MTD6505 3-Phase BLDC Sensorless Fan Controller Demonstration Board User’s Guide © 2011 Microchip Technology Inc.
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MTD6505 3-PHASE BLDC SENSORLESS FAN CONTROLLER DEMO BOARD USER’S GUIDE Table of Contents Preface ........................................................................................................................... 5 Introduction............................................................................................................ 5 Document Layout .................................................................................................. 5 Conventions Used in this Guide ..................
MTD6505 3-Phase BLDC Sensorless Fan Controller Demo Board User’s Guide DS52009A-page 4 © 2011 Microchip Technology Inc.
MTD6505 3-PHASE BLDC SENSORLESS FAN CONTROLLER DEMO BOARD USER’S GUIDE Preface 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.
MTD6505 3-Phase BLDC Sensorless Fan Controller Demo Board User’s Guide CONVENTIONS USED IN THIS GUIDE This manual uses the following documentation conventions: DOCUMENTATION CONVENTIONS Description Arial font: Italic characters Initial caps Quotes Underlined, italic text with right angle bracket Bold characters N‘Rnnnn Text in angle brackets < > Courier New font: Plain Courier New Represents Referenced books Emphasized text A window A dialog A menu selection A field name in a window or dialog A menu path
Preface RECOMMENDED READING This user's guide describes how to use MTD6505 3-Phase BLDC Sensorless Fan Controller Demonstration Board. Other useful documents are listed below. The following Microchip documents are available and recommended as supplemental reference resources. • MTD6505 Data Sheet, “3-Phase BLDC Sinusoidal Sensorless Fan Motor Drive” (DS22281) THE MICROCHIP WEB SITE Microchip provides online support via our web site at www.microchip.com.
MTD6505 3-Phase BLDC Sensorless Fan Controller Demo Board User’s Guide NOTES: DS52009A-page 8 © 2011 Microchip Technology Inc.
MTD6505 3-PHASE BLDC SENSORLESS FAN CONTROLLER DEMO BOARD USER’S GUIDE Chapter 1. Product Overview 1.1 INTRODUCTION The MTD6505 3-Phase BLDC Sensorless Fan Controller Demonstration Board allows the control and monitoring of the MTD6505 device, using a PC software connected to the MTD6505 3-Phase BLDC Sensorless Fan Controller Demonstration Board via a USB connection.
MTD6505 3-Phase BLDC Sensorless Fan Controller Demo Board User’s Guide 1.2 MTD6505 3-PHASE BLDC SENSORLESS FAN CONTROLLER DEMONSTRATION BOARD HARDWARE DESCRIPTION The MTD6505 3-Phase BLDC Sensorless Fan Controller Demonstration Board contains several components, such as: • A microcontroller (PIC24FJ256GB) for USB connection, PWM generation, FG frequency measurement, VDD measurement, other’s signal’s activations and component’s communication.
MTD6505 3-PHASE BLDC SENSORLESS FAN CONTROLLER DEMO BOARD USER’S GUIDE Chapter 2. Installation and Operation 2.1 GETTING STARTED The following sections describe how to use the MTD6505 3-Phase BLDC Sensorless Fan Controller Demonstration Board. 2.1.1 Software Installation Download the MTD6505 3-Phase BLDC Sensorless Fan Controller Demonstration Board software installer from the Microchip web site at http://www.microchip.com. From the web site, search for the evaluation board by part number ADM00345.
MTD6505 3-Phase BLDC Sensorless Fan Controller Demo Board User’s Guide To use the MTD6505 3-Phase BLDC Sensorless Fan Controller Demonstration Board, follow the next steps: 1. Plug in the MTD6505 plug-in module (with an MTD6505 soldered on it) on its socket (see Figure 2-1). 2. To plug in a 3-Phase BLDC sensorless fan, choose one of these connections: - 3-Phase fan connector from the MTD6505 3-Phase BLDC Sensorless Fan Controller Demonstration Board (J5) - On the MTD6505 plug-in module fan connector. 3.
Installation and Operation 2.2 MTD6505 3-PHASE BLDC SENSORLESS FAN CONTROLLER DEMONSTRATION BOARD SOFTWARE DESCRIPTION The MTD6505 3-Phase BLDC Sensorless Fan Controller Demonstration Board Software window contains two tabs. The first tab is for controlling and monitoring the MTD6505 3-Phase BLDC Sensorless Fan Controller Demonstration Board; the second tab is the Measurement tab. 2.2.1 Controlling and Monitoring Tab Figure 2-2 shows the options and functions available to control and monitor the board.
MTD6505 3-Phase BLDC Sensorless Fan Controller Demo Board User’s Guide 2.2.1.1 CONTROL/MONITORING The Control/Monitoring Group box contains two buttons: • Turn On/Off VDD button enables/disables the power supply on the VDD pin of the MTD6505 device. • Change Direction is used to inverse the sense of the fan rotation. The Change Direction button is available only when VDD is turned off. 2.2.1.2 RPROG PIN The RPROG Pin Group box allows the selection of the desired RPROG resistor value.
