如何降低待机能耗ON Semiconductor

简介：

问：你理解非常正確。DVD+AMP+RADIO, output power require 260w, and 對EMC有要求，有這樣的ic,電路簡單，可靠性高，板面小。請將相關file發到lxm@amchk.com   或ssh.lu@amchk.com,thks. 
答： OK, I"ll contact you later.

问：1：采用变压器次级绕组提供60V高压降低至5V时，待机功耗约多少？使用安森美1200P40，变压器次级绕组电压能否升高至80V？
2：使用安森美1200P40能否配用4N60系列MOS管？
答： Yes, NCP1200 at least has two method to power it, one is by DSS, and another method is to use auxiliary winding, it could drive 4N60 no problem, and it safe under power by axiliary winding.

问：安森美的这些节能芯片有没有其他公司对应芯片？
答： I am afraid not.

问：我們DVD電源有11組輸出，變壓器如何設計最佳，才能保証輸出的電壓在空栽和滿栽時變動小？如何提高效率，降低噪聲？
答： There is no simple answer.  Please contact me by sending your contact info. to me.  manson.chan@onsemi.com

问：在计算机,特别是笔记本电脑中的解决方案是否成熟？
特别是在原有的节能模块比较成熟的情况下，有何优势？
答： Our solutions are very popular and a lot of customers use our NCP1200,03,05 in adaptors (notebook, LCD monitor, game machine...).

Our solutions achieve high efficiency, at the same time have very low standby power.  The technology is ver

问：请问：安森美开发了一系列用于开关电源的节电王IC产品具体在中国普及的时间是多长。
答： The IC"s are becoming popular now.  A lot of big companies, e.g. TCL, is using our parts.

问：NCP系列好像对变压器特殊要求？如何设计辅助绕组？
答： All of the switch mode power supply is same on the axiliary winding design, but NCP series is more easilier than before, that mostly comes from it DSS self power function, while the load is very light, or the transient from heavy to light, the duty decreas

问：光电耦合器的参数选择是什么样的？要求的参数范围是怎么样的？
答： Most important parameter of a opto-coupler is the CTR (Current Transfer Ratio).  As a rule of thumb, select CTR in the range of 60% to 300%.

问：可否提供贵司应用于开关电源的器件的应用电路
答： Yes, there are a number of application circuits available in our datasheet and website.  If you want more specific application diagrams, please contact our sales offices or distributors.

问：采用准谐振，对电源的参数有何影响比如波纹系数等？
答： No.  Except that start up capability for quasi-resonant is not as good as fixed frequency mode.  In addition, during short circuit, power under controlled will be different at high line and low line condition.