Microchip Technology TC64X User Manual
Microchip Technology TC64X User Manual

Microchip Technology TC64X User Manual

Fan control demo board

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TC64X/TC64XB Fan Control
Demo Board User's Guide
 2003 Microchip Technology Inc.
DS21401C

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Summary of Contents for Microchip Technology TC64X

  • Page 1 TC64X/TC64XB Fan Control Demo Board User’s Guide  2003 Microchip Technology Inc. DS21401C...
  • Page 2 PRO MATE and PowerSmart are registered trademarks of No representation or warranty is given and no liability is Microchip Technology Incorporated in the U.S.A. and other assumed by Microchip Technology Incorporated with respect countries.
  • Page 3: Table Of Contents

    DEMO BOARD USER’S GUIDE Table of Contents Chapter 1. General Information 1.1 Introduction ..................... 1 1.2 TC64X/TC64XB Fan Control Demo Board ............. 2 1.3 Reference Documents ..................4 Chapter 2. Getting Started 2.1 TC64X/TC64XB Fan Control Demo Board Typical Module Configurations ............... 5 2.2 System Connection For +5V Operation ............
  • Page 4 TC64X/TC64XB Fan Control Demo Board User’s Guide NOTES:  2003 Microchip Technology Inc. DS21401C-page iv...
  • Page 5: Chapter 1. General Information

    (stalled, open or unconnected fan) or an overtemperature condition. The TC64X/TC64XB Fan Control Demo Board has the following features: 1. Complete implementation of TC64X or TC64XB fan control circuitry on a 1.5" x 2.0" board 2. Works with standard thermistors 3.
  • Page 6: Tc64X/Tc64Xb Fan Control Demo Board

    TC64X/TC64XB Fan Control Demo Board User’s Guide THE TC64X/TC64XB FAN CONTROL DEMO BOARD The TC64X/TC64XB Fan Control Demo Board (Figure 1-1) measures only 1.5” x 2.0”, allowing direct installation to the user’s end equipment for system evaluation. It uses through-hole components for easy assembly and evaluation.
  • Page 7: Reference Documents

    • AN768, “Redundant Fan Systems Using the TC642 Fan Manager”, DS00768, Microchip Technology Inc., 2002 • AN770, “Linear Voltage Fan Speed Control Using Microchip’s TC64X Family”, DS00770, Microchip Technology Inc., 2003 • AN771, “Suppressing Acoustic Noise in Pulse Width Modulation (PWM) Fan Speed Control Systems”, DS00771, Microchip Technology Inc., 2003...
  • Page 8 TC64X/TC64XB Fan Control Demo Board User’s Guide NOTES:  2003 Microchip Technology Inc. DS21401C-page 4...
  • Page 9: Chapter 2. Getting Started

    Using Bipolar Driver Transistors All component selections should be made based on the information provided in the Applications section of the TC64X and TC64XB data sheets. Table 2-1 lists typical fan module operating configurations for 12V fan applications. These are provided as a guide only.
  • Page 10: System Connection For +5V Operation

    Substituting a logic level MOSFET for Q (such as a BS170) results in lower system voltage losses and significantly reduces output loading on the TC64X and TC64XB devices. The low R of the MOSFET (1Ω in the case of the BS170) enables it to be DSON used instead of the Darlington configuration in high-current fan applications.
  • Page 11: Appendix A. Board Layout And Schematic

    This appendix contains general information concerning the layout, schematic and components for the TC64X/TC64XB Fan Control Demo Board. BOARD LAYOUT AND SCHEMATIC Figure A-1 depicts the layout for the TC64X/TC64XB Fan Control Demo Board. Figure A-2 shows the schematic for the TC64X/TC64XB Fan Control Module. SENSOR FAULT FAN (–)
  • Page 12 TC64X/TC64XB Fan Control Demo Board User’s Guide Optional FAULT 0.01 µF 2N3906 10 µF Test Point Sensor 1.2 kΩ 470Ω Input 0.01 µF FAULT FAULT TC64X TC64XB 0.1 µF SENSE 0.01 µF 0.47 µF - 1 µF (Optional) FIGURE A-2: TC64X/TC64XB Fan Control Demo Board Schematic ...
  • Page 13: Appendix B. Bill-Of-Materials (Bom)

    TC64X/TC64XB FAN CONTROL DEMO BOARD USER’S GUIDE Appendix B. Bill-of-Materials (BOM) DEMO BOARD COMPONENTS Table B-1 lists typical components and the associated values that comprise the TC64X/TC64XB Fan Control Demo Board. TABLE B-1: FAN CONTROL MODULE COMPONENTS LIST Component Typical Value Comments 10 µF Radial Electrolytic...
  • Page 14: Worldwide Sales And Service

    Fax: 905-673-6509 Tel: 91-80-2290061 Fax: 91-80-2290062 Winnersh Triangle Japan Wokingham Berkshire, England RG41 5TU Benex S-1 6F Tel: 44-118-921-5869 3-18-20, Shinyokohama Fax: 44-118-921-5820 Kohoku-Ku, Yokohama-shi Kanagawa, 222-0033, Japan Tel: 81-45-471- 6166 Fax: 81-45-471-6122 07/28/03  2003 Microchip Technology Inc. DS21401C-page 10...
  • Page 15 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Microchip TC642DEMO...

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