Related Manuals for NEC uPD168804
Summary of Contents for NEC uPD168804
- Page 1 User’s Manual EZ-0007 uPD168804 Buck converter HBLED Evaluation board RK-UD-09-0062 Data Published March 2009 © NEC Electronics Corporation 1/16...
- Page 2 EZ-0007 Packaging List Item Number □ 1. This board (ET-D168804Buck-0001) □ 2. User’s Manual (English) □ 3. User’s Manual (Japanese) □ 4. Table of Toxic and Hazardous Substance and Elements □ 5. Spacer 2/16 RK-UD-09-0062...
- Page 3 NEC Electronics does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from the use of NEC Electronics products listed in this document or any other liability arising from the use of such products. No license, express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of NEC Electronics or others.
- Page 4 Safety Precautions This document explains matters to be noted for safe use of this evaluation board. Be sure to read this document before using this evaluation board. • Be sure to observe all dangers, warnings, cautions, and other instructions contained herein when using this evaluation board.
- Page 5 Warnings Warning Be careful to burns. The part of board around LED becomes high temperature. Be careful to brightness of LEDs and On/Off period of LEDs. Stimulating of strong light may cause symptoms such as epilepsy by constitution. Do not heat the board or expose it to fire, and do not short the terminals. Doing so may cause product failure, generation of heat, fire, or rupture.
- Page 6 Environments where static electricity or electrical noise is readily generated. Such influences can lead to electric shock or product failure. In case liquid enters the board, cut the power supply, and consult your dealer or NEC Electronics sales representative. Even if the unit appears to be dry, internal moisture may remain.
- Page 7 Table of contents Chapter 1 Overview ………………………………………………………… 8 Chapter 2 Specification ………………………………………………………… 9 Chapter 3 How to use ………………………………………………………… 13 Appendix A Revision History………………………………………………………… 15 7/16 RK-UD-09-0062...
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Page 8: Chapter 1 Overview
Chapter 1 Overview This board is for evaluation of uPD168804 :4ch LED driver IC. This board is using buck converter topology. (uPD168804 support both buck and boost topology.) Since this board has regulator which generate DC5V from DC12V for driver IC operation, it is possible to drive by single power supply from AC adapter (12V is recommended with operating range from 9V to 16V). -
Page 9: Chapter 2 Specification
Chapter 2 Specification 2.1 Appearance of the board DIP switch Connector for MCU control mode DC5V supply for MCU board Board name DC plug for AC adapter Surface appearance (TOP View) Warning Be careful to burns. The part of board especially the area enclosed with dot line becomes high temperature. - Page 10 LED CH1 LED CH2 Board name LED CH0 LED CH3 Surface appearance (Bottom View) Warning Be careful to burns. The part of board especially the area enclosed with dot line becomes high temperature. Do not look LEDs on this board directly. Doing so may cause weakening eyesight.
- Page 11 : match to the plug shown in figure 2 Warning Use AC adapter adapted to safety standard of each county. Using non-adopt AC adapter cause product failure, generation of heat, fire or electric shock. As for circuit diagram, please see NEC Electronics Web site. URL: http://www.necel.com/micro/en/solution/lighting/index.html 11/16 RK-UD-09-0062...
- Page 12 2.4 DIP Switch setting and Connecter pin assign Table1. DIP Switch setting Name Function ENABLE Mode setting [Stand alone mode] Turn to “ON” after power is supplied Turn to “OFF” before power supply becomes off [MCU control mode] Keep this switch to “OFF” N.C.
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Page 13: Chapter 3 How To Use
Chapter 3 How to use Caution Confirm all DIP switch is “OFF” before connecting power supply and cables. In case DIP switch is “ON”, LED will turn on when power is supplied, and it may cause product failure when MCU board is connected. 3.1 Stand alone mode 3.1.1 When start evaluation 1) Turn ENABLE bit and CH0~CH3 bit of DIP switch to “OFF”... - Page 14 3.2 MCU control mode Example when using “78K0/IA2 PWM evaluation board (EZ-0006)” 3.2.1 When start evaluation 1) Connect this board and MCU board by connector cable, and connect power supply of MCU board to DC5V pin of this boar. 2) Plug AC adapter or turn on DC power supply 3) Connect DC power to DC plug of this board In case of using DALI or DMX communication, connect all cables before power is supplied.
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Page 15: Appendix A Revision History
Appendix A Revision History Revision Modified Points Page Rev.1.0 15/16 RK-UD-09-0062... - Page 16 NEC Electronics Corporation 1753, Shimonumabe, Nakahara-ku, Kawasaki, Kanagawa 211-8668, Japan Tel: +81-44-435-5111 http://www.necel.com/ [Technical Support] Power Management Device Division, NEC Electronics Tel : +81-44-435-1592 Multipurpose Microcomputer System Division, NEC Electronics Tel: +81-44-435-9452 Data Published March 2009 16/16 RK-UD-09-0062...