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Número de pieza | DT8211 | |
Descripción | Application | |
Fabricantes | DMB | |
Logotipo | ||
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Preliminary
4 Lamps Inverter Application Datasheet using DT8211
DT8211 Application (19”wide & 20.1”wide Panel)
4 Lamps Inverter Application Datasheet using DT8211
Rev1.0 - 18 April 2008
Application Datasheet
1. General description
This application is an example circuit of 4 lamps inverter using DT8211. The design
contains protection functions such as OLP, OVP, SCP and basic functions such as
ADIM (Analog Dimming) and BDIM (Burst Dimming). This design is intended to show
how to use DT8211, implement basic functions and protection functions, and design
a circuit. This document contains features, schematic, and bill of materials.
2. Features
n Fixed Frequency Half Bridge Topology
n Designed for 4 Lamp Inverter Solution
n Positive Polarity Analog Dimming (Negative Polarity Possible)
n Positive Polarity Internal Burst Dimming (Negative Polarity Possible)
n ADIM & BDIM Polarity Selectable
n Simultaneous Operation of ADIM and BDIM
n Open Lamp Protection
n Open Lamp Voltage Regulation (Over Voltage Protection)
n Short Circuit Protection (HOT-GND, COLD-GND)
3. Applications
www.DataSheet4U.com
n 4 Lamp CCFL Backlight Inverter Module
n Monitor
n TV
n Advertisement Board
Application Circuit
Rev1.0 – 18 April 2008
© 2008 DMB Tech. All Rights Reserved
1 of 11
1 page DMB Technology
DT8211 Application
4 Lamps Inverter Application Datasheet using DT8211
9. Test data
ADIM & BDIM Max Output Current Waveform
VIN = 12V, VBDIM = 4.5V, VADIM = 3.3V, unless otherwise specified.
J2 Output Current = 7.82mArms
J3 Output Current = 7.78mArms
www.DataSheet4U.com
J4 Output Current = 7.69mArms
J5 Output Current = 7.60mArms
Application Circuit
Rev1.0 – 18 April 2008
© 2008 DMB Tech. All Rights Reserved
5 of 11
5 Page DMB Technology
DT8211 Application
4 Lamps Inverter Application Datasheet using DT8211
9. Test data
Components Temperature
TA = 25°C, VIN = 12V, unless otherwise specified.
Condition
BDIM=4.5V,
ADIM=3.3V
Reference Number
U1
Q1, Q2
T1
C5
Components
DT8211
MOSFET(STM8319)
Transformer
Electronics Capacitor
Temperature
45.4℃
60.1℃, 65.8℃
54℃
45.7℃
10. Important notices
n This document can be added or changed without notice. Before considering use
or application, you’d better consult the D.M.B Technology Co., Ltd.
n No part of this publication may be reproduced or transmitted or copied in any
form or by any means without permission of D.M.B Technology.
n Although our design has internal protective circuit, you’d better adopt safety
circuits or measures externally to prevent undesired probabilistic device failure.
11. Contact information
For technical information
For sales information
For additional information
http://www.dmbtech.com
www.DataSheet4U.com
Application Circuit
Rev1.0 – 18 April 2008
© 2008 DMB Tech. All Rights Reserved
11 of 11
11 Page |
Páginas | Total 11 Páginas | |
PDF Descargar | [ Datasheet DT8211.PDF ] |
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