohoku Ku Yokohama shi Kanagawa 222 0033 Japan Tel 81 45 471 6166 Fax 81 45 471 6122 Korea Microchip Technology Korea 168 1 Youngbo Bldg 3 Floor Samsung Dong Kangnam Ku Seoul Korea 135 882 Tel 82 2 554 7200 Fax 82 2 558 5934 Singapore Microchip Technology Singapore Pte Ltd 200 Middle Road 07 02 Prime Centre Singapore 188980 Tel 65 6334 8870 Fax 65 6334 8850 Taiwan Microchip Technology Barbados Inc Taiwan Branch 11F 3 No 207 Tung Hua North Road Taipei 105 Taiwan Tel 886 2 2717 7175 Fax 886 2 2545 0139 EUROPE Austria Microchip Technology Austria GmbH Durisolstrasse 2 A 4600 Wels Austria Tel 43 7242 2244 399 Fax 43 7242 2244 393 Denmark Microchip Technology Nordic ApS Regus Business Centre Lautrup hoj 1 3 Ballerup DK 2750 Denmark Tel 45 4420 9895 Fax 45 4420 9910 France Microchip Technology SARL Parc d Activite du Moulin de Massy 43 Rue du Saule Trapu Batiment A ler Etage 91300 Massy France Tel 33 1 69 53 63 20 Fax 33 1 69 30 90 79 Germany Microchip Technology GmbH Steinheilstrasse 10 D 85737 Ismaning Germany
6. 002 Microchip Technology Inc DS51304A page 3 TC650 Fan Control Demo Board Users Guide NOTES DS51304A page 4 2002 Microchip Technology Inc TC650 Fan Control Demo Board MICROCHIP User s Guide Chapter 2 Getting Started This chapter describes the TC650 Demo Board s configuration how it functions and lists typical fan demo board operating configurations for fan applications The board is eguipped with a TC650AEVUA device which features a minimum temperature limit T of 25 C 40 duty cycle and a maximum temperature limit TH of 45 C 100 duty cycle 2 1 TC650 DEMO BOARD FUNCTIONAL DESCRIPTION 2 1 1 PWM Output The pulse width modulation PWM pin is designed to drive a low cost transistor or MOSFET as the low side power switching element in the system A 2N2222 type small signal BJT can be used for fans up to 300 mA For larger current fans up to 1 amp a logic level N channel MOSFET must be used Since the system relies on pulse width modulation rather than linear power control the dissipation in the power switch is kept to a minimum Generally very small devices such as the TO 92 or SOT will suffice Test Point TP can be connected to an oscilloscope for observing PWM output characteristics 2 1 2 SHDN The fan can be unconditionally shut down by pulling the SHDN pin low This function can be implemented by removing jumper JP4 then grounding pin 3 For details see Figure A 2 in the Appendix A sec
7. GURE 2 1 Output Driver Configuration Options DS51304A page 6 2002 Microchip Technology Inc Getting Started 2 2 1 Using Logic Level MOSFETS The TC650 Demo Board is eguipped with a logic level MOSFET Si2302 Using a MOSFET results in low system voltage losses and reduced output loading on the TC650 651 The low Rpson of this MOSFET 0 0850 enables it to be used in high current fan applications gt 200 mA Table 2 2 lists examples of MOSFETS that can be utilized for A4 TABLE 2 2 MOSFETs FOR Q Device Vos Ves th Ip Rps on V V A lt gt 512302 20 15 2 8 0 085 Si4410 30 3 0 8 0 02 MGSF1N02E 20 15 0 75 0 10 2 2 2 Using Bipolar Driver Transistors Fans with operating currents of 50 mA to 300 mA can be driven using a single bipolar transistor The transistor must have sufficient gain hpg in order to reach saturation when the base is driven with 5 mA of current minimum output current spec of TC650 651 and the collector is conducting full fan current A 2N2222A is a good choice A base current limiting resistor is reguired with bipolar transistors The correct value for this resistor can be determined as follows EGUATION Vou VBE SAT IR BASE RBASE Table 2 3 lists suggested Bipolar transistors for Q4 TABLE 2 3 BIPOLAR TRANSISTORS FOR Q Vpp 5 0V Ipase 5 mA Device VCE SAT hFE VBR CEO Ic RBASE mV V
8. Tel 49 89 627 144 0 Fax 49 89 627 144 44 Italy Microchip Technology SRL Centro Direzionale Colleoni Palazzo Taurus 1 V Le Colleoni 1 20041 Agrate Brianza Milan Italy Tel 39 039 65791 1 Fax 39 039 6899883 United Kingdom Microchip Ltd 505 Eskdale Road Winnersh Triangle Wokingham Berkshire England RG41 5TU Tel 44 118 921 5869 Fax 44 118 921 5820 12 05 02 DS51304A page 12 2002 Microchip Technology Inc
