NEC uPD168804 User manual

User’s Manual
EZ-0007
uPD168804 Buck converter HBLED Evaluation board
RK-UD-09-0062
Data Published March 2009
© NEC Electronics Corporation
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EZ-0007
Packaging List
Item Number
□1. This board (ET-D168804Buck-0001) 1
□2. User’s Manual (English) 1
□3. User’s Manual (Japanese) 1
□4. Table of Toxic and Hazardous Substance and Elements 1
□5. Spacer 4
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zThe information in this document is current as of March, 2009. The information is subject to change
without notice. For actual design-in, refer to the latest publications of NEC Electronics data sheets or
data books, etc., for the most up-to-date specifications of NEC Electronics products. Not all products
and/or types are available in every country. Please check with an NEC Electronics sales
representative for availability and additional information.
zNo part of this document may be copied or reproduced in any form or by any means without the prior
written consent of NEC Electronics. NEC Electronics assumes no responsibility for any errors that may
appear in this document.
zNEC 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.
zDescriptions of circuits, software and other related information in this document are provided for
illustrative purposes in semiconductor product operation and application examples. The incorporation
of these circuits, software and information in the design of a customer's equipment shall be done
under the full responsibility of the customer. NEC Electronics assumes no responsibility for any losses
incurred by customers or third parties arising from the use of these circuits, software and information.
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arising from defects in NEC Electronics products, customers must incorporate sufficient safety
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anti-disaster systems, anti-crime systems, safety equipment and medical equipment (not
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zThe quality grade of NEC Electronics products is "Standard" unless otherwise expressly specified in
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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.
•This document should be kept handy at all times for ready reference.
Symbols used
This document used the following symbols for matters to be observed for the safe use of the
unit.
The symbols are followed by a brief explanation of the possible extent of problems which may
occur if the notices are not observed.
The user may suffer death or serious injury and it’s
risk is high if the warning is not observed.
The user may suffer death or serious injury if the
warning is not observed.
Human injury or property damage may occur if the
caution is not observed.
Danger
Warning
Caution
The following symbols express matters which are prohibited in order to prevent injury or accident.
General prohibition
The action mentioned
is prohibited.
Do not touch
Touching the
specified location
may cause injury.
Do not disassemble
Disassembly may
cause a problem such
as electrical shock or
product failure.
Keep away from
water
Use near water poses
the risk of electrical
shock or product
failure if moisture were
to contact the unit.
Flammable
A nearby flame may
cause the unit to
catch fire.
Do not touch with
wet hands
Touching with wet
hands may cause
electric shock or
product failure.
The following symbols are used for cautions to prevent product failure and accidents.
General caution
Unspecified general cautions.
Caution Hot
Human injury by high temperature may
occur.
The following symbols are used for instructions to prevent product failure and accidents.
Compulsory action based on
an instruction for the user. Instruction to unplug
from AC power supply.
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Warnings
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.
Do not disassemble or modify the board.
Doing so may cause product failure, emission of smoke, fire, or electric shock.
Do not touch with wet hands.
Doing so cause product failure or electrical shock.
Do not look LEDs on this board directly.
Doing so may cause weakening eyesight.
Do not drop or jolt the board.
Doing so may break or damage the board, causing fire or electric shock.
Do not turn on power switch in insufficient state of cable connection such as AC
adapter, interface cable.
Doing so may cause product failure, generation of heat, fire or electric shock.
Do not plug in or unplug a connector or cable with power applied to the board.
Doing so may cause product failure, generation of heat, fire or rupture.
Do not carry this board with connecting AC adapter and any cable.
Doing so may cause damage of cable and cause product failure, generation of heat,
fire or electric shock.
Do not use this board in the purpose except the evaluation of Driver IC.
This board does not take safety measures or anti-EMI measures required for lighting
equipment.
Use this board with spacer and on the isolated bench.
In case conductor contact to the board, it may cause product failure, generation of
heat, fire or electric shock.
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.
Use specified power supply.
Using power supply except specified cause product failure, generation of heat, fire or
electric shock.
Use AC adapter with following size and polarity of DC plug.
Using another type of AC adapter may
cause product failure, generation of heat,
fire or electric shock.
If smoke or an abnormal smell or sound is emitted, or heating occurs, promptly
switch off the board power and unplug from AC power supply.
Using the board in such a state poses a risk of fire, burning, or electric shock.
Warning
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Cautions
Do not use or store this board in any of the following locations.
- Environments with copious water, humidity, steam, dust, fumes, etc.
- 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.
Do not touch LEDs on this board directly.
Doing so may cause product failure.
To prevent static electricity damage, guard against energizing when touching
metal parts such as the connector.
Static electricity can cause product failure.
Caution
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Table of contents
Chapter 1 Overview ………………………………………………………… 8
Chapter 2 Specification ………………………………………………………… 9
Chapter 3 How to use ………………………………………………………… 13
Appendix A Revision History………………………………………………………… 15
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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).
By connecting MCU board to this board, it is also possible to evaluate PWM dimming control by
MCU.
ET-D168804Buck-0001
78K0/IA2 PWM Evaluation board
(EZ-0006)
Host PC
Figure1 Evaluation environment example
1.1 Features of this board
The features of this board is as follows.