Installation and Operation 2.2.2 Measurement Tab The Measurement tab is used to check if the fan is correctly adapted to the MTD6505 by testing the fan several times in different conditions. This tab contains two more tabs, for settings and results. 2.2.2.1 SETTINGS TAB Figure 2-3 shows the Setting tab.
MTD6505 3-Phase BLDC Sensorless Fan Controller Demo Board User’s Guide 2.2.2.1.1 Measurement Settings The Measurement Settings Group box is used to specify the measurement corners required: • Number of iterations – for one corner • PWM Corners Measurement – requires the PWM Max (%), PWM Step (%) and PWM Min (%) values setting. The software will start with the maximum value entered, and will decrease the PWM by the step value until reaches the minimum entered PWM value.
Installation and Operation 2.2.2.2 MEASUREMENT RESULTS TAB Figure 2-4 shows the Measurement Results sub-tab: 1 2 Legend: FIGURE 2-4: 1 = Measurement Results table 2 = Measurement Control Group box GUI - Measurement – Results Tab. The results are stored in this table. All the tests have the first six columns in common, with the other columns being significant only for a specific test. Settings’ control buttons are also visible in this tab (see description in Section 2.2.2.1.
MTD6505 3-Phase BLDC Sensorless Fan Controller Demo Board User’s Guide 2.3 HOW TO DEFINE THE CORRECT RPROG VALUE This section explains how to define the correct KM value for a specific fan. The KM is linked to the RPROG (see Table 2-1). An incorrect KM selection can create issues, or reduce the efficiency. 2.3.1 Operation Follow the next steps to define the right RPROG value: 1. Apply a constant stream of air to a fan that is not connected. 2.
MTD6505 3-PHASE BLDC SENSORLESS FAN CONTROLLER DEMO BOARD USER’S GUIDE Appendix A. Schematics and Layouts A.
MTD6505 3-Phase BLDC Sensorless Fan Controller Demo Board User’s Guide BOARD – SCHEMATIC: POWER MANAGEMENT PART AND RESISTOR FOR PROGRAMMING PART 3 1 2 POWER PART R_ADJ (Max R on code 0, low output) R_PROG 0, 3.9K, 24K R PROG PART 1 2 3 100K R20 A.2 DS52009A-page 20 © 2011 Microchip Technology Inc.
Schematics and Layouts A.3 BOARD – SCHEMATIC: DIRECTION PIN MANAGEMENT PART, PIC RESERVES PART, AND MTD6505 VOLTAGE AND CURRENT MONITORING PART IC DIR PIN MANAGMENT PART 2 1 3 1 2 2 1 1 3 2 PIC RESERVE PART 2 1 3 IC VOLTAGE AND CURRENT MONITORING PART 0.05R shunt 1% © 2011 Microchip Technology Inc.
MTD6505 3-Phase BLDC Sensorless Fan Controller Demo Board User’s Guide PIC24F Part 1 BOARD – SCHEMATIC: PIC24FJ256GB106 PART 2 A.4 DS52009A-page 22 © 2011 Microchip Technology Inc.
Schematics and Layouts A.5 BOARD – SCHEMATIC: IC PART/MTD6505 PLUG-IN MODULE SOCKET PART, USB CONNECTION PART, LED PART, AND RESET SWITCH PART IC PART LED PART © 2011 Microchip Technology Inc.
MTD6505 3-Phase BLDC Sensorless Fan Controller Demo Board User’s Guide A.6 BOARD – TOP SILK AND PADS DS52009A-page 24 © 2011 Microchip Technology Inc.
Schematics and Layouts A.7 BOARD – TOP TRACE AND PADS © 2011 Microchip Technology Inc.
MTD6505 3-Phase BLDC Sensorless Fan Controller Demo Board User’s Guide A.8 BOARD – BOTTOM TRACE AND PADS DS52009A-page 26 © 2011 Microchip Technology Inc.
MTD6505 3-PHASE BLDC SENSORLESS FAN CONTROLLER DEMO BOARD USER’S GUIDE Appendix B. Bill of Materials TABLE B-1: Qty BILL OF MATERIALS (BOM) Reference Description Part Number 2 C1, C2 8 C3, C6, C7, CAP CER .1UF 16V 10% X7R 0603 C8, C9, C10, C11, C21 Murata Electronics® GRM188R71C104KA01D 3 C4, C16, C22 CAP CERAMIC 10.0UF 16V X5R 1206 KEMET® Electronics Corp. C1206C106K4PACTU 2 C5, C23 CAP CER 10UF 6.3V X5R 0603 KEMET Electronics Corp. C0603C106M9PACTU 4 C12, C13, C18, C20 CAP CERAMIC 4.
MTD6505 3-Phase BLDC Sensorless Fan Controller Demostration Board TABLE B-1: Qty BILL OF MATERIALS (BOM) (CONTINUED) Reference Description Manufacturer Part Number 2 R8, R18 RES 10K OHM 1/10W 5% 0603 SMD Panasonic - ECG ERJ-3GEYJ103V 1 R9 RES 4.
NOTES: © 2011 Microchip Technology Inc.
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