MTK 平台讨论

Argo_Cheng

大家好！
我现在讨论用MTK 6226滑盖的平台，RF对LED Driver IC干扰信号大的问题汇整，请大家发表你的意见！
现在用的是Charger Pump，Driver 3 LED'S, 拨号时会有背光闪屏现象。单独将Charger Pump EN pin 拉Hi，就ok，这个问题就是MTK的时序问题，大家有没有遇到过？如有，能否提供解决方案？
谢谢！

md_zhao

<P>是不是线路板，没有设计好啊，要先看看是不是线路板设计问题，然后再找平台问题啊</P>

mispcm

<P>   You can check the voltage between the LED electrode when calling. Normally, the voltage is interfered by the output-power of PA. So you may try to add capacitance of 27pF-39pF to the positve or negative of LED to fliter the interference.</P><P>    We had met the same question before, but we used the serial driver not parallel. At last, we added a 39pF capacitance to the FB point of driver  and the result was very good.  So maybe this solution is good, you can try.</P>[br]<p align=right><font color=red>+5 RD币</font></p>