전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

SP4403 데이터시트(PDF) 6 Page - Sipex Corporation

부품명 SP4403
상세설명  Low Voltage Electroluminescent Lamp Driver
Download  14 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  SIPEX [Sipex Corporation]
홈페이지  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP4403 데이터시트(HTML) 6 Page - Sipex Corporation

Back Button SP4403 Datasheet HTML 2Page - Sipex Corporation SP4403 Datasheet HTML 3Page - Sipex Corporation SP4403 Datasheet HTML 4Page - Sipex Corporation SP4403 Datasheet HTML 5Page - Sipex Corporation SP4403 Datasheet HTML 6Page - Sipex Corporation SP4403 Datasheet HTML 7Page - Sipex Corporation SP4403 Datasheet HTML 8Page - Sipex Corporation SP4403 Datasheet HTML 9Page - Sipex Corporation SP4403 Datasheet HTML 10Page - Sipex Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 6 / 14 page
background image
SP4403DS/05
SP4403 Electroluminescent Lamp Driver
© Copyright 2000 Sipex Corporation
6
The Switched H-Bridge Network
The H-bridge consists of two SCR structures
that act as high voltage switches. These two
switches control the polarity of how the lamp is
charged. The SCR switches are controlled by
the f
LAMP signal which is the oscillator frequency
divided by 128. For a 50kHz oscillator, the 7 flip
flops will drive f
LAMP= 390Hz.
When the energy from the coil is released, a high
voltage spike is created triggering the SCR
switches. The direction of current flow is
determined by which SCR is enabled. One full
cycle of the H-bridge will create 128 voltage
steps from ground to 80V (typical) on EL1 and
EL2 (pins 4 and 5, respectively) which are 180
degrees out of phase from each other (see
Figure 5). A differential representation of the
output is shown in Figure 6.
Fine Tuning Performance
Circuit performance of the SP4403 can be
improved with some of the following
suggestions:
Increase EL Lamp Light Output: By
connecting a fast recovery diode from COIL
(pin 3) to C
INT (pin 7), the internal diode of the
switched H-bridge network is bypassed resulting
in an increase in light output at the EL lamp.
We suggest a fast recovery diode, such as the
industry standard 1N4148, be used for D1. This
circuit connection can be found in Figure 2.
Square Wave Output Waveform to the EL
Lamp: A 470pF capacitor at C
INT (pin13) will
act as an integrating capacitor, filtering out any
coil switching spikes or ripple in the output
waveform to the EL lamp (shown if Figure 1).
A designer may change the output waveform to
a square wave by using a 0.1
µFcapacitor(shown
in Figure 2) at C
INT (pin 13).
Printed Circuit Board Layout Suggestions:
The SP4403's high-frequency operation makes
PC layout important for minimizing ground
bounce and noise. Keep the IC's GND pin and
the ground leads of C1 and C
INT in Figure 2 less
than 0.2in (5mm) apart. Also keep the
connections to L1 (pin 3) as short as possible.
To maximize output power and efficiency and
minimize output ripple voltage, use a ground
plane and solder the IC's V
SS (pin 2) directly to
the ground plane.
EL Lamp Driver Design Challenges
There are many variables which can be optimized
for specific applications. The amount of light
emitted is a function of the voltage applied to the
lamp, the frequency at which it is applied, the
lamp material, the lamp size, and the inductor
used. Sipex supplies characterization charts to
aid the designer in selecting the optimum circuit
configuration (see Figures 7 to 14).
Sipex will perform customer application
evaluations, using the customer's actual EL
lamp to determine the optimum operating
conditions for specific applications. For
customers considering an EL backlighting
solution for the first time, Sipex is able to offer
retrofitted solutions to the customer's existing
LED or non-backlit product for a thorough
electrical and cosmetic evaluation. Please
contact your local Sales Representative for Sipex
or the Sipex factory directly to initiate this
valued service.


유사한 부품 번호 - SP4403

제조업체부품명데이터시트상세설명
logo
SamHop Microelectronics...
SP4400 SAMHOP-SP4400 Datasheet
132Kb / 11P
   Dual N-Channel Enhancement Mode Field Effect Transistor
SP4401 SAMHOP-SP4401 Datasheet
129Kb / 8P
   Super high dense cell design for low RDS(ON).
logo
Sipex Corporation
SP4405 SIPEX-SP4405 Datasheet
158Kb / 20P
   Low Voltage Electroluminescent Lamp Driver with Regulated Output Voltage
SP4405EN SIPEX-SP4405EN Datasheet
158Kb / 20P
   Low Voltage Electroluminescent Lamp Driver with Regulated Output Voltage
SP4405EU SIPEX-SP4405EU Datasheet
158Kb / 20P
   Low Voltage Electroluminescent Lamp Driver with Regulated Output Voltage
More results

유사한 설명 - SP4403

제조업체부품명데이터시트상세설명
logo
Sipex Corporation
SP4425 SIPEX-SP4425 Datasheet
176Kb / 14P
   Electroluminescent Lamp Driver Low Voltage Applications
SP4414 SIPEX-SP4414 Datasheet
137Kb / 14P
   Low Cost Electroluminescent Lamp Driver
SP4422A SIPEX-SP4422A Datasheet
136Kb / 13P
   Electroluminescent Lamp Driver
SP4405 SIPEX-SP4405 Datasheet
158Kb / 20P
   Low Voltage Electroluminescent Lamp Driver with Regulated Output Voltage
SP4412A SIPEX-SP4412A Datasheet
119Kb / 10P
   Electroluminescent Lamp Driver
logo
List of Unclassifed Man...
ZSP4422A ETC1-ZSP4422A Datasheet
145Kb / 8P
   Electroluminescent Lamp Driver
logo
Sipex Corporation
SP4423 SIPEX-SP4423 Datasheet
180Kb / 13P
   Electroluminescent Lamp Driver Low Power Applications
logo
List of Unclassifed Man...
D365A ETC1-D365A Datasheet
299Kb / 12P
   Electroluminescent Lamp Driver IC
D372A ETC1-D372A Datasheet
446Kb / 12P
   Electroluminescent Lamp Driver IC
D340B ETC1-D340B Datasheet
364Kb / 9P
   Electroluminescent Lamp Driver IC
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14


데이터시트 다운로드

Go To PDF Page


링크 URL




개인정보취급방침
ALLDATASHEET.CO.KR
ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크교환   |   제조사별 검색
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com