9. er s end eguipment for system evaluation An external 2 8V to 5 5V power supply is required for the operation of the TC650 The TC650 Demo Board is eguipped with the following components 1 1 uF 1206 Chip Capacitor 2 1 KQ 1206 Chip Resistor 3 4 5 mA Miniature Red LED 4 Logic Level MOSFET Si2302 5 TC650AEVUA Fan Control IC If any component is damaged or missing please contact your nearest Microchip sales office listed on the back of this publication C650 TC651 1D501 FIGURE 1 1 The TC650 TC651 Fan Control Demo Board DS51304A page 2 2002 Microchip Technology Inc General Information 1 3 REFERENCE DOCUMENTS Other Reference Documents may be obtained by contacting your nearest Microchip sales office listed on the back of this document or by visiting the Microchip website www microchip com Technical Library CD ROM DS00161 or the individual data sheet TC650 TC651 Data Sheet DS21450 Analog 8 Interface Families Data Book 2002 DS00207 2002 Technical Documentation Analog amp Interface Product Families CD ROM DS51205 Suppressing Acoustic Noise in Pulse Width Modulation PWM Fan Speed Control Systems Application Note AN771 Speed Error in Pulse Width Modulation PWM Fan Control Systems Application Note AN772 TC65X Fan Speed Controller Family Sell Sheet DS21625 TC650DEMO and TC652DEMO Fan Controller Demo Boards for the TC650 1 2 3 Sell Sheet DS51254 a a aaa aaa 2
10. les and Service 12 2002 Microchip Technology Inc DS51304A page iii TC650 Fan Control Demo Board Users Guide NOTES DS51304A page iv 2002 Microchip Technology Inc TC650 Fan Control Demo Board MICROCHIP User s Guide Chapter 1 General Information 1 1 INTRODUCTION Thank you for purchasing the TC650 Fan Control Demo Board from Microchip Technology Inc The TC650 Fan Control Demo Board is an evaluation tool that allows the user to quickly prototype fan control circuits based on Microchip s TC650 or TC651 pulse width modulation PWM Fan Control ICs A logic level MOSFET drive device allows the fan control demo board to be used with virtually any brushless DC fan A red LED status indicator gives a visual indication of an over temperature alert temperature is 10 C higher typically than the high temperature limit The TC650 Demo Board has the following features 1 Complete implementation of TC650 or TC651 fan control circuitry on a 1 0 x 1 0 board Temperature proportional fan speed control Over temperature alert Installs directly into user s end equipment Speeds up prototyping system development and system thermal characterization M BO RD 2002 Microchip Technology Inc DS51304A page 1 TC650 Fan Control Demo Board Users Guide 1 2 THE TC650 FAN CONTROL DEMO BOARD The TC650 Fan Control Demo Board Figure 1 1 measures only 1 0 inch x 1 0 inch allowing direct installation to the us
11. nology Incorporated in the U S A All other trademarks mentioned herein are property of their respective companies 2002 Microchip Technology Incorporated Printed in the U S A All Rights Reserved LI Printed on recycled paper Microchip received QS 9000 quality system certification for its worldwide headquarters design and wafer fabrication facilities in Chandler and Tempe Arizona in July 1999 and Mountain View California in March 2002 The Company quality system processes and procedures are QS 9000 compliant for its PICmicro 8 bit MCUs KEELOQ code hopping devices Serial EEPROMs microperipherals non volatile memory and analog products In addition Microchip s quality system for the design and manufacture of development systems is ISO 9001 certified DS51304A page ii 2002 Microchip Technology Inc AN TC650 Fan Control Demo Board MICROCHIP User s Guide Table of Contents Chapter 1 General Information 1 1 Taise llen eTo 1 1 2 The TC650 Fan Control Demo Board sees 2 1 3 Reference Documents ninani 3 Chapter 2 Getting Started 2 1 TC650 Demo Board Functional Description 5 2 2 Typical Module Configurations sss eee eee eee eee eee D Appendix A Board Layout Al INAUA zisk ol nd k np 9 A 2 Board Schematic and Layout 9 A 3 Demo Board Components sss sese eee eee 10 Worldwide Sa
