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LX23224IDB Evaluation Board
Reference Documents
 LX23224IDB - 4 Channel EDGE-Lit LED Display Driver with DC/DC PSU Controllers,
Cat. No. DS_LX23224
 AN 195 - Designing an EDGE-Lit LED BackLight System Based LX23224,
Cat. No. 06-0131-80
Copyright © 2011
Rev. 0.2, 10-04-2011
2381 Morse Avenue, Irvine, CA 92614, USA; Within the USA: (800) 713-4113, Outside the USA: (949) 221-7100 Fax: (949) 756-0308
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LX23224IDB
Evaluation Board
User Guide
Revision 0.2
Microsemi
Analog Mixed Signal Group
urce Control Drawing
1

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  • Page 1 Evaluation Board User Guide Revision 0.2 Reference Documents  LX23224IDB - 4 Channel EDGE-Lit LED Display Driver with DC/DC PSU Controllers, Cat. No. DS_LX23224  AN 195 - Designing an EDGE-Lit LED BackLight System Based LX23224, Cat. No. 06-0131-80 Microsemi Copyright ©...
  • Page 2: Table Of Contents

    LX23224IDB Evaluation Board Table of Contents About this Guide ................... 3 Audience ............................3 Organization ..........................3 Abbreviations ..........................3 Introduction ....................4 EVB Features ..........................4 System Architecture ........................5 Interfaces and Connections ......................5 Physical Description ..................6 Connectors ...........................6 Test Points ............................7 DIP Switch SW1 ...........................7 Installation ....................
  • Page 3: About This Guide

    LX23224IDB Evaluation Board 1 About this Guide This document provides a description and operation procedures for Microsemi's LX23224IDB Evaluation Board. 1.1 Audience This document is intended for qualified personnel, meaning operators and technicians who have a background in electronics and are familiar with its basic concepts.
  • Page 4: Introduction

    LX23224IDB Evaluation Board 2 Introduction Microsemi’s Evaluation Kit (see Figure 1) provides designers with a platform to evaluate the performance and implementation of LX23224IDB EDGE-Lit LED Display Driver. All necessary steps and connection instructions required to install and operate this board are provided within this document.
  • Page 5: System Architecture

    LX23224IDB Evaluation Board 2.2 System Architecture Figure 2 depicts block diagram of LX23224IDB Evaluation Board. LX23224IDB LED Driver controlls a DC/DC and four LED strings 24 Vin Connector LX23224IDB DC/DC #1 Block String #3/4 external String #1/2 external components components C.S.
  • Page 6: Physical Description

    3.1.1 L ED Strings Connectors J6, J7, J8, J9 1 7 B Table 2 lists the two dedicated LED connectors that connect to Microsemi LED demo panel (PR-1004-A01). Table 2: LED Strings Connectors Table – Pin Description Connector Pin No.
  • Page 7: Test Points

    LX23224IDB Evaluation Board 3.1.2 Power Connector J1 This connection supplies operating voltage for the whole LED backlight platform. Connector is connected to both high power supplies and LED driver. Table 3: Power Connector Table – Pin Description Pin No. Signal Name...
  • Page 8: Installation

    LX23224IDB Evaluation Board 4 Installation The following chapter describes the steps required for installing and operating the Evaluation Board. 4.1 Preliminary Steps and Safety Precautions  Connect all required peripherals prior to powering the board. (LED’s, digital dimming generator)  Do not perform a hot-swap! ...
  • Page 9: Hardware Setup

    LX23224IDB Evaluation Board 4.3 Hardware Setup 1. Set power supply to 24V output. (Don’t turn ON the power supply yet)  Verify its minimum current capability; power supply must provide 4A. 2. Connect the power cable to J1 connector (Figure 55).
  • Page 10: Troubleshooting

    LX23224IDB Evaluation Board 5 Troubleshooting Table 6 provides a troubleshooting guide. Scenarios defined in the table are simple and do not take into account human error or multiple failures. Corrective action is to be done in a sequential manner. Table 6: LED System Board Troubleshooting Guide...
  • Page 11 Microsemi and cannot be copied, published, uploaded, posted, transmitted, distributed or disclosed or used without the express duly signed written consent of Microsemi If the recipient of this document has entered into a disclosure agreement with Microsemi, then the terms of such Agreement will also apply .

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