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iW339 PDF预览

iW339

更新时间: 2024-11-06 14:56:19
品牌 Logo 应用领域
瑞萨 - RENESAS /
页数 文件大小 规格书
5页 397K
描述
3-in-1 Secondary-Side Signal Interface Controller with Optimized Output Drive

iW339 数据手册

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iW339  
SSL Interface Controller for Analog (0-10V), PWM, and  
Resistor Dimming with Optocoupler Delay Elimination  
1 Description  
The iW339 is a PWM signal generator that works with three different types of dimming inputs, 0-10V PWM dimming,  
0-10V linear dimming or simple dimming using a single resistor to ground from the DIM pin. The iW339 converts  
either of these three signals into a 0%-100% PWM duty cycle that can then be used to provide a dimming signal to a  
primary-side LED driver such as the iW3636, removing the need for transformers or other driver circuitry. The output of  
the iW339-01 is optimized in such a way as to remove the impact of the non-linear delay typical of optocouplers. The  
output of the iW339-00 provides a standard PWM output.  
The output PWM frequency can be programmed from 100Hz to 50kHz through a single capacitor to ground. The input  
to the iW339 integrates the necessary current source to interface with both active and passive 0-10V dimmers without  
additional circuitry, while the output can drive an optocoupler to provide isolated dimming control from the secondary  
to the primary.  
2 Features  
0% to 100% PWM output  
15V to 60V operating voltage  
3-in-1 dimmer interface  
x
x
x
1% PWM duty cycle tolerance  
Selectable frequency range via external capacitor  
x
x
x
0-10V linear dimming  
0-10V PWM dimming  
Single resistor dimming  
Unique duty cycle drive to account for non-linear  
optocoupler delay  
Integrated current source for driving 0-10V dimmer  
Integrated optocoupler driver for isolated applications  
SOIC-8 package  
Low power shutdown mode  
3 Applications  
● 0-10V LED dimming application  
● 3-in-1 LED driver interface chip (0-10V linear,  
0-10V PWM and R dimming) dimming LED driver  
application  
VOUT  
3-in-1  
Dimming  
Control  
AC Input  
iW3636  
LED Controller  
0-10V PWM  
RTN  
or  
iW339  
Dimming  
10V  
0V  
VCC  
VIN  
0-10V Analog  
DRV  
DIM  
FLT  
SD  
CF  
or  
GND  
Resistive  
Figure 3.1 : iW339 Typical Application Circuit  
17-Aug-2022  
Product Summary  
Rev. 1.2  
www.renesas.com  
© 2022 Renesas Electronics  
1 of 5  

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