12. r specifications No representation or warranty is given and no liability is assumed by Microchip Technology Incorporated with respect to the accuracy or use of such information or infringement of patents or other intellectual property rights arising from such use or otherwise Use of Microchip s products as critical com ponents in life support systems is not authorized except with express written approval by Microchip No licenses are con veyed implicitly or otherwise under any intellectual property rights DNV Certification inc DNV MSC The Netherlands Accredited by the RVA ANSI RAB A OMS ISO 9001 QS 9000 REGISTERED FIRM eee A Eu Trademarks The Microchip name and logo the Microchip logo KEELOG MPLAB PIC PICmicro PICSTART and PRO MATE are registered trademarks of Microchip Technology Incorporated in the U S A and other countries FilterLab microID MXDEV MXLAB PICMASTER SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U S A dsPIC dsPICDEM net ECONOMONITOR FanSense FlexROM fuzzyLAB In Circuit Serial Programming ICSP ICEPIC microPort Migratable Memory MPASM MPLIB MPLINK MPSIM PICC PICDEM PICDEM net rfPIC Select Mode and Total Endurance are trademarks of Microchip Technology Incorporated in the U S A and other countries Serialized Quick Turn Programming SQTP is a service mark of Microchip Tech
13. rd Layout NOTES 2002 Microchip Technology Inc DS51304A page 11 MICROCHIP WORLDWIDE SALES AND SERVICE AMERICAS Corporate Office 2355 West Chandler Blvd Chandler AZ 85224 6199 Tel 480 792 7200 Fax 480 792 7277 Technical Support 480 792 7627 Web Address http www microchip com Rocky Mountain 2355 West Chandler Blvd Chandler AZ 85224 6199 Tel 480 792 7966 Fax 480 792 4338 Atlanta 3780 Mansell Road Suite 130 Alpharetta GA 30022 Tel 770 640 0034 Fax 770 640 0307 Boston 2 Lan Drive Suite 120 Westford MA 01886 Tel 978 692 3848 Fax 978 692 3821 Chicago 333 Pierce Road Suite 180 Itasca IL 60143 Tel 630 285 0071 Fax 630 285 0075 Dallas 4570 Westgrove Drive Suite 160 Addison TX 75001 Tel 972 818 7423 Fax 972 818 2924 Detroit Tri Atria Office Building 32255 Northwestern Highway Suite 190 Farmington Hills MI 48334 Tel 248 538 2250 Fax 248 538 2260 Kokomo 2767 S Albright Road Kokomo Indiana 46902 Tel 765 864 8360 Fax 765 864 8387 Los Angeles 18201 Von Karman Suite 1090 Irvine CA 92612 Tel 949 263 1888 Fax 949 263 1338 San Jose Microchip Technology lnc 2107 North First Street Suite 590 San Jose CA 95131 Tel 408 436 7950 Fax 408 436 7955 Toronto 6285 Northam Drive Suite 108 Mississauga Ontario L4V 1X5 Canada Tel 905 673 0699 Fax 905 673 6509 ASIA PACIFIC Australia Microchip Technology Australia Pty Ltd
14. tion 2 1 3 Over Temperature Alert The TC650 TC651 devices include an on chip over temperature alarm signal Tover that goes low when the temperature of the chip exceeds Ty by 10 C typical When the junction temperature rises to approximately 55 C Tu 10 C 45 C 10 C the Tover Signal is asserted and the red LED light turns on 2002 Microchip Technology Inc DS51304A page 5 TC650 Fan Control Demo Board Users Guide 2 2 TYPICAL MODULE CONFIGURATIONS The TC650 TC651 integrated temperature sensors and brushless DC fan speed controllers are designed to drive an external transistor or MOSFET for modulating power to the fan The PWM pin has a minimum source current of 5 mA and a minimum sink current of 1 mA Bipolar transistors or MOSFETSs may be used as the power switching element Table 2 1 lists the suggested output drive device vs fan motor current Additionally see Figure 2 1 for output drive configuration options TABLE 2 1 SUGGESTED OUTPUT DRIVE DEVICE VS FAN MOTOR CURRENT Full Speed Fan Motor Logic MOSFET Bipolar Transistor Current Q1 Standard Optional 100 mA X 200 mA X X 300 mA X X 400 mA X 500 mA X 600 mA X 700 mA X 800 mA X 900 mA X 1A X VDD VDD Fan RBASE VOUT O K a GND a Single Bipolar Transistor Q Vout O GND b N Channel MOSFET FI
Download Pdf Manuals
Related Search