參數(shù)資料
型號(hào)： SSL2102
廠商： NXP Semiconductors N.V.
中文描述： Demoboard description SSL2102 12W-230V Triac dimmable fly-back demonstration board The SSL2102 is a Switched Mode Power Supply (SMPS) controller IC that operates in combination with a phase cut dimmer directly from rectified mains. It is designed to drive LED devices. Our SSL2102 demonstration boards are suitable for 120 V or 230 V mains.
文件頁數(shù)： 18/29頁
文件大?。?/td> 797K
代理商： SSL2102
AN10876
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Application note
Rev. 2 — 23 June 2011
18 of 29
NXP Semiconductors
AN10876
Buck converter for SSL applications
4.8 Demagnetization detection dimensioning
Several NXP ICs have demagnetization detection functionality that uses a pin with
minimum and maximum threshold voltages. The NXP range of LED drivers have levels
that are set to
100 mV and +100 mV. There is also a negative and positive clamping
diode with a threshold of 0.5 V. The clamping diodes have a maximum current level
I
demag(max)
. When using an auxiliary winding, the current should be limited to a level where
the threshold voltages are reached and the maximum current not exceeded.
Example: If V
aux
= 14 V and 100
A < I
aux
< 5 mA, then R
aux
(R10) = 14 / 100
10
-6
= 140 K
.
Note that the demagnetization detection is phase dependent and the winding direction
should be opposite to the main inductor in order to start next cycle at low valley. Reversing
the winding will result in switching at top detection.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SSL2102DB/17W120V,598 功能描述:LED 照明開發(fā)工具 17W 120V dimmable LED Drvr RoHS:否 制造商:Fairchild Semiconductor 產(chǎn)品:Evaluation Kits 用于:FL7732 核心: 電源電壓:120V 系列: 封裝:
SSL2102T/DB/FLYB120V,598 功能描述:LED 照明開發(fā)工具 SSL Mains Dimmable LED Driver Demo RoHS:否 制造商:Fairchild Semiconductor 產(chǎn)品:Evaluation Kits 用于:FL7732 核心: 電源電壓:120V 系列: 封裝:
SSL2102T/DB/FLYB120V598 制造商:NXP Semiconductors 功能描述:IC LED DRVR SOP-20
SSL2102T/DB/FLYB230V,598 功能描述:LED 照明開發(fā)工具 SSL Mains Dimmable LED Driver Demo RoHS:否 制造商:Fairchild Semiconductor 產(chǎn)品:Evaluation Kits 用于:FL7732 核心: 電源電壓:120V 系列: 封裝:
SSL2102T/DB/FLYB230V598 制造商:NXP Semiconductors 功能描述:IC LED DRVR SOP-20
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