- 4ch LED driver IC : uPD168804GA
- Buck converter topology. Possible to use only single DC12V power supply
- Four LEDs are mounted (Lumileds K2; R,G,B,W)
- MCU interface connector enable for easy dimming evaluation by PWM
1.2 Support Modes
This board has two modes; stand alone mode and MCU control mode
- Stand alone mode
By setting DIP switch, it is possible to evaluate LED constant current drive.
- MCU control mode
By connecting MCU board such as “78K0/IA2 PWM Evaluation board (EZ-0006)”, it is possible
to evaluate PWM dimming control by MCU.
1.3 Related product information
As for the information of related products for this board, please see NEC Electronics Web site.
URL: http://www.necel.com/micro/en/solution/lighting/index.html
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Chapter 2 Specification
2.1 Appearance of the board
Surface appearance (TOP View)
Connector for MCU control mode
DC plug
for AC adapter
Board name DC5V suppl
y
for MCU board
DIP switch
Be careful to burns.
The part of board especially the area enclosed with dot line becomes high
temperature.
Warning
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LED CH0
LED CH2
LED CH3
Board name
LED CH1
Surface appearance (Bottom View)
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.
Use this board so that LED mounting surface becomes the lower (the back).
Warning
Do not touch LEDs on this board directly.
Doing so may cause product failure.
Caution
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2.2 Board Specification
Board name : ET-D168804Buck -0001
Input voltage : 9V to 16V
Driver IC : uPD168804GA-8EU-A
Drive topology : Buck
LEDs : Lumileds
CH0:LXK2-PW14-V00(White)
CH1:LXK2-PD12-S00(Red)
CH2:LXK2-PM13-U00(Green)
CH3:LXK2-PR14-R00(Blue)
LED current : 350mA(typ) per channel
DC plug : Switchcraft RAPC722
(Centerpinφ1.93mm, Plug φ6.3mm (max))
Figure2 Polarity and shape of DC plug
2.3 Power supply
Please prepare following AC adapter or DC power supply.
- AC adapter
Output voltage : DC12V (recommend), maximum range; 9V to 16V
Output current : more than 2A
Connecter : match to the plug shown in figure 2
Type : Switching regulator type with over current protect circuit
Do not use AC adapter whose output voltage is guaranteed only when
rated load current flows.
- DC power supply
Output voltage : DC12V (recommend), maximum range; 9V to 16V
Output current : more than 2A
Connecter : match to the plug shown in figure 2
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.
Warning
As for circuit diagram, please see NEC Electronics Web site.
URL: http://www.necel.com/micro/en/solution/lighting/index.html
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2.4 DIP Switch setting and Connecter pin assign
Table1. DIP Switch setting
Bit Name Function
1 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”
2 N.C. Not used
3 CH0
4 CH1
5 CH2
6 CH3
ON/OFF switch for each LED channel
[Stand alone mode]
Turn to “ON” after ENABLE it turn to “ON”
[MCU control mode]
Keep these switches to “OFF”
Table2. Connector pin assign
Pin Name Function MCU pins
Note1
1 EN ENABLE signal input ANI5/P25/CMP1+
2 CH0Note2 PWM input for CH0 dimming P31/TOX00/INTP2/TOOLC
3 CH1Note2 PWM input for CH1 dimming P32/TOX01/INTP3/TOOLD
4 CH2Note2 PWM input for CH2 dimming P33/TOX10
5 CH3Note2 PWM input for CH3 dimming P34/TOX11
6 SH Thermal Shutdown detect
signal output P00/TI000/INTP0
7 GND GND VSS
Note1. MCU pins when “78K0/IA2 PWM evaluation board (EZ-0006)” is used.
Note2. Channel number might be changed by software of MCU.
Note3. Connect the power supply for MCU board to “DC5V supply pin for MCU board”.
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Chapter 3 How to use
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.
Caution
3.1 Stand alone mode
3.1.1 When start evaluation
1) Turn ENABLE bit and CH0~CH3 bit of DIP switch to “OFF”
2) Plug AC adapter or turn on DC power supply
3) Connect DC power to DC plug of this board
4) Turn ENABLE bit of DIP switch to “ON”
5) Turn CHn bit of DIP switch to “ON”
3.1.2 When stop evaluation
1) Turn CH0~CH3 bit of DIP switch to “OFF”
2) Turn ENABLE bit of DIP switch to “OFF”
3) Unplug DC power from DC plug of this board
4) Unplug AC adapter or turn off DC power supply
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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.
4) Connect MCU board to PC by USB cable
5) Program software to MCU
6) Evaluation by running MCU
3.1.2 When stop evaluation
1) Stop MCU operation
2) Unplug DC power from DC plug of this board
3) Unplug AC adapter or turn off DC power supply
4) remove all cables
In case of using “78K0/IA2 PWM evaluatin board” and power of MCU
board is supplied from this board, do not supply power for DC plug of
MCU board.
It may cause product failure.
Caution
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Appendix A Revision History
Revision Modified Points Page
Rev.1.0
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For further information,
please contact:
NEC Electronics Corporation
1753, Shimonumabe, Nakahara-ku,
Kawasaki, Kanagawa 211-8668,
Japan
Tel: [phone]
http://www.necel.com/
[Technical Support]
Power Management Device Division, NEC Electronics Tel : [phone]
Multipurpose Microcomputer System Division, NEC Electronics Tel: [phone]
Data Published March 2